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Theorem fedgmullem1 31025
Description: Lemma for fedgmul 31027 (Contributed by Thierry Arnoux, 20-Jul-2023.)
Hypotheses
Ref Expression
fedgmul.a 𝐴 = ((subringAlg ‘𝐸)‘𝑉)
fedgmul.b 𝐵 = ((subringAlg ‘𝐸)‘𝑈)
fedgmul.c 𝐶 = ((subringAlg ‘𝐹)‘𝑉)
fedgmul.f 𝐹 = (𝐸s 𝑈)
fedgmul.k 𝐾 = (𝐸s 𝑉)
fedgmul.1 (𝜑𝐸 ∈ DivRing)
fedgmul.2 (𝜑𝐹 ∈ DivRing)
fedgmul.3 (𝜑𝐾 ∈ DivRing)
fedgmul.4 (𝜑𝑈 ∈ (SubRing‘𝐸))
fedgmul.5 (𝜑𝑉 ∈ (SubRing‘𝐹))
fedgmullem.d 𝐷 = (𝑗𝑌, 𝑖𝑋 ↦ (𝑖(.r𝐸)𝑗))
fedgmullem.h 𝐻 = (𝑗𝑌, 𝑖𝑋 ↦ ((𝐺𝑗)‘𝑖))
fedgmullem.x (𝜑𝑋 ∈ (LBasis‘𝐶))
fedgmullem.y (𝜑𝑌 ∈ (LBasis‘𝐵))
fedgmullem1.a (𝜑𝑍 ∈ (Base‘𝐴))
fedgmullem1.l (𝜑𝐿:𝑌⟶(Base‘(Scalar‘𝐵)))
fedgmullem1.1 (𝜑𝐿 finSupp (0g‘(Scalar‘𝐵)))
fedgmullem1.z (𝜑𝑍 = (𝐵 Σg (𝑗𝑌 ↦ ((𝐿𝑗)( ·𝑠𝐵)𝑗))))
fedgmullem1.g (𝜑𝐺:𝑌⟶((Base‘(Scalar‘𝐶)) ↑m 𝑋))
fedgmullem1.2 ((𝜑𝑗𝑌) → (𝐺𝑗) finSupp (0g‘(Scalar‘𝐶)))
fedgmullem1.3 ((𝜑𝑗𝑌) → (𝐿𝑗) = (𝐶 Σg (𝑖𝑋 ↦ (((𝐺𝑗)‘𝑖)( ·𝑠𝐶)𝑖))))
Assertion
Ref Expression
fedgmullem1 (𝜑 → (𝐻 finSupp (0g‘(Scalar‘𝐴)) ∧ 𝑍 = (𝐴 Σg (𝐻f ( ·𝑠𝐴)𝐷))))
Distinct variable groups:   𝐴,𝑖,𝑗   𝐵,𝑗   𝐶,𝑖,𝑗   𝐷,𝑖,𝑗   𝑖,𝐸,𝑗   𝑖,𝐺,𝑗   𝑖,𝐻,𝑗   𝑗,𝐿   𝑈,𝑖   𝑖,𝑋,𝑗   𝑖,𝑌,𝑗   𝜑,𝑖,𝑗
Allowed substitution hints:   𝐵(𝑖)   𝑈(𝑗)   𝐹(𝑖,𝑗)   𝐾(𝑖,𝑗)   𝐿(𝑖)   𝑉(𝑖,𝑗)   𝑍(𝑖,𝑗)

Proof of Theorem fedgmullem1
Dummy variables 𝑢 𝑘 𝑙 𝑔 𝑤 𝑣 are mutually distinct and distinct from all other variables.
StepHypRef Expression
1 fedgmullem1.g . . . . 5 (𝜑𝐺:𝑌⟶((Base‘(Scalar‘𝐶)) ↑m 𝑋))
2 simpllr 774 . . . . . . . . . . . . 13 ((((𝜑𝐺:𝑌⟶((Base‘(Scalar‘𝐶)) ↑m 𝑋)) ∧ 𝑗𝑌) ∧ 𝑖𝑋) → 𝐺:𝑌⟶((Base‘(Scalar‘𝐶)) ↑m 𝑋))
3 simplr 767 . . . . . . . . . . . . 13 ((((𝜑𝐺:𝑌⟶((Base‘(Scalar‘𝐶)) ↑m 𝑋)) ∧ 𝑗𝑌) ∧ 𝑖𝑋) → 𝑗𝑌)
42, 3ffvelrnd 6852 . . . . . . . . . . . 12 ((((𝜑𝐺:𝑌⟶((Base‘(Scalar‘𝐶)) ↑m 𝑋)) ∧ 𝑗𝑌) ∧ 𝑖𝑋) → (𝐺𝑗) ∈ ((Base‘(Scalar‘𝐶)) ↑m 𝑋))
5 elmapi 8428 . . . . . . . . . . . 12 ((𝐺𝑗) ∈ ((Base‘(Scalar‘𝐶)) ↑m 𝑋) → (𝐺𝑗):𝑋⟶(Base‘(Scalar‘𝐶)))
64, 5syl 17 . . . . . . . . . . 11 ((((𝜑𝐺:𝑌⟶((Base‘(Scalar‘𝐶)) ↑m 𝑋)) ∧ 𝑗𝑌) ∧ 𝑖𝑋) → (𝐺𝑗):𝑋⟶(Base‘(Scalar‘𝐶)))
76anasss 469 . . . . . . . . . 10 (((𝜑𝐺:𝑌⟶((Base‘(Scalar‘𝐶)) ↑m 𝑋)) ∧ (𝑗𝑌𝑖𝑋)) → (𝐺𝑗):𝑋⟶(Base‘(Scalar‘𝐶)))
8 simprr 771 . . . . . . . . . 10 (((𝜑𝐺:𝑌⟶((Base‘(Scalar‘𝐶)) ↑m 𝑋)) ∧ (𝑗𝑌𝑖𝑋)) → 𝑖𝑋)
97, 8ffvelrnd 6852 . . . . . . . . 9 (((𝜑𝐺:𝑌⟶((Base‘(Scalar‘𝐶)) ↑m 𝑋)) ∧ (𝑗𝑌𝑖𝑋)) → ((𝐺𝑗)‘𝑖) ∈ (Base‘(Scalar‘𝐶)))
10 fedgmul.k . . . . . . . . . . . . 13 𝐾 = (𝐸s 𝑉)
11 fedgmul.a . . . . . . . . . . . . . . 15 𝐴 = ((subringAlg ‘𝐸)‘𝑉)
1211a1i 11 . . . . . . . . . . . . . 14 (𝜑𝐴 = ((subringAlg ‘𝐸)‘𝑉))
13 fedgmul.4 . . . . . . . . . . . . . . . . 17 (𝜑𝑈 ∈ (SubRing‘𝐸))
14 fedgmul.5 . . . . . . . . . . . . . . . . 17 (𝜑𝑉 ∈ (SubRing‘𝐹))
15 fedgmul.f . . . . . . . . . . . . . . . . . . 19 𝐹 = (𝐸s 𝑈)
1615subsubrg 19561 . . . . . . . . . . . . . . . . . 18 (𝑈 ∈ (SubRing‘𝐸) → (𝑉 ∈ (SubRing‘𝐹) ↔ (𝑉 ∈ (SubRing‘𝐸) ∧ 𝑉𝑈)))
1716biimpa 479 . . . . . . . . . . . . . . . . 17 ((𝑈 ∈ (SubRing‘𝐸) ∧ 𝑉 ∈ (SubRing‘𝐹)) → (𝑉 ∈ (SubRing‘𝐸) ∧ 𝑉𝑈))
1813, 14, 17syl2anc 586 . . . . . . . . . . . . . . . 16 (𝜑 → (𝑉 ∈ (SubRing‘𝐸) ∧ 𝑉𝑈))
1918simpld 497 . . . . . . . . . . . . . . 15 (𝜑𝑉 ∈ (SubRing‘𝐸))
20 eqid 2821 . . . . . . . . . . . . . . . 16 (Base‘𝐸) = (Base‘𝐸)
2120subrgss 19536 . . . . . . . . . . . . . . 15 (𝑉 ∈ (SubRing‘𝐸) → 𝑉 ⊆ (Base‘𝐸))
2219, 21syl 17 . . . . . . . . . . . . . 14 (𝜑𝑉 ⊆ (Base‘𝐸))
2312, 22srasca 19953 . . . . . . . . . . . . 13 (𝜑 → (𝐸s 𝑉) = (Scalar‘𝐴))
2410, 23syl5eq 2868 . . . . . . . . . . . 12 (𝜑𝐾 = (Scalar‘𝐴))
2518simprd 498 . . . . . . . . . . . . . . 15 (𝜑𝑉𝑈)
26 ressabs 16563 . . . . . . . . . . . . . . 15 ((𝑈 ∈ (SubRing‘𝐸) ∧ 𝑉𝑈) → ((𝐸s 𝑈) ↾s 𝑉) = (𝐸s 𝑉))
2713, 25, 26syl2anc 586 . . . . . . . . . . . . . 14 (𝜑 → ((𝐸s 𝑈) ↾s 𝑉) = (𝐸s 𝑉))
2815oveq1i 7166 . . . . . . . . . . . . . 14 (𝐹s 𝑉) = ((𝐸s 𝑈) ↾s 𝑉)
2927, 28, 103eqtr4g 2881 . . . . . . . . . . . . 13 (𝜑 → (𝐹s 𝑉) = 𝐾)
30 fedgmul.c . . . . . . . . . . . . . . 15 𝐶 = ((subringAlg ‘𝐹)‘𝑉)
3130a1i 11 . . . . . . . . . . . . . 14 (𝜑𝐶 = ((subringAlg ‘𝐹)‘𝑉))
32 eqid 2821 . . . . . . . . . . . . . . . 16 (Base‘𝐹) = (Base‘𝐹)
3332subrgss 19536 . . . . . . . . . . . . . . 15 (𝑉 ∈ (SubRing‘𝐹) → 𝑉 ⊆ (Base‘𝐹))
3414, 33syl 17 . . . . . . . . . . . . . 14 (𝜑𝑉 ⊆ (Base‘𝐹))
3531, 34srasca 19953 . . . . . . . . . . . . 13 (𝜑 → (𝐹s 𝑉) = (Scalar‘𝐶))
3629, 35eqtr3d 2858 . . . . . . . . . . . 12 (𝜑𝐾 = (Scalar‘𝐶))
3724, 36eqtr3d 2858 . . . . . . . . . . 11 (𝜑 → (Scalar‘𝐴) = (Scalar‘𝐶))
3837fveq2d 6674 . . . . . . . . . 10 (𝜑 → (Base‘(Scalar‘𝐴)) = (Base‘(Scalar‘𝐶)))
3938ad2antrr 724 . . . . . . . . 9 (((𝜑𝐺:𝑌⟶((Base‘(Scalar‘𝐶)) ↑m 𝑋)) ∧ (𝑗𝑌𝑖𝑋)) → (Base‘(Scalar‘𝐴)) = (Base‘(Scalar‘𝐶)))
409, 39eleqtrrd 2916 . . . . . . . 8 (((𝜑𝐺:𝑌⟶((Base‘(Scalar‘𝐶)) ↑m 𝑋)) ∧ (𝑗𝑌𝑖𝑋)) → ((𝐺𝑗)‘𝑖) ∈ (Base‘(Scalar‘𝐴)))
4140ralrimivva 3191 . . . . . . 7 ((𝜑𝐺:𝑌⟶((Base‘(Scalar‘𝐶)) ↑m 𝑋)) → ∀𝑗𝑌𝑖𝑋 ((𝐺𝑗)‘𝑖) ∈ (Base‘(Scalar‘𝐴)))
42 fedgmullem.h . . . . . . . 8 𝐻 = (𝑗𝑌, 𝑖𝑋 ↦ ((𝐺𝑗)‘𝑖))
4342fmpo 7766 . . . . . . 7 (∀𝑗𝑌𝑖𝑋 ((𝐺𝑗)‘𝑖) ∈ (Base‘(Scalar‘𝐴)) ↔ 𝐻:(𝑌 × 𝑋)⟶(Base‘(Scalar‘𝐴)))
4441, 43sylib 220 . . . . . 6 ((𝜑𝐺:𝑌⟶((Base‘(Scalar‘𝐶)) ↑m 𝑋)) → 𝐻:(𝑌 × 𝑋)⟶(Base‘(Scalar‘𝐴)))
45 fvexd 6685 . . . . . . 7 ((𝜑𝐺:𝑌⟶((Base‘(Scalar‘𝐶)) ↑m 𝑋)) → (Base‘(Scalar‘𝐴)) ∈ V)
46 fedgmullem.y . . . . . . . . 9 (𝜑𝑌 ∈ (LBasis‘𝐵))
47 fedgmullem.x . . . . . . . . 9 (𝜑𝑋 ∈ (LBasis‘𝐶))
4846, 47xpexd 7474 . . . . . . . 8 (𝜑 → (𝑌 × 𝑋) ∈ V)
4948adantr 483 . . . . . . 7 ((𝜑𝐺:𝑌⟶((Base‘(Scalar‘𝐶)) ↑m 𝑋)) → (𝑌 × 𝑋) ∈ V)
5045, 49elmapd 8420 . . . . . 6 ((𝜑𝐺:𝑌⟶((Base‘(Scalar‘𝐶)) ↑m 𝑋)) → (𝐻 ∈ ((Base‘(Scalar‘𝐴)) ↑m (𝑌 × 𝑋)) ↔ 𝐻:(𝑌 × 𝑋)⟶(Base‘(Scalar‘𝐴))))
5144, 50mpbird 259 . . . . 5 ((𝜑𝐺:𝑌⟶((Base‘(Scalar‘𝐶)) ↑m 𝑋)) → 𝐻 ∈ ((Base‘(Scalar‘𝐴)) ↑m (𝑌 × 𝑋)))
521, 51mpdan 685 . . . 4 (𝜑𝐻 ∈ ((Base‘(Scalar‘𝐴)) ↑m (𝑌 × 𝑋)))
53 simpl 485 . . . . . . . . . . 11 ((𝜑𝑗𝑌) → 𝜑)
5453adantr 483 . . . . . . . . . 10 (((𝜑𝑗𝑌) ∧ 𝑖𝑋) → 𝜑)
551ffvelrnda 6851 . . . . . . . . . . . 12 ((𝜑𝑗𝑌) → (𝐺𝑗) ∈ ((Base‘(Scalar‘𝐶)) ↑m 𝑋))
5655, 5syl 17 . . . . . . . . . . 11 ((𝜑𝑗𝑌) → (𝐺𝑗):𝑋⟶(Base‘(Scalar‘𝐶)))
5756adantr 483 . . . . . . . . . 10 (((𝜑𝑗𝑌) ∧ 𝑖𝑋) → (𝐺𝑗):𝑋⟶(Base‘(Scalar‘𝐶)))
5838feq3d 6501 . . . . . . . . . . 11 (𝜑 → ((𝐺𝑗):𝑋⟶(Base‘(Scalar‘𝐴)) ↔ (𝐺𝑗):𝑋⟶(Base‘(Scalar‘𝐶))))
5958biimpar 480 . . . . . . . . . 10 ((𝜑 ∧ (𝐺𝑗):𝑋⟶(Base‘(Scalar‘𝐶))) → (𝐺𝑗):𝑋⟶(Base‘(Scalar‘𝐴)))
6054, 57, 59syl2anc 586 . . . . . . . . 9 (((𝜑𝑗𝑌) ∧ 𝑖𝑋) → (𝐺𝑗):𝑋⟶(Base‘(Scalar‘𝐴)))
61 simpr 487 . . . . . . . . 9 (((𝜑𝑗𝑌) ∧ 𝑖𝑋) → 𝑖𝑋)
6260, 61ffvelrnd 6852 . . . . . . . 8 (((𝜑𝑗𝑌) ∧ 𝑖𝑋) → ((𝐺𝑗)‘𝑖) ∈ (Base‘(Scalar‘𝐴)))
6362ralrimiva 3182 . . . . . . 7 ((𝜑𝑗𝑌) → ∀𝑖𝑋 ((𝐺𝑗)‘𝑖) ∈ (Base‘(Scalar‘𝐴)))
6463ralrimiva 3182 . . . . . 6 (𝜑 → ∀𝑗𝑌𝑖𝑋 ((𝐺𝑗)‘𝑖) ∈ (Base‘(Scalar‘𝐴)))
6564, 43sylib 220 . . . . 5 (𝜑𝐻:(𝑌 × 𝑋)⟶(Base‘(Scalar‘𝐴)))
6665ffund 6518 . . . 4 (𝜑 → Fun 𝐻)
67 fedgmul.1 . . . . . 6 (𝜑𝐸 ∈ DivRing)
68 drngring 19509 . . . . . 6 (𝐸 ∈ DivRing → 𝐸 ∈ Ring)
6967, 68syl 17 . . . . 5 (𝜑𝐸 ∈ Ring)
70 ringgrp 19302 . . . . 5 (𝐸 ∈ Ring → 𝐸 ∈ Grp)
71 eqid 2821 . . . . . 6 (0g𝐸) = (0g𝐸)
7220, 71grpidcl 18131 . . . . 5 (𝐸 ∈ Grp → (0g𝐸) ∈ (Base‘𝐸))
7369, 70, 723syl 18 . . . 4 (𝜑 → (0g𝐸) ∈ (Base‘𝐸))
74 fedgmullem1.1 . . . . . . 7 (𝜑𝐿 finSupp (0g‘(Scalar‘𝐵)))
7574fsuppimpd 8840 . . . . . 6 (𝜑 → (𝐿 supp (0g‘(Scalar‘𝐵))) ∈ Fin)
76 simpl 485 . . . . . . . 8 ((𝜑𝑗 ∈ (𝑌 ∖ (𝐿 supp (0g‘(Scalar‘𝐵))))) → 𝜑)
77 simpr 487 . . . . . . . . 9 ((𝜑𝑗 ∈ (𝑌 ∖ (𝐿 supp (0g‘(Scalar‘𝐵))))) → 𝑗 ∈ (𝑌 ∖ (𝐿 supp (0g‘(Scalar‘𝐵)))))
7877eldifad 3948 . . . . . . . 8 ((𝜑𝑗 ∈ (𝑌 ∖ (𝐿 supp (0g‘(Scalar‘𝐵))))) → 𝑗𝑌)
79 fedgmullem1.l . . . . . . . . . 10 (𝜑𝐿:𝑌⟶(Base‘(Scalar‘𝐵)))
80 ssidd 3990 . . . . . . . . . 10 (𝜑 → (𝐿 supp (0g‘(Scalar‘𝐵))) ⊆ (𝐿 supp (0g‘(Scalar‘𝐵))))
81 fvexd 6685 . . . . . . . . . 10 (𝜑 → (0g‘(Scalar‘𝐵)) ∈ V)
8279, 80, 46, 81suppssr 7861 . . . . . . . . 9 ((𝜑𝑗 ∈ (𝑌 ∖ (𝐿 supp (0g‘(Scalar‘𝐵))))) → (𝐿𝑗) = (0g‘(Scalar‘𝐵)))
83 fedgmullem1.3 . . . . . . . . . 10 ((𝜑𝑗𝑌) → (𝐿𝑗) = (𝐶 Σg (𝑖𝑋 ↦ (((𝐺𝑗)‘𝑖)( ·𝑠𝐶)𝑖))))
8478, 83syldan 593 . . . . . . . . 9 ((𝜑𝑗 ∈ (𝑌 ∖ (𝐿 supp (0g‘(Scalar‘𝐵))))) → (𝐿𝑗) = (𝐶 Σg (𝑖𝑋 ↦ (((𝐺𝑗)‘𝑖)( ·𝑠𝐶)𝑖))))
85 fedgmul.b . . . . . . . . . . . . . . 15 𝐵 = ((subringAlg ‘𝐸)‘𝑈)
8685a1i 11 . . . . . . . . . . . . . 14 (𝜑𝐵 = ((subringAlg ‘𝐸)‘𝑈))
8720subrgss 19536 . . . . . . . . . . . . . . 15 (𝑈 ∈ (SubRing‘𝐸) → 𝑈 ⊆ (Base‘𝐸))
8813, 87syl 17 . . . . . . . . . . . . . 14 (𝜑𝑈 ⊆ (Base‘𝐸))
8986, 88srasca 19953 . . . . . . . . . . . . 13 (𝜑 → (𝐸s 𝑈) = (Scalar‘𝐵))
9015, 89syl5eq 2868 . . . . . . . . . . . 12 (𝜑𝐹 = (Scalar‘𝐵))
9190fveq2d 6674 . . . . . . . . . . 11 (𝜑 → (0g𝐹) = (0g‘(Scalar‘𝐵)))
92 fedgmul.2 . . . . . . . . . . . 12 (𝜑𝐹 ∈ DivRing)
9330, 92, 14drgext0g 30992 . . . . . . . . . . 11 (𝜑 → (0g𝐹) = (0g𝐶))
9491, 93eqtr3d 2858 . . . . . . . . . 10 (𝜑 → (0g‘(Scalar‘𝐵)) = (0g𝐶))
9594adantr 483 . . . . . . . . 9 ((𝜑𝑗 ∈ (𝑌 ∖ (𝐿 supp (0g‘(Scalar‘𝐵))))) → (0g‘(Scalar‘𝐵)) = (0g𝐶))
9682, 84, 953eqtr3d 2864 . . . . . . . 8 ((𝜑𝑗 ∈ (𝑌 ∖ (𝐿 supp (0g‘(Scalar‘𝐵))))) → (𝐶 Σg (𝑖𝑋 ↦ (((𝐺𝑗)‘𝑖)( ·𝑠𝐶)𝑖))) = (0g𝐶))
97 fedgmullem1.2 . . . . . . . . . 10 ((𝜑𝑗𝑌) → (𝐺𝑗) finSupp (0g‘(Scalar‘𝐶)))
98 breq1 5069 . . . . . . . . . . . . 13 (𝑔 = (𝐺𝑗) → (𝑔 finSupp (0g‘(Scalar‘𝐶)) ↔ (𝐺𝑗) finSupp (0g‘(Scalar‘𝐶))))
99 fveq1 6669 . . . . . . . . . . . . . . . . 17 (𝑔 = (𝐺𝑗) → (𝑔𝑖) = ((𝐺𝑗)‘𝑖))
10099oveq1d 7171 . . . . . . . . . . . . . . . 16 (𝑔 = (𝐺𝑗) → ((𝑔𝑖)( ·𝑠𝐶)𝑖) = (((𝐺𝑗)‘𝑖)( ·𝑠𝐶)𝑖))
101100mpteq2dv 5162 . . . . . . . . . . . . . . 15 (𝑔 = (𝐺𝑗) → (𝑖𝑋 ↦ ((𝑔𝑖)( ·𝑠𝐶)𝑖)) = (𝑖𝑋 ↦ (((𝐺𝑗)‘𝑖)( ·𝑠𝐶)𝑖)))
102101oveq2d 7172 . . . . . . . . . . . . . 14 (𝑔 = (𝐺𝑗) → (𝐶 Σg (𝑖𝑋 ↦ ((𝑔𝑖)( ·𝑠𝐶)𝑖))) = (𝐶 Σg (𝑖𝑋 ↦ (((𝐺𝑗)‘𝑖)( ·𝑠𝐶)𝑖))))
103102eqeq1d 2823 . . . . . . . . . . . . 13 (𝑔 = (𝐺𝑗) → ((𝐶 Σg (𝑖𝑋 ↦ ((𝑔𝑖)( ·𝑠𝐶)𝑖))) = (0g𝐶) ↔ (𝐶 Σg (𝑖𝑋 ↦ (((𝐺𝑗)‘𝑖)( ·𝑠𝐶)𝑖))) = (0g𝐶)))
10498, 103anbi12d 632 . . . . . . . . . . . 12 (𝑔 = (𝐺𝑗) → ((𝑔 finSupp (0g‘(Scalar‘𝐶)) ∧ (𝐶 Σg (𝑖𝑋 ↦ ((𝑔𝑖)( ·𝑠𝐶)𝑖))) = (0g𝐶)) ↔ ((𝐺𝑗) finSupp (0g‘(Scalar‘𝐶)) ∧ (𝐶 Σg (𝑖𝑋 ↦ (((𝐺𝑗)‘𝑖)( ·𝑠𝐶)𝑖))) = (0g𝐶))))
105 eqeq1 2825 . . . . . . . . . . . 12 (𝑔 = (𝐺𝑗) → (𝑔 = (𝑋 × {(0g‘(Scalar‘𝐶))}) ↔ (𝐺𝑗) = (𝑋 × {(0g‘(Scalar‘𝐶))})))
106104, 105imbi12d 347 . . . . . . . . . . 11 (𝑔 = (𝐺𝑗) → (((𝑔 finSupp (0g‘(Scalar‘𝐶)) ∧ (𝐶 Σg (𝑖𝑋 ↦ ((𝑔𝑖)( ·𝑠𝐶)𝑖))) = (0g𝐶)) → 𝑔 = (𝑋 × {(0g‘(Scalar‘𝐶))})) ↔ (((𝐺𝑗) finSupp (0g‘(Scalar‘𝐶)) ∧ (𝐶 Σg (𝑖𝑋 ↦ (((𝐺𝑗)‘𝑖)( ·𝑠𝐶)𝑖))) = (0g𝐶)) → (𝐺𝑗) = (𝑋 × {(0g‘(Scalar‘𝐶))}))))
107 fedgmul.3 . . . . . . . . . . . . . . . 16 (𝜑𝐾 ∈ DivRing)
10829, 107eqeltrd 2913 . . . . . . . . . . . . . . 15 (𝜑 → (𝐹s 𝑉) ∈ DivRing)
109 eqid 2821 . . . . . . . . . . . . . . . 16 (𝐹s 𝑉) = (𝐹s 𝑉)
11030, 109sralvec 30990 . . . . . . . . . . . . . . 15 ((𝐹 ∈ DivRing ∧ (𝐹s 𝑉) ∈ DivRing ∧ 𝑉 ∈ (SubRing‘𝐹)) → 𝐶 ∈ LVec)
11192, 108, 14, 110syl3anc 1367 . . . . . . . . . . . . . 14 (𝜑𝐶 ∈ LVec)
112 lveclmod 19878 . . . . . . . . . . . . . 14 (𝐶 ∈ LVec → 𝐶 ∈ LMod)
113111, 112syl 17 . . . . . . . . . . . . 13 (𝜑𝐶 ∈ LMod)
114113adantr 483 . . . . . . . . . . . 12 ((𝜑𝑗𝑌) → 𝐶 ∈ LMod)
115 eqid 2821 . . . . . . . . . . . . . . 15 (Base‘𝐶) = (Base‘𝐶)
116 eqid 2821 . . . . . . . . . . . . . . 15 (LBasis‘𝐶) = (LBasis‘𝐶)
117115, 116lbsss 19849 . . . . . . . . . . . . . 14 (𝑋 ∈ (LBasis‘𝐶) → 𝑋 ⊆ (Base‘𝐶))
11847, 117syl 17 . . . . . . . . . . . . 13 (𝜑𝑋 ⊆ (Base‘𝐶))
119118adantr 483 . . . . . . . . . . . 12 ((𝜑𝑗𝑌) → 𝑋 ⊆ (Base‘𝐶))
120 eqid 2821 . . . . . . . . . . . . . . . 16 (LSpan‘𝐶) = (LSpan‘𝐶)
121115, 116, 120islbs4 20976 . . . . . . . . . . . . . . 15 (𝑋 ∈ (LBasis‘𝐶) ↔ (𝑋 ∈ (LIndS‘𝐶) ∧ ((LSpan‘𝐶)‘𝑋) = (Base‘𝐶)))
12247, 121sylib 220 . . . . . . . . . . . . . 14 (𝜑 → (𝑋 ∈ (LIndS‘𝐶) ∧ ((LSpan‘𝐶)‘𝑋) = (Base‘𝐶)))
123122simpld 497 . . . . . . . . . . . . 13 (𝜑𝑋 ∈ (LIndS‘𝐶))
124123adantr 483 . . . . . . . . . . . 12 ((𝜑𝑗𝑌) → 𝑋 ∈ (LIndS‘𝐶))
125 eqid 2821 . . . . . . . . . . . . . 14 (Base‘(Scalar‘𝐶)) = (Base‘(Scalar‘𝐶))
126 eqid 2821 . . . . . . . . . . . . . 14 (Scalar‘𝐶) = (Scalar‘𝐶)
127 eqid 2821 . . . . . . . . . . . . . 14 ( ·𝑠𝐶) = ( ·𝑠𝐶)
128 eqid 2821 . . . . . . . . . . . . . 14 (0g𝐶) = (0g𝐶)
129 eqid 2821 . . . . . . . . . . . . . 14 (0g‘(Scalar‘𝐶)) = (0g‘(Scalar‘𝐶))
130115, 125, 126, 127, 128, 129islinds5 30932 . . . . . . . . . . . . 13 ((𝐶 ∈ LMod ∧ 𝑋 ⊆ (Base‘𝐶)) → (𝑋 ∈ (LIndS‘𝐶) ↔ ∀𝑔 ∈ ((Base‘(Scalar‘𝐶)) ↑m 𝑋)((𝑔 finSupp (0g‘(Scalar‘𝐶)) ∧ (𝐶 Σg (𝑖𝑋 ↦ ((𝑔𝑖)( ·𝑠𝐶)𝑖))) = (0g𝐶)) → 𝑔 = (𝑋 × {(0g‘(Scalar‘𝐶))}))))
131130biimpa 479 . . . . . . . . . . . 12 (((𝐶 ∈ LMod ∧ 𝑋 ⊆ (Base‘𝐶)) ∧ 𝑋 ∈ (LIndS‘𝐶)) → ∀𝑔 ∈ ((Base‘(Scalar‘𝐶)) ↑m 𝑋)((𝑔 finSupp (0g‘(Scalar‘𝐶)) ∧ (𝐶 Σg (𝑖𝑋 ↦ ((𝑔𝑖)( ·𝑠𝐶)𝑖))) = (0g𝐶)) → 𝑔 = (𝑋 × {(0g‘(Scalar‘𝐶))})))
132114, 119, 124, 131syl21anc 835 . . . . . . . . . . 11 ((𝜑𝑗𝑌) → ∀𝑔 ∈ ((Base‘(Scalar‘𝐶)) ↑m 𝑋)((𝑔 finSupp (0g‘(Scalar‘𝐶)) ∧ (𝐶 Σg (𝑖𝑋 ↦ ((𝑔𝑖)( ·𝑠𝐶)𝑖))) = (0g𝐶)) → 𝑔 = (𝑋 × {(0g‘(Scalar‘𝐶))})))
133106, 132, 55rspcdva 3625 . . . . . . . . . 10 ((𝜑𝑗𝑌) → (((𝐺𝑗) finSupp (0g‘(Scalar‘𝐶)) ∧ (𝐶 Σg (𝑖𝑋 ↦ (((𝐺𝑗)‘𝑖)( ·𝑠𝐶)𝑖))) = (0g𝐶)) → (𝐺𝑗) = (𝑋 × {(0g‘(Scalar‘𝐶))})))
13497, 133mpand 693 . . . . . . . . 9 ((𝜑𝑗𝑌) → ((𝐶 Σg (𝑖𝑋 ↦ (((𝐺𝑗)‘𝑖)( ·𝑠𝐶)𝑖))) = (0g𝐶) → (𝐺𝑗) = (𝑋 × {(0g‘(Scalar‘𝐶))})))
135134imp 409 . . . . . . . 8 (((𝜑𝑗𝑌) ∧ (𝐶 Σg (𝑖𝑋 ↦ (((𝐺𝑗)‘𝑖)( ·𝑠𝐶)𝑖))) = (0g𝐶)) → (𝐺𝑗) = (𝑋 × {(0g‘(Scalar‘𝐶))}))
13676, 78, 96, 135syl21anc 835 . . . . . . 7 ((𝜑𝑗 ∈ (𝑌 ∖ (𝐿 supp (0g‘(Scalar‘𝐵))))) → (𝐺𝑗) = (𝑋 × {(0g‘(Scalar‘𝐶))}))
1371, 136suppss 7860 . . . . . 6 (𝜑 → (𝐺 supp (𝑋 × {(0g‘(Scalar‘𝐶))})) ⊆ (𝐿 supp (0g‘(Scalar‘𝐵))))
13875, 137ssfid 8741 . . . . 5 (𝜑 → (𝐺 supp (𝑋 × {(0g‘(Scalar‘𝐶))})) ∈ Fin)
139 suppssdm 7843 . . . . . . . . . 10 (𝐺 supp (𝑋 × {(0g‘(Scalar‘𝐶))})) ⊆ dom 𝐺
140139, 1fssdm 6530 . . . . . . . . 9 (𝜑 → (𝐺 supp (𝑋 × {(0g‘(Scalar‘𝐶))})) ⊆ 𝑌)
141140sselda 3967 . . . . . . . 8 ((𝜑𝑤 ∈ (𝐺 supp (𝑋 × {(0g‘(Scalar‘𝐶))}))) → 𝑤𝑌)
142 eleq1w 2895 . . . . . . . . . . . 12 (𝑗 = 𝑤 → (𝑗𝑌𝑤𝑌))
143142anbi2d 630 . . . . . . . . . . 11 (𝑗 = 𝑤 → ((𝜑𝑗𝑌) ↔ (𝜑𝑤𝑌)))
144 fveq2 6670 . . . . . . . . . . . 12 (𝑗 = 𝑤 → (𝐺𝑗) = (𝐺𝑤))
145144breq1d 5076 . . . . . . . . . . 11 (𝑗 = 𝑤 → ((𝐺𝑗) finSupp (0g‘(Scalar‘𝐶)) ↔ (𝐺𝑤) finSupp (0g‘(Scalar‘𝐶))))
146143, 145imbi12d 347 . . . . . . . . . 10 (𝑗 = 𝑤 → (((𝜑𝑗𝑌) → (𝐺𝑗) finSupp (0g‘(Scalar‘𝐶))) ↔ ((𝜑𝑤𝑌) → (𝐺𝑤) finSupp (0g‘(Scalar‘𝐶)))))
147146, 97chvarvv 2005 . . . . . . . . 9 ((𝜑𝑤𝑌) → (𝐺𝑤) finSupp (0g‘(Scalar‘𝐶)))
148147fsuppimpd 8840 . . . . . . . 8 ((𝜑𝑤𝑌) → ((𝐺𝑤) supp (0g‘(Scalar‘𝐶))) ∈ Fin)
149141, 148syldan 593 . . . . . . 7 ((𝜑𝑤 ∈ (𝐺 supp (𝑋 × {(0g‘(Scalar‘𝐶))}))) → ((𝐺𝑤) supp (0g‘(Scalar‘𝐶))) ∈ Fin)
150149ralrimiva 3182 . . . . . 6 (𝜑 → ∀𝑤 ∈ (𝐺 supp (𝑋 × {(0g‘(Scalar‘𝐶))}))((𝐺𝑤) supp (0g‘(Scalar‘𝐶))) ∈ Fin)
151 iunfi 8812 . . . . . 6 (((𝐺 supp (𝑋 × {(0g‘(Scalar‘𝐶))})) ∈ Fin ∧ ∀𝑤 ∈ (𝐺 supp (𝑋 × {(0g‘(Scalar‘𝐶))}))((𝐺𝑤) supp (0g‘(Scalar‘𝐶))) ∈ Fin) → 𝑤 ∈ (𝐺 supp (𝑋 × {(0g‘(Scalar‘𝐶))}))((𝐺𝑤) supp (0g‘(Scalar‘𝐶))) ∈ Fin)
152138, 150, 151syl2anc 586 . . . . 5 (𝜑 𝑤 ∈ (𝐺 supp (𝑋 × {(0g‘(Scalar‘𝐶))}))((𝐺𝑤) supp (0g‘(Scalar‘𝐶))) ∈ Fin)
153 xpfi 8789 . . . . 5 (((𝐺 supp (𝑋 × {(0g‘(Scalar‘𝐶))})) ∈ Fin ∧ 𝑤 ∈ (𝐺 supp (𝑋 × {(0g‘(Scalar‘𝐶))}))((𝐺𝑤) supp (0g‘(Scalar‘𝐶))) ∈ Fin) → ((𝐺 supp (𝑋 × {(0g‘(Scalar‘𝐶))})) × 𝑤 ∈ (𝐺 supp (𝑋 × {(0g‘(Scalar‘𝐶))}))((𝐺𝑤) supp (0g‘(Scalar‘𝐶)))) ∈ Fin)
154138, 152, 153syl2anc 586 . . . 4 (𝜑 → ((𝐺 supp (𝑋 × {(0g‘(Scalar‘𝐶))})) × 𝑤 ∈ (𝐺 supp (𝑋 × {(0g‘(Scalar‘𝐶))}))((𝐺𝑤) supp (0g‘(Scalar‘𝐶)))) ∈ Fin)
155 fveq2 6670 . . . . . . . . . 10 (𝑣 = 𝑗 → (𝐺𝑣) = (𝐺𝑗))
156155fveq1d 6672 . . . . . . . . 9 (𝑣 = 𝑗 → ((𝐺𝑣)‘𝑢) = ((𝐺𝑗)‘𝑢))
157156mpteq2dv 5162 . . . . . . . 8 (𝑣 = 𝑗 → (𝑢𝑋 ↦ ((𝐺𝑣)‘𝑢)) = (𝑢𝑋 ↦ ((𝐺𝑗)‘𝑢)))
158 fveq2 6670 . . . . . . . . 9 (𝑢 = 𝑖 → ((𝐺𝑗)‘𝑢) = ((𝐺𝑗)‘𝑖))
159158cbvmptv 5169 . . . . . . . 8 (𝑢𝑋 ↦ ((𝐺𝑗)‘𝑢)) = (𝑖𝑋 ↦ ((𝐺𝑗)‘𝑖))
160157, 159syl6eq 2872 . . . . . . 7 (𝑣 = 𝑗 → (𝑢𝑋 ↦ ((𝐺𝑣)‘𝑢)) = (𝑖𝑋 ↦ ((𝐺𝑗)‘𝑖)))
161160cbvmptv 5169 . . . . . 6 (𝑣𝑌 ↦ (𝑢𝑋 ↦ ((𝐺𝑣)‘𝑢))) = (𝑗𝑌 ↦ (𝑖𝑋 ↦ ((𝐺𝑗)‘𝑖)))
162 fvexd 6685 . . . . . 6 (𝜑 → (0g‘(Scalar‘𝐶)) ∈ V)
163 fvexd 6685 . . . . . 6 ((𝜑 ∧ (𝑗𝑌𝑖𝑋)) → ((𝐺𝑗)‘𝑖) ∈ V)
16442, 161, 46, 47, 162, 163suppovss 30426 . . . . 5 (𝜑 → (𝐻 supp (0g‘(Scalar‘𝐶))) ⊆ (((𝑣𝑌 ↦ (𝑢𝑋 ↦ ((𝐺𝑣)‘𝑢))) supp (𝑋 × {(0g‘(Scalar‘𝐶))})) × 𝑤 ∈ ((𝑣𝑌 ↦ (𝑢𝑋 ↦ ((𝐺𝑣)‘𝑢))) supp (𝑋 × {(0g‘(Scalar‘𝐶))}))(((𝑣𝑌 ↦ (𝑢𝑋 ↦ ((𝐺𝑣)‘𝑢)))‘𝑤) supp (0g‘(Scalar‘𝐶)))))
16510, 71subrg0 19542 . . . . . . . 8 (𝑉 ∈ (SubRing‘𝐸) → (0g𝐸) = (0g𝐾))
16619, 165syl 17 . . . . . . 7 (𝜑 → (0g𝐸) = (0g𝐾))
16736fveq2d 6674 . . . . . . 7 (𝜑 → (0g𝐾) = (0g‘(Scalar‘𝐶)))
168166, 167eqtr2d 2857 . . . . . 6 (𝜑 → (0g‘(Scalar‘𝐶)) = (0g𝐸))
169168oveq2d 7172 . . . . 5 (𝜑 → (𝐻 supp (0g‘(Scalar‘𝐶))) = (𝐻 supp (0g𝐸)))
1701feqmptd 6733 . . . . . . . 8 (𝜑𝐺 = (𝑣𝑌 ↦ (𝐺𝑣)))
171 eleq1w 2895 . . . . . . . . . . . . 13 (𝑗 = 𝑣 → (𝑗𝑌𝑣𝑌))
172171anbi2d 630 . . . . . . . . . . . 12 (𝑗 = 𝑣 → ((𝜑𝑗𝑌) ↔ (𝜑𝑣𝑌)))
173 fveq2 6670 . . . . . . . . . . . . 13 (𝑗 = 𝑣 → (𝐺𝑗) = (𝐺𝑣))
174173feq1d 6499 . . . . . . . . . . . 12 (𝑗 = 𝑣 → ((𝐺𝑗):𝑋⟶(Base‘𝐸) ↔ (𝐺𝑣):𝑋⟶(Base‘𝐸)))
175172, 174imbi12d 347 . . . . . . . . . . 11 (𝑗 = 𝑣 → (((𝜑𝑗𝑌) → (𝐺𝑗):𝑋⟶(Base‘𝐸)) ↔ ((𝜑𝑣𝑌) → (𝐺𝑣):𝑋⟶(Base‘𝐸))))
17610, 20ressbas2 16555 . . . . . . . . . . . . . . . 16 (𝑉 ⊆ (Base‘𝐸) → 𝑉 = (Base‘𝐾))
17722, 176syl 17 . . . . . . . . . . . . . . 15 (𝜑𝑉 = (Base‘𝐾))
17836fveq2d 6674 . . . . . . . . . . . . . . 15 (𝜑 → (Base‘𝐾) = (Base‘(Scalar‘𝐶)))
179177, 178eqtrd 2856 . . . . . . . . . . . . . 14 (𝜑𝑉 = (Base‘(Scalar‘𝐶)))
180179, 22eqsstrrd 4006 . . . . . . . . . . . . 13 (𝜑 → (Base‘(Scalar‘𝐶)) ⊆ (Base‘𝐸))
181180adantr 483 . . . . . . . . . . . 12 ((𝜑𝑗𝑌) → (Base‘(Scalar‘𝐶)) ⊆ (Base‘𝐸))
18256, 181fssd 6528 . . . . . . . . . . 11 ((𝜑𝑗𝑌) → (𝐺𝑗):𝑋⟶(Base‘𝐸))
183175, 182chvarvv 2005 . . . . . . . . . 10 ((𝜑𝑣𝑌) → (𝐺𝑣):𝑋⟶(Base‘𝐸))
184183feqmptd 6733 . . . . . . . . 9 ((𝜑𝑣𝑌) → (𝐺𝑣) = (𝑢𝑋 ↦ ((𝐺𝑣)‘𝑢)))
185184mpteq2dva 5161 . . . . . . . 8 (𝜑 → (𝑣𝑌 ↦ (𝐺𝑣)) = (𝑣𝑌 ↦ (𝑢𝑋 ↦ ((𝐺𝑣)‘𝑢))))
186170, 185eqtr2d 2857 . . . . . . 7 (𝜑 → (𝑣𝑌 ↦ (𝑢𝑋 ↦ ((𝐺𝑣)‘𝑢))) = 𝐺)
187186oveq1d 7171 . . . . . 6 (𝜑 → ((𝑣𝑌 ↦ (𝑢𝑋 ↦ ((𝐺𝑣)‘𝑢))) supp (𝑋 × {(0g‘(Scalar‘𝐶))})) = (𝐺 supp (𝑋 × {(0g‘(Scalar‘𝐶))})))
188186fveq1d 6672 . . . . . . . 8 (𝜑 → ((𝑣𝑌 ↦ (𝑢𝑋 ↦ ((𝐺𝑣)‘𝑢)))‘𝑤) = (𝐺𝑤))
189188oveq1d 7171 . . . . . . 7 (𝜑 → (((𝑣𝑌 ↦ (𝑢𝑋 ↦ ((𝐺𝑣)‘𝑢)))‘𝑤) supp (0g‘(Scalar‘𝐶))) = ((𝐺𝑤) supp (0g‘(Scalar‘𝐶))))
190187, 189iuneq12d 4947 . . . . . 6 (𝜑 𝑤 ∈ ((𝑣𝑌 ↦ (𝑢𝑋 ↦ ((𝐺𝑣)‘𝑢))) supp (𝑋 × {(0g‘(Scalar‘𝐶))}))(((𝑣𝑌 ↦ (𝑢𝑋 ↦ ((𝐺𝑣)‘𝑢)))‘𝑤) supp (0g‘(Scalar‘𝐶))) = 𝑤 ∈ (𝐺 supp (𝑋 × {(0g‘(Scalar‘𝐶))}))((𝐺𝑤) supp (0g‘(Scalar‘𝐶))))
191187, 190xpeq12d 5586 . . . . 5 (𝜑 → (((𝑣𝑌 ↦ (𝑢𝑋 ↦ ((𝐺𝑣)‘𝑢))) supp (𝑋 × {(0g‘(Scalar‘𝐶))})) × 𝑤 ∈ ((𝑣𝑌 ↦ (𝑢𝑋 ↦ ((𝐺𝑣)‘𝑢))) supp (𝑋 × {(0g‘(Scalar‘𝐶))}))(((𝑣𝑌 ↦ (𝑢𝑋 ↦ ((𝐺𝑣)‘𝑢)))‘𝑤) supp (0g‘(Scalar‘𝐶)))) = ((𝐺 supp (𝑋 × {(0g‘(Scalar‘𝐶))})) × 𝑤 ∈ (𝐺 supp (𝑋 × {(0g‘(Scalar‘𝐶))}))((𝐺𝑤) supp (0g‘(Scalar‘𝐶)))))
192164, 169, 1913sstr3d 4013 . . . 4 (𝜑 → (𝐻 supp (0g𝐸)) ⊆ ((𝐺 supp (𝑋 × {(0g‘(Scalar‘𝐶))})) × 𝑤 ∈ (𝐺 supp (𝑋 × {(0g‘(Scalar‘𝐶))}))((𝐺𝑤) supp (0g‘(Scalar‘𝐶)))))
193 suppssfifsupp 8848 . . . 4 (((𝐻 ∈ ((Base‘(Scalar‘𝐴)) ↑m (𝑌 × 𝑋)) ∧ Fun 𝐻 ∧ (0g𝐸) ∈ (Base‘𝐸)) ∧ (((𝐺 supp (𝑋 × {(0g‘(Scalar‘𝐶))})) × 𝑤 ∈ (𝐺 supp (𝑋 × {(0g‘(Scalar‘𝐶))}))((𝐺𝑤) supp (0g‘(Scalar‘𝐶)))) ∈ Fin ∧ (𝐻 supp (0g𝐸)) ⊆ ((𝐺 supp (𝑋 × {(0g‘(Scalar‘𝐶))})) × 𝑤 ∈ (𝐺 supp (𝑋 × {(0g‘(Scalar‘𝐶))}))((𝐺𝑤) supp (0g‘(Scalar‘𝐶)))))) → 𝐻 finSupp (0g𝐸))
19452, 66, 73, 154, 192, 193syl32anc 1374 . . 3 (𝜑𝐻 finSupp (0g𝐸))
19537fveq2d 6674 . . . 4 (𝜑 → (0g‘(Scalar‘𝐴)) = (0g‘(Scalar‘𝐶)))
196195, 168eqtr2d 2857 . . 3 (𝜑 → (0g𝐸) = (0g‘(Scalar‘𝐴)))
197194, 196breqtrd 5092 . 2 (𝜑𝐻 finSupp (0g‘(Scalar‘𝐴)))
198 fedgmullem1.z . . 3 (𝜑𝑍 = (𝐵 Σg (𝑗𝑌 ↦ ((𝐿𝑗)( ·𝑠𝐵)𝑗))))
19985, 67, 13, 15, 92, 46drgextgsum 30997 . . 3 (𝜑 → (𝐸 Σg (𝑗𝑌 ↦ ((𝐿𝑗)( ·𝑠𝐵)𝑗))) = (𝐵 Σg (𝑗𝑌 ↦ ((𝐿𝑗)( ·𝑠𝐵)𝑗))))
20047adantr 483 . . . . . . . . . . . 12 ((𝜑𝑗𝑌) → 𝑋 ∈ (LBasis‘𝐶))
20113adantr 483 . . . . . . . . . . . . 13 ((𝜑𝑗𝑌) → 𝑈 ∈ (SubRing‘𝐸))
202 subrgsubg 19541 . . . . . . . . . . . . 13 (𝑈 ∈ (SubRing‘𝐸) → 𝑈 ∈ (SubGrp‘𝐸))
203 subgsubm 18301 . . . . . . . . . . . . 13 (𝑈 ∈ (SubGrp‘𝐸) → 𝑈 ∈ (SubMnd‘𝐸))
204201, 202, 2033syl 18 . . . . . . . . . . . 12 ((𝜑𝑗𝑌) → 𝑈 ∈ (SubMnd‘𝐸))
205113ad2antrr 724 . . . . . . . . . . . . . . 15 (((𝜑𝑗𝑌) ∧ 𝑖𝑋) → 𝐶 ∈ LMod)
20656ffvelrnda 6851 . . . . . . . . . . . . . . 15 (((𝜑𝑗𝑌) ∧ 𝑖𝑋) → ((𝐺𝑗)‘𝑖) ∈ (Base‘(Scalar‘𝐶)))
207118ad2antrr 724 . . . . . . . . . . . . . . . 16 (((𝜑𝑗𝑌) ∧ 𝑖𝑋) → 𝑋 ⊆ (Base‘𝐶))
208207, 61sseldd 3968 . . . . . . . . . . . . . . 15 (((𝜑𝑗𝑌) ∧ 𝑖𝑋) → 𝑖 ∈ (Base‘𝐶))
209115, 126, 127, 125lmodvscl 19651 . . . . . . . . . . . . . . 15 ((𝐶 ∈ LMod ∧ ((𝐺𝑗)‘𝑖) ∈ (Base‘(Scalar‘𝐶)) ∧ 𝑖 ∈ (Base‘𝐶)) → (((𝐺𝑗)‘𝑖)( ·𝑠𝐶)𝑖) ∈ (Base‘𝐶))
210205, 206, 208, 209syl3anc 1367 . . . . . . . . . . . . . 14 (((𝜑𝑗𝑌) ∧ 𝑖𝑋) → (((𝐺𝑗)‘𝑖)( ·𝑠𝐶)𝑖) ∈ (Base‘𝐶))
21115, 20ressbas2 16555 . . . . . . . . . . . . . . . . 17 (𝑈 ⊆ (Base‘𝐸) → 𝑈 = (Base‘𝐹))
21288, 211syl 17 . . . . . . . . . . . . . . . 16 (𝜑𝑈 = (Base‘𝐹))
21331, 34srabase 19950 . . . . . . . . . . . . . . . 16 (𝜑 → (Base‘𝐹) = (Base‘𝐶))
214212, 213eqtrd 2856 . . . . . . . . . . . . . . 15 (𝜑𝑈 = (Base‘𝐶))
215214ad2antrr 724 . . . . . . . . . . . . . 14 (((𝜑𝑗𝑌) ∧ 𝑖𝑋) → 𝑈 = (Base‘𝐶))
216210, 215eleqtrrd 2916 . . . . . . . . . . . . 13 (((𝜑𝑗𝑌) ∧ 𝑖𝑋) → (((𝐺𝑗)‘𝑖)( ·𝑠𝐶)𝑖) ∈ 𝑈)
217216fmpttd 6879 . . . . . . . . . . . 12 ((𝜑𝑗𝑌) → (𝑖𝑋 ↦ (((𝐺𝑗)‘𝑖)( ·𝑠𝐶)𝑖)):𝑋𝑈)
218200, 204, 217, 15gsumsubm 17999 . . . . . . . . . . 11 ((𝜑𝑗𝑌) → (𝐸 Σg (𝑖𝑋 ↦ (((𝐺𝑗)‘𝑖)( ·𝑠𝐶)𝑖))) = (𝐹 Σg (𝑖𝑋 ↦ (((𝐺𝑗)‘𝑖)( ·𝑠𝐶)𝑖))))
219 eqid 2821 . . . . . . . . . . . . . . . . . 18 (.r𝐸) = (.r𝐸)
22015, 219ressmulr 16625 . . . . . . . . . . . . . . . . 17 (𝑈 ∈ (SubRing‘𝐸) → (.r𝐸) = (.r𝐹))
22113, 220syl 17 . . . . . . . . . . . . . . . 16 (𝜑 → (.r𝐸) = (.r𝐹))
22231, 34sravsca 19954 . . . . . . . . . . . . . . . 16 (𝜑 → (.r𝐹) = ( ·𝑠𝐶))
223221, 222eqtr2d 2857 . . . . . . . . . . . . . . 15 (𝜑 → ( ·𝑠𝐶) = (.r𝐸))
224223ad2antrr 724 . . . . . . . . . . . . . 14 (((𝜑𝑗𝑌) ∧ 𝑖𝑋) → ( ·𝑠𝐶) = (.r𝐸))
225224oveqd 7173 . . . . . . . . . . . . 13 (((𝜑𝑗𝑌) ∧ 𝑖𝑋) → (((𝐺𝑗)‘𝑖)( ·𝑠𝐶)𝑖) = (((𝐺𝑗)‘𝑖)(.r𝐸)𝑖))
226225mpteq2dva 5161 . . . . . . . . . . . 12 ((𝜑𝑗𝑌) → (𝑖𝑋 ↦ (((𝐺𝑗)‘𝑖)( ·𝑠𝐶)𝑖)) = (𝑖𝑋 ↦ (((𝐺𝑗)‘𝑖)(.r𝐸)𝑖)))
227226oveq2d 7172 . . . . . . . . . . 11 ((𝜑𝑗𝑌) → (𝐸 Σg (𝑖𝑋 ↦ (((𝐺𝑗)‘𝑖)( ·𝑠𝐶)𝑖))) = (𝐸 Σg (𝑖𝑋 ↦ (((𝐺𝑗)‘𝑖)(.r𝐸)𝑖))))
22830, 92, 14, 109, 108, 47drgextgsum 30997 . . . . . . . . . . . 12 (𝜑 → (𝐹 Σg (𝑖𝑋 ↦ (((𝐺𝑗)‘𝑖)( ·𝑠𝐶)𝑖))) = (𝐶 Σg (𝑖𝑋 ↦ (((𝐺𝑗)‘𝑖)( ·𝑠𝐶)𝑖))))
229228adantr 483 . . . . . . . . . . 11 ((𝜑𝑗𝑌) → (𝐹 Σg (𝑖𝑋 ↦ (((𝐺𝑗)‘𝑖)( ·𝑠𝐶)𝑖))) = (𝐶 Σg (𝑖𝑋 ↦ (((𝐺𝑗)‘𝑖)( ·𝑠𝐶)𝑖))))
230218, 227, 2293eqtr3d 2864 . . . . . . . . . 10 ((𝜑𝑗𝑌) → (𝐸 Σg (𝑖𝑋 ↦ (((𝐺𝑗)‘𝑖)(.r𝐸)𝑖))) = (𝐶 Σg (𝑖𝑋 ↦ (((𝐺𝑗)‘𝑖)( ·𝑠𝐶)𝑖))))
231230oveq1d 7171 . . . . . . . . 9 ((𝜑𝑗𝑌) → ((𝐸 Σg (𝑖𝑋 ↦ (((𝐺𝑗)‘𝑖)(.r𝐸)𝑖)))(.r𝐸)𝑗) = ((𝐶 Σg (𝑖𝑋 ↦ (((𝐺𝑗)‘𝑖)( ·𝑠𝐶)𝑖)))(.r𝐸)𝑗))
23269ad2antrr 724 . . . . . . . . . . . . 13 (((𝜑𝑗𝑌) ∧ 𝑖𝑋) → 𝐸 ∈ Ring)
233180ad2antrr 724 . . . . . . . . . . . . . 14 (((𝜑𝑗𝑌) ∧ 𝑖𝑋) → (Base‘(Scalar‘𝐶)) ⊆ (Base‘𝐸))
234233, 206sseldd 3968 . . . . . . . . . . . . 13 (((𝜑𝑗𝑌) ∧ 𝑖𝑋) → ((𝐺𝑗)‘𝑖) ∈ (Base‘𝐸))
235214, 88eqsstrrd 4006 . . . . . . . . . . . . . . . 16 (𝜑 → (Base‘𝐶) ⊆ (Base‘𝐸))
236118, 235sstrd 3977 . . . . . . . . . . . . . . 15 (𝜑𝑋 ⊆ (Base‘𝐸))
237236ad2antrr 724 . . . . . . . . . . . . . 14 (((𝜑𝑗𝑌) ∧ 𝑖𝑋) → 𝑋 ⊆ (Base‘𝐸))
238237, 61sseldd 3968 . . . . . . . . . . . . 13 (((𝜑𝑗𝑌) ∧ 𝑖𝑋) → 𝑖 ∈ (Base‘𝐸))
239 eqid 2821 . . . . . . . . . . . . . . . . . 18 (Base‘𝐵) = (Base‘𝐵)
240 eqid 2821 . . . . . . . . . . . . . . . . . 18 (LBasis‘𝐵) = (LBasis‘𝐵)
241239, 240lbsss 19849 . . . . . . . . . . . . . . . . 17 (𝑌 ∈ (LBasis‘𝐵) → 𝑌 ⊆ (Base‘𝐵))
24246, 241syl 17 . . . . . . . . . . . . . . . 16 (𝜑𝑌 ⊆ (Base‘𝐵))
24386, 88srabase 19950 . . . . . . . . . . . . . . . 16 (𝜑 → (Base‘𝐸) = (Base‘𝐵))
244242, 243sseqtrrd 4008 . . . . . . . . . . . . . . 15 (𝜑𝑌 ⊆ (Base‘𝐸))
245244ad2antrr 724 . . . . . . . . . . . . . 14 (((𝜑𝑗𝑌) ∧ 𝑖𝑋) → 𝑌 ⊆ (Base‘𝐸))
246 simplr 767 . . . . . . . . . . . . . 14 (((𝜑𝑗𝑌) ∧ 𝑖𝑋) → 𝑗𝑌)
247245, 246sseldd 3968 . . . . . . . . . . . . 13 (((𝜑𝑗𝑌) ∧ 𝑖𝑋) → 𝑗 ∈ (Base‘𝐸))
24820, 219ringass 19314 . . . . . . . . . . . . 13 ((𝐸 ∈ Ring ∧ (((𝐺𝑗)‘𝑖) ∈ (Base‘𝐸) ∧ 𝑖 ∈ (Base‘𝐸) ∧ 𝑗 ∈ (Base‘𝐸))) → ((((𝐺𝑗)‘𝑖)(.r𝐸)𝑖)(.r𝐸)𝑗) = (((𝐺𝑗)‘𝑖)(.r𝐸)(𝑖(.r𝐸)𝑗)))
249232, 234, 238, 247, 248syl13anc 1368 . . . . . . . . . . . 12 (((𝜑𝑗𝑌) ∧ 𝑖𝑋) → ((((𝐺𝑗)‘𝑖)(.r𝐸)𝑖)(.r𝐸)𝑗) = (((𝐺𝑗)‘𝑖)(.r𝐸)(𝑖(.r𝐸)𝑗)))
250249mpteq2dva 5161 . . . . . . . . . . 11 ((𝜑𝑗𝑌) → (𝑖𝑋 ↦ ((((𝐺𝑗)‘𝑖)(.r𝐸)𝑖)(.r𝐸)𝑗)) = (𝑖𝑋 ↦ (((𝐺𝑗)‘𝑖)(.r𝐸)(𝑖(.r𝐸)𝑗))))
251250oveq2d 7172 . . . . . . . . . 10 ((𝜑𝑗𝑌) → (𝐸 Σg (𝑖𝑋 ↦ ((((𝐺𝑗)‘𝑖)(.r𝐸)𝑖)(.r𝐸)𝑗))) = (𝐸 Σg (𝑖𝑋 ↦ (((𝐺𝑗)‘𝑖)(.r𝐸)(𝑖(.r𝐸)𝑗)))))
252 eqid 2821 . . . . . . . . . . 11 (+g𝐸) = (+g𝐸)
25369adantr 483 . . . . . . . . . . 11 ((𝜑𝑗𝑌) → 𝐸 ∈ Ring)
254242adantr 483 . . . . . . . . . . . . 13 ((𝜑𝑗𝑌) → 𝑌 ⊆ (Base‘𝐵))
255243adantr 483 . . . . . . . . . . . . 13 ((𝜑𝑗𝑌) → (Base‘𝐸) = (Base‘𝐵))
256254, 255sseqtrrd 4008 . . . . . . . . . . . 12 ((𝜑𝑗𝑌) → 𝑌 ⊆ (Base‘𝐸))
257 simpr 487 . . . . . . . . . . . 12 ((𝜑𝑗𝑌) → 𝑗𝑌)
258256, 257sseldd 3968 . . . . . . . . . . 11 ((𝜑𝑗𝑌) → 𝑗 ∈ (Base‘𝐸))
25920, 219ringcl 19311 . . . . . . . . . . . 12 ((𝐸 ∈ Ring ∧ ((𝐺𝑗)‘𝑖) ∈ (Base‘𝐸) ∧ 𝑖 ∈ (Base‘𝐸)) → (((𝐺𝑗)‘𝑖)(.r𝐸)𝑖) ∈ (Base‘𝐸))
260232, 234, 238, 259syl3anc 1367 . . . . . . . . . . 11 (((𝜑𝑗𝑌) ∧ 𝑖𝑋) → (((𝐺𝑗)‘𝑖)(.r𝐸)𝑖) ∈ (Base‘𝐸))
261168breq2d 5078 . . . . . . . . . . . . . 14 (𝜑 → ((𝐺𝑗) finSupp (0g‘(Scalar‘𝐶)) ↔ (𝐺𝑗) finSupp (0g𝐸)))
262261adantr 483 . . . . . . . . . . . . 13 ((𝜑𝑗𝑌) → ((𝐺𝑗) finSupp (0g‘(Scalar‘𝐶)) ↔ (𝐺𝑗) finSupp (0g𝐸)))
26397, 262mpbid 234 . . . . . . . . . . . 12 ((𝜑𝑗𝑌) → (𝐺𝑗) finSupp (0g𝐸))
26420, 253, 200, 238, 182, 263rmfsupp2 30866 . . . . . . . . . . 11 ((𝜑𝑗𝑌) → (𝑖𝑋 ↦ (((𝐺𝑗)‘𝑖)(.r𝐸)𝑖)) finSupp (0g𝐸))
26520, 71, 252, 219, 253, 200, 258, 260, 264gsummulc1 19356 . . . . . . . . . 10 ((𝜑𝑗𝑌) → (𝐸 Σg (𝑖𝑋 ↦ ((((𝐺𝑗)‘𝑖)(.r𝐸)𝑖)(.r𝐸)𝑗))) = ((𝐸 Σg (𝑖𝑋 ↦ (((𝐺𝑗)‘𝑖)(.r𝐸)𝑖)))(.r𝐸)𝑗))
266251, 265eqtr3d 2858 . . . . . . . . 9 ((𝜑𝑗𝑌) → (𝐸 Σg (𝑖𝑋 ↦ (((𝐺𝑗)‘𝑖)(.r𝐸)(𝑖(.r𝐸)𝑗)))) = ((𝐸 Σg (𝑖𝑋 ↦ (((𝐺𝑗)‘𝑖)(.r𝐸)𝑖)))(.r𝐸)𝑗))
26783oveq1d 7171 . . . . . . . . 9 ((𝜑𝑗𝑌) → ((𝐿𝑗)(.r𝐸)𝑗) = ((𝐶 Σg (𝑖𝑋 ↦ (((𝐺𝑗)‘𝑖)( ·𝑠𝐶)𝑖)))(.r𝐸)𝑗))
268231, 266, 2673eqtr4rd 2867 . . . . . . . 8 ((𝜑𝑗𝑌) → ((𝐿𝑗)(.r𝐸)𝑗) = (𝐸 Σg (𝑖𝑋 ↦ (((𝐺𝑗)‘𝑖)(.r𝐸)(𝑖(.r𝐸)𝑗)))))
26986, 88sravsca 19954 . . . . . . . . . 10 (𝜑 → (.r𝐸) = ( ·𝑠𝐵))
270269adantr 483 . . . . . . . . 9 ((𝜑𝑗𝑌) → (.r𝐸) = ( ·𝑠𝐵))
271270oveqd 7173 . . . . . . . 8 ((𝜑𝑗𝑌) → ((𝐿𝑗)(.r𝐸)𝑗) = ((𝐿𝑗)( ·𝑠𝐵)𝑗))
272 fvexd 6685 . . . . . . . . . . . . . 14 ((𝜑𝑗𝑌𝑖𝑋) → ((𝐺𝑗)‘𝑖) ∈ V)
273 ovexd 7191 . . . . . . . . . . . . . 14 ((𝜑𝑗𝑌𝑖𝑋) → (𝑖(.r𝐸)𝑗) ∈ V)
27442a1i 11 . . . . . . . . . . . . . 14 (𝜑𝐻 = (𝑗𝑌, 𝑖𝑋 ↦ ((𝐺𝑗)‘𝑖)))
275 fedgmullem.d . . . . . . . . . . . . . . 15 𝐷 = (𝑗𝑌, 𝑖𝑋 ↦ (𝑖(.r𝐸)𝑗))
276275a1i 11 . . . . . . . . . . . . . 14 (𝜑𝐷 = (𝑗𝑌, 𝑖𝑋 ↦ (𝑖(.r𝐸)𝑗)))
27746, 47, 272, 273, 274, 276offval22 7783 . . . . . . . . . . . . 13 (𝜑 → (𝐻f (.r𝐸)𝐷) = (𝑗𝑌, 𝑖𝑋 ↦ (((𝐺𝑗)‘𝑖)(.r𝐸)(𝑖(.r𝐸)𝑗))))
278277oveqd 7173 . . . . . . . . . . . 12 (𝜑 → (𝑗(𝐻f (.r𝐸)𝐷)𝑖) = (𝑗(𝑗𝑌, 𝑖𝑋 ↦ (((𝐺𝑗)‘𝑖)(.r𝐸)(𝑖(.r𝐸)𝑗)))𝑖))
279278ad2antrr 724 . . . . . . . . . . 11 (((𝜑𝑗𝑌) ∧ 𝑖𝑋) → (𝑗(𝐻f (.r𝐸)𝐷)𝑖) = (𝑗(𝑗𝑌, 𝑖𝑋 ↦ (((𝐺𝑗)‘𝑖)(.r𝐸)(𝑖(.r𝐸)𝑗)))𝑖))
280 ovexd 7191 . . . . . . . . . . . 12 (((𝜑𝑗𝑌) ∧ 𝑖𝑋) → (((𝐺𝑗)‘𝑖)(.r𝐸)(𝑖(.r𝐸)𝑗)) ∈ V)
281 eqid 2821 . . . . . . . . . . . . 13 (𝑗𝑌, 𝑖𝑋 ↦ (((𝐺𝑗)‘𝑖)(.r𝐸)(𝑖(.r𝐸)𝑗))) = (𝑗𝑌, 𝑖𝑋 ↦ (((𝐺𝑗)‘𝑖)(.r𝐸)(𝑖(.r𝐸)𝑗)))
282281ovmpt4g 7297 . . . . . . . . . . . 12 ((𝑗𝑌𝑖𝑋 ∧ (((𝐺𝑗)‘𝑖)(.r𝐸)(𝑖(.r𝐸)𝑗)) ∈ V) → (𝑗(𝑗𝑌, 𝑖𝑋 ↦ (((𝐺𝑗)‘𝑖)(.r𝐸)(𝑖(.r𝐸)𝑗)))𝑖) = (((𝐺𝑗)‘𝑖)(.r𝐸)(𝑖(.r𝐸)𝑗)))
283246, 61, 280, 282syl3anc 1367 . . . . . . . . . . 11 (((𝜑𝑗𝑌) ∧ 𝑖𝑋) → (𝑗(𝑗𝑌, 𝑖𝑋 ↦ (((𝐺𝑗)‘𝑖)(.r𝐸)(𝑖(.r𝐸)𝑗)))𝑖) = (((𝐺𝑗)‘𝑖)(.r𝐸)(𝑖(.r𝐸)𝑗)))
284279, 283eqtr2d 2857 . . . . . . . . . 10 (((𝜑𝑗𝑌) ∧ 𝑖𝑋) → (((𝐺𝑗)‘𝑖)(.r𝐸)(𝑖(.r𝐸)𝑗)) = (𝑗(𝐻f (.r𝐸)𝐷)𝑖))
285284mpteq2dva 5161 . . . . . . . . 9 ((𝜑𝑗𝑌) → (𝑖𝑋 ↦ (((𝐺𝑗)‘𝑖)(.r𝐸)(𝑖(.r𝐸)𝑗))) = (𝑖𝑋 ↦ (𝑗(𝐻f (.r𝐸)𝐷)𝑖)))
286285oveq2d 7172 . . . . . . . 8 ((𝜑𝑗𝑌) → (𝐸 Σg (𝑖𝑋 ↦ (((𝐺𝑗)‘𝑖)(.r𝐸)(𝑖(.r𝐸)𝑗)))) = (𝐸 Σg (𝑖𝑋 ↦ (𝑗(𝐻f (.r𝐸)𝐷)𝑖))))
287268, 271, 2863eqtr3d 2864 . . . . . . 7 ((𝜑𝑗𝑌) → ((𝐿𝑗)( ·𝑠𝐵)𝑗) = (𝐸 Σg (𝑖𝑋 ↦ (𝑗(𝐻f (.r𝐸)𝐷)𝑖))))
288287mpteq2dva 5161 . . . . . 6 (𝜑 → (𝑗𝑌 ↦ ((𝐿𝑗)( ·𝑠𝐵)𝑗)) = (𝑗𝑌 ↦ (𝐸 Σg (𝑖𝑋 ↦ (𝑗(𝐻f (.r𝐸)𝐷)𝑖)))))
289288oveq2d 7172 . . . . 5 (𝜑 → (𝐸 Σg (𝑗𝑌 ↦ ((𝐿𝑗)( ·𝑠𝐵)𝑗))) = (𝐸 Σg (𝑗𝑌 ↦ (𝐸 Σg (𝑖𝑋 ↦ (𝑗(𝐻f (.r𝐸)𝐷)𝑖))))))
290 ringcmn 19331 . . . . . . 7 (𝐸 ∈ Ring → 𝐸 ∈ CMnd)
29169, 290syl 17 . . . . . 6 (𝜑𝐸 ∈ CMnd)
29269adantr 483 . . . . . . . 8 ((𝜑 ∧ (𝑙 ∈ (Base‘(Scalar‘𝐴)) ∧ 𝑘 ∈ (Base‘𝐴))) → 𝐸 ∈ Ring)
29338, 180eqsstrd 4005 . . . . . . . . . 10 (𝜑 → (Base‘(Scalar‘𝐴)) ⊆ (Base‘𝐸))
294293adantr 483 . . . . . . . . 9 ((𝜑 ∧ (𝑙 ∈ (Base‘(Scalar‘𝐴)) ∧ 𝑘 ∈ (Base‘𝐴))) → (Base‘(Scalar‘𝐴)) ⊆ (Base‘𝐸))
295 simprl 769 . . . . . . . . 9 ((𝜑 ∧ (𝑙 ∈ (Base‘(Scalar‘𝐴)) ∧ 𝑘 ∈ (Base‘𝐴))) → 𝑙 ∈ (Base‘(Scalar‘𝐴)))
296294, 295sseldd 3968 . . . . . . . 8 ((𝜑 ∧ (𝑙 ∈ (Base‘(Scalar‘𝐴)) ∧ 𝑘 ∈ (Base‘𝐴))) → 𝑙 ∈ (Base‘𝐸))
297 simprr 771 . . . . . . . . 9 ((𝜑 ∧ (𝑙 ∈ (Base‘(Scalar‘𝐴)) ∧ 𝑘 ∈ (Base‘𝐴))) → 𝑘 ∈ (Base‘𝐴))
29812, 22srabase 19950 . . . . . . . . . 10 (𝜑 → (Base‘𝐸) = (Base‘𝐴))
299298adantr 483 . . . . . . . . 9 ((𝜑 ∧ (𝑙 ∈ (Base‘(Scalar‘𝐴)) ∧ 𝑘 ∈ (Base‘𝐴))) → (Base‘𝐸) = (Base‘𝐴))
300297, 299eleqtrrd 2916 . . . . . . . 8 ((𝜑 ∧ (𝑙 ∈ (Base‘(Scalar‘𝐴)) ∧ 𝑘 ∈ (Base‘𝐴))) → 𝑘 ∈ (Base‘𝐸))
30120, 219ringcl 19311 . . . . . . . 8 ((𝐸 ∈ Ring ∧ 𝑙 ∈ (Base‘𝐸) ∧ 𝑘 ∈ (Base‘𝐸)) → (𝑙(.r𝐸)𝑘) ∈ (Base‘𝐸))
302292, 296, 300, 301syl3anc 1367 . . . . . . 7 ((𝜑 ∧ (𝑙 ∈ (Base‘(Scalar‘𝐴)) ∧ 𝑘 ∈ (Base‘𝐴))) → (𝑙(.r𝐸)𝑘) ∈ (Base‘𝐸))
30320, 219ringcl 19311 . . . . . . . . . . . 12 ((𝐸 ∈ Ring ∧ 𝑖 ∈ (Base‘𝐸) ∧ 𝑗 ∈ (Base‘𝐸)) → (𝑖(.r𝐸)𝑗) ∈ (Base‘𝐸))
304232, 238, 247, 303syl3anc 1367 . . . . . . . . . . 11 (((𝜑𝑗𝑌) ∧ 𝑖𝑋) → (𝑖(.r𝐸)𝑗) ∈ (Base‘𝐸))
305298ad2antrr 724 . . . . . . . . . . 11 (((𝜑𝑗𝑌) ∧ 𝑖𝑋) → (Base‘𝐸) = (Base‘𝐴))
306304, 305eleqtrd 2915 . . . . . . . . . 10 (((𝜑𝑗𝑌) ∧ 𝑖𝑋) → (𝑖(.r𝐸)𝑗) ∈ (Base‘𝐴))
307306anasss 469 . . . . . . . . 9 ((𝜑 ∧ (𝑗𝑌𝑖𝑋)) → (𝑖(.r𝐸)𝑗) ∈ (Base‘𝐴))
308307ralrimivva 3191 . . . . . . . 8 (𝜑 → ∀𝑗𝑌𝑖𝑋 (𝑖(.r𝐸)𝑗) ∈ (Base‘𝐴))
309275fmpo 7766 . . . . . . . 8 (∀𝑗𝑌𝑖𝑋 (𝑖(.r𝐸)𝑗) ∈ (Base‘𝐴) ↔ 𝐷:(𝑌 × 𝑋)⟶(Base‘𝐴))
310308, 309sylib 220 . . . . . . 7 (𝜑𝐷:(𝑌 × 𝑋)⟶(Base‘𝐴))
311 inidm 4195 . . . . . . 7 ((𝑌 × 𝑋) ∩ (𝑌 × 𝑋)) = (𝑌 × 𝑋)
312302, 65, 310, 48, 48, 311off 7424 . . . . . 6 (𝜑 → (𝐻f (.r𝐸)𝐷):(𝑌 × 𝑋)⟶(Base‘𝐸))
31369adantr 483 . . . . . . . 8 ((𝜑𝑢 ∈ (Base‘𝐴)) → 𝐸 ∈ Ring)
314 simpr 487 . . . . . . . . 9 ((𝜑𝑢 ∈ (Base‘𝐴)) → 𝑢 ∈ (Base‘𝐴))
315298adantr 483 . . . . . . . . 9 ((𝜑𝑢 ∈ (Base‘𝐴)) → (Base‘𝐸) = (Base‘𝐴))
316314, 315eleqtrrd 2916 . . . . . . . 8 ((𝜑𝑢 ∈ (Base‘𝐴)) → 𝑢 ∈ (Base‘𝐸))
31720, 219, 71ringlz 19337 . . . . . . . 8 ((𝐸 ∈ Ring ∧ 𝑢 ∈ (Base‘𝐸)) → ((0g𝐸)(.r𝐸)𝑢) = (0g𝐸))
318313, 316, 317syl2anc 586 . . . . . . 7 ((𝜑𝑢 ∈ (Base‘𝐴)) → ((0g𝐸)(.r𝐸)𝑢) = (0g𝐸))
31948, 73, 73, 65, 310, 194, 318offinsupp1 30463 . . . . . 6 (𝜑 → (𝐻f (.r𝐸)𝐷) finSupp (0g𝐸))
32020, 71, 291, 46, 47, 312, 319gsumxp 19096 . . . . 5 (𝜑 → (𝐸 Σg (𝐻f (.r𝐸)𝐷)) = (𝐸 Σg (𝑗𝑌 ↦ (𝐸 Σg (𝑖𝑋 ↦ (𝑗(𝐻f (.r𝐸)𝐷)𝑖))))))
32112, 22sravsca 19954 . . . . . . . 8 (𝜑 → (.r𝐸) = ( ·𝑠𝐴))
322 ofeq 7411 . . . . . . . 8 ((.r𝐸) = ( ·𝑠𝐴) → ∘f (.r𝐸) = ∘f ( ·𝑠𝐴))
323321, 322syl 17 . . . . . . 7 (𝜑 → ∘f (.r𝐸) = ∘f ( ·𝑠𝐴))
324323oveqd 7173 . . . . . 6 (𝜑 → (𝐻f (.r𝐸)𝐷) = (𝐻f ( ·𝑠𝐴)𝐷))
325324oveq2d 7172 . . . . 5 (𝜑 → (𝐸 Σg (𝐻f (.r𝐸)𝐷)) = (𝐸 Σg (𝐻f ( ·𝑠𝐴)𝐷)))
326289, 320, 3253eqtr2rd 2863 . . . 4 (𝜑 → (𝐸 Σg (𝐻f ( ·𝑠𝐴)𝐷)) = (𝐸 Σg (𝑗𝑌 ↦ ((𝐿𝑗)( ·𝑠𝐵)𝑗))))
327 ovexd 7191 . . . . 5 (𝜑 → (𝐻f ( ·𝑠𝐴)𝐷) ∈ V)
328 fedgmullem1.a . . . . . 6 (𝜑𝑍 ∈ (Base‘𝐴))
329328elfvexd 6704 . . . . 5 (𝜑𝐴 ∈ V)
33011, 327, 67, 329, 22gsumsra 30685 . . . 4 (𝜑 → (𝐸 Σg (𝐻f ( ·𝑠𝐴)𝐷)) = (𝐴 Σg (𝐻f ( ·𝑠𝐴)𝐷)))
331326, 330eqtr3d 2858 . . 3 (𝜑 → (𝐸 Σg (𝑗𝑌 ↦ ((𝐿𝑗)( ·𝑠𝐵)𝑗))) = (𝐴 Σg (𝐻f ( ·𝑠𝐴)𝐷)))
332198, 199, 3313eqtr2d 2862 . 2 (𝜑𝑍 = (𝐴 Σg (𝐻f ( ·𝑠𝐴)𝐷)))
333197, 332jca 514 1 (𝜑 → (𝐻 finSupp (0g‘(Scalar‘𝐴)) ∧ 𝑍 = (𝐴 Σg (𝐻f ( ·𝑠𝐴)𝐷))))
Colors of variables: wff setvar class
Syntax hints:  wi 4  wb 208  wa 398  w3a 1083   = wceq 1537  wcel 2114  wral 3138  Vcvv 3494  cdif 3933  wss 3936  {csn 4567   ciun 4919   class class class wbr 5066  cmpt 5146   × cxp 5553  Fun wfun 6349  wf 6351  cfv 6355  (class class class)co 7156  cmpo 7158  f cof 7407   supp csupp 7830  m cmap 8406  Fincfn 8509   finSupp cfsupp 8833  Basecbs 16483  s cress 16484  +gcplusg 16565  .rcmulr 16566  Scalarcsca 16568   ·𝑠 cvsca 16569  0gc0g 16713   Σg cgsu 16714  SubMndcsubmnd 17955  Grpcgrp 18103  SubGrpcsubg 18273  CMndccmn 18906  Ringcrg 19297  DivRingcdr 19502  SubRingcsubrg 19531  LModclmod 19634  LSpanclspn 19743  LBasisclbs 19846  LVecclvec 19874  subringAlg csra 19940  LIndSclinds 20949
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1796  ax-4 1810  ax-5 1911  ax-6 1970  ax-7 2015  ax-8 2116  ax-9 2124  ax-10 2145  ax-11 2161  ax-12 2177  ax-ext 2793  ax-rep 5190  ax-sep 5203  ax-nul 5210  ax-pow 5266  ax-pr 5330  ax-un 7461  ax-cnex 10593  ax-resscn 10594  ax-1cn 10595  ax-icn 10596  ax-addcl 10597  ax-addrcl 10598  ax-mulcl 10599  ax-mulrcl 10600  ax-mulcom 10601  ax-addass 10602  ax-mulass 10603  ax-distr 10604  ax-i2m1 10605  ax-1ne0 10606  ax-1rid 10607  ax-rnegex 10608  ax-rrecex 10609  ax-cnre 10610  ax-pre-lttri 10611  ax-pre-lttrn 10612  ax-pre-ltadd 10613  ax-pre-mulgt0 10614
This theorem depends on definitions:  df-bi 209  df-an 399  df-or 844  df-3or 1084  df-3an 1085  df-tru 1540  df-fal 1550  df-ex 1781  df-nf 1785  df-sb 2070  df-mo 2622  df-eu 2654  df-clab 2800  df-cleq 2814  df-clel 2893  df-nfc 2963  df-ne 3017  df-nel 3124  df-ral 3143  df-rex 3144  df-reu 3145  df-rmo 3146  df-rab 3147  df-v 3496  df-sbc 3773  df-csb 3884  df-dif 3939  df-un 3941  df-in 3943  df-ss 3952  df-pss 3954  df-nul 4292  df-if 4468  df-pw 4541  df-sn 4568  df-pr 4570  df-tp 4572  df-op 4574  df-uni 4839  df-int 4877  df-iun 4921  df-iin 4922  df-br 5067  df-opab 5129  df-mpt 5147  df-tr 5173  df-id 5460  df-eprel 5465  df-po 5474  df-so 5475  df-fr 5514  df-se 5515  df-we 5516  df-xp 5561  df-rel 5562  df-cnv 5563  df-co 5564  df-dm 5565  df-rn 5566  df-res 5567  df-ima 5568  df-pred 6148  df-ord 6194  df-on 6195  df-lim 6196  df-suc 6197  df-iota 6314  df-fun 6357  df-fn 6358  df-f 6359  df-f1 6360  df-fo 6361  df-f1o 6362  df-fv 6363  df-isom 6364  df-riota 7114  df-ov 7159  df-oprab 7160  df-mpo 7161  df-of 7409  df-om 7581  df-1st 7689  df-2nd 7690  df-supp 7831  df-wrecs 7947  df-recs 8008  df-rdg 8046  df-1o 8102  df-oadd 8106  df-er 8289  df-map 8408  df-ixp 8462  df-en 8510  df-dom 8511  df-sdom 8512  df-fin 8513  df-fsupp 8834  df-sup 8906  df-oi 8974  df-card 9368  df-pnf 10677  df-mnf 10678  df-xr 10679  df-ltxr 10680  df-le 10681  df-sub 10872  df-neg 10873  df-nn 11639  df-2 11701  df-3 11702  df-4 11703  df-5 11704  df-6 11705  df-7 11706  df-8 11707  df-9 11708  df-n0 11899  df-z 11983  df-dec 12100  df-uz 12245  df-fz 12894  df-fzo 13035  df-seq 13371  df-hash 13692  df-struct 16485  df-ndx 16486  df-slot 16487  df-base 16489  df-sets 16490  df-ress 16491  df-plusg 16578  df-mulr 16579  df-sca 16581  df-vsca 16582  df-ip 16583  df-tset 16584  df-ple 16585  df-ds 16587  df-hom 16589  df-cco 16590  df-0g 16715  df-gsum 16716  df-prds 16721  df-pws 16723  df-mre 16857  df-mrc 16858  df-acs 16860  df-mgm 17852  df-sgrp 17901  df-mnd 17912  df-mhm 17956  df-submnd 17957  df-grp 18106  df-minusg 18107  df-sbg 18108  df-mulg 18225  df-subg 18276  df-ghm 18356  df-cntz 18447  df-cmn 18908  df-abl 18909  df-mgp 19240  df-ur 19252  df-ring 19299  df-drng 19504  df-subrg 19533  df-lmod 19636  df-lss 19704  df-lsp 19744  df-lmhm 19794  df-lbs 19847  df-lvec 19875  df-sra 19944  df-rgmod 19945  df-nzr 20031  df-dsmm 20876  df-frlm 20891  df-uvc 20927  df-lindf 20950  df-linds 20951
This theorem is referenced by:  fedgmul  31027
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