| Step | Hyp | Ref
| Expression |
| 1 | | mplasclco.o |
. . . . 5
⊢ 𝑂 = (𝐽 mPoly 𝑅) |
| 2 | | eqid 2736 |
. . . . 5
⊢
(Base‘𝑂) =
(Base‘𝑂) |
| 3 | | mplasclco.s |
. . . . 5
⊢ 𝑆 = (Base‘𝑅) |
| 4 | | mplasclco.a |
. . . . 5
⊢ 𝐴 = (algSc‘𝑂) |
| 5 | | mplasclco.i |
. . . . . 6
⊢ (𝜑 → 𝐼 ∈ 𝑉) |
| 6 | | mplasclco.j |
. . . . . 6
⊢ (𝜑 → 𝐽 ⊆ 𝐼) |
| 7 | 5, 6 | ssexd 5255 |
. . . . 5
⊢ (𝜑 → 𝐽 ∈ V) |
| 8 | | mplasclco.r |
. . . . . 6
⊢ (𝜑 → 𝑅 ∈ CRing) |
| 9 | 8 | crngringd 20221 |
. . . . 5
⊢ (𝜑 → 𝑅 ∈ Ring) |
| 10 | 1, 2, 3, 4, 7, 9 | mplasclf 22044 |
. . . 4
⊢ (𝜑 → 𝐴:𝑆⟶(Base‘𝑂)) |
| 11 | | mplasclco.p |
. . . . . 6
⊢ 𝑃 = (𝐼 mPoly 𝑅) |
| 12 | | mplasclco.d |
. . . . . 6
⊢ 𝐷 = {ℎ ∈ (ℕ0
↑m 𝐼)
∣ (◡ℎ “ ℕ) ∈ Fin} |
| 13 | | eqid 2736 |
. . . . . 6
⊢
(0g‘𝑅) = (0g‘𝑅) |
| 14 | | mplasclco.b |
. . . . . 6
⊢ 𝐵 = (algSc‘𝑃) |
| 15 | | mplasclco.x |
. . . . . 6
⊢ (𝜑 → 𝑋 ∈ 𝑆) |
| 16 | 11, 12, 13, 3, 14, 5, 9, 15 | mplascl 22043 |
. . . . 5
⊢ (𝜑 → (𝐵‘𝑋) = (𝑛 ∈ 𝐷 ↦ if(𝑛 = (𝐼 × {0}), 𝑋, (0g‘𝑅)))) |
| 17 | 8 | crnggrpd 20222 |
. . . . . . . 8
⊢ (𝜑 → 𝑅 ∈ Grp) |
| 18 | 3, 13, 17 | grpidcld 33122 |
. . . . . . 7
⊢ (𝜑 → (0g‘𝑅) ∈ 𝑆) |
| 19 | 15, 18 | ifcld 4504 |
. . . . . 6
⊢ (𝜑 → if(𝑛 = (𝐼 × {0}), 𝑋, (0g‘𝑅)) ∈ 𝑆) |
| 20 | 19 | adantr 481 |
. . . . 5
⊢ ((𝜑 ∧ 𝑛 ∈ 𝐷) → if(𝑛 = (𝐼 × {0}), 𝑋, (0g‘𝑅)) ∈ 𝑆) |
| 21 | 16, 20 | fmpt3d 7060 |
. . . 4
⊢ (𝜑 → (𝐵‘𝑋):𝐷⟶𝑆) |
| 22 | 10, 21 | fcod 6683 |
. . 3
⊢ (𝜑 → (𝐴 ∘ (𝐵‘𝑋)):𝐷⟶(Base‘𝑂)) |
| 23 | 22 | ffnd 6659 |
. 2
⊢ (𝜑 → (𝐴 ∘ (𝐵‘𝑋)) Fn 𝐷) |
| 24 | | mplasclco.q |
. . . . 5
⊢ 𝑄 = (𝐼 mPoly 𝑂) |
| 25 | | eqid 2736 |
. . . . 5
⊢
(0g‘𝑂) = (0g‘𝑂) |
| 26 | | mplasclco.c |
. . . . 5
⊢ 𝐶 = (algSc‘𝑄) |
| 27 | 1, 7, 9 | mplringd 22000 |
. . . . 5
⊢ (𝜑 → 𝑂 ∈ Ring) |
| 28 | | eqid 2736 |
. . . . . 6
⊢
(Scalar‘𝑂) =
(Scalar‘𝑂) |
| 29 | | eqid 2736 |
. . . . . 6
⊢
(Base‘(Scalar‘𝑂)) = (Base‘(Scalar‘𝑂)) |
| 30 | 1 | mplassa 21999 |
. . . . . . 7
⊢ ((𝐽 ∈ V ∧ 𝑅 ∈ CRing) → 𝑂 ∈ AssAlg) |
| 31 | 7, 8, 30 | syl2anc 586 |
. . . . . 6
⊢ (𝜑 → 𝑂 ∈ AssAlg) |
| 32 | 1, 7, 8 | mplsca 21990 |
. . . . . . . . 9
⊢ (𝜑 → 𝑅 = (Scalar‘𝑂)) |
| 33 | 32 | fveq2d 6834 |
. . . . . . . 8
⊢ (𝜑 → (Base‘𝑅) =
(Base‘(Scalar‘𝑂))) |
| 34 | 3, 33 | eqtrid 2783 |
. . . . . . 7
⊢ (𝜑 → 𝑆 = (Base‘(Scalar‘𝑂))) |
| 35 | 15, 34 | eleqtrd 2838 |
. . . . . 6
⊢ (𝜑 → 𝑋 ∈ (Base‘(Scalar‘𝑂))) |
| 36 | 4, 28, 29, 31, 35 | asclelbas 21861 |
. . . . 5
⊢ (𝜑 → (𝐴‘𝑋) ∈ (Base‘𝑂)) |
| 37 | 24, 12, 25, 2, 26, 5, 27, 36 | mplascl 22043 |
. . . 4
⊢ (𝜑 → (𝐶‘(𝐴‘𝑋)) = (𝑛 ∈ 𝐷 ↦ if(𝑛 = (𝐼 × {0}), (𝐴‘𝑋), (0g‘𝑂)))) |
| 38 | 27 | ringgrpd 20217 |
. . . . . . 7
⊢ (𝜑 → 𝑂 ∈ Grp) |
| 39 | 2, 25, 38 | grpidcld 33122 |
. . . . . 6
⊢ (𝜑 → (0g‘𝑂) ∈ (Base‘𝑂)) |
| 40 | 36, 39 | ifcld 4504 |
. . . . 5
⊢ (𝜑 → if(𝑛 = (𝐼 × {0}), (𝐴‘𝑋), (0g‘𝑂)) ∈ (Base‘𝑂)) |
| 41 | 40 | adantr 481 |
. . . 4
⊢ ((𝜑 ∧ 𝑛 ∈ 𝐷) → if(𝑛 = (𝐼 × {0}), (𝐴‘𝑋), (0g‘𝑂)) ∈ (Base‘𝑂)) |
| 42 | 37, 41 | fmpt3d 7060 |
. . 3
⊢ (𝜑 → (𝐶‘(𝐴‘𝑋)):𝐷⟶(Base‘𝑂)) |
| 43 | 42 | ffnd 6659 |
. 2
⊢ (𝜑 → (𝐶‘(𝐴‘𝑋)) Fn 𝐷) |
| 44 | | eqeq2 2748 |
. . . . 5
⊢ ((𝑚 ∈ 𝐸 ↦ if(𝑚 = (𝐽 × {0}), 𝑋, (0g‘𝑅))) = if(𝑛 = (𝐼 × {0}), (𝑚 ∈ 𝐸 ↦ if(𝑚 = (𝐽 × {0}), 𝑋, (0g‘𝑅))), (𝐸 × {(0g‘𝑅)})) → ((𝑚 ∈ 𝐸 ↦ if(𝑛 = (𝐼 × {0}), if(𝑚 = (𝐽 × {0}), 𝑋, (0g‘𝑅)), (0g‘𝑅))) = (𝑚 ∈ 𝐸 ↦ if(𝑚 = (𝐽 × {0}), 𝑋, (0g‘𝑅))) ↔ (𝑚 ∈ 𝐸 ↦ if(𝑛 = (𝐼 × {0}), if(𝑚 = (𝐽 × {0}), 𝑋, (0g‘𝑅)), (0g‘𝑅))) = if(𝑛 = (𝐼 × {0}), (𝑚 ∈ 𝐸 ↦ if(𝑚 = (𝐽 × {0}), 𝑋, (0g‘𝑅))), (𝐸 × {(0g‘𝑅)})))) |
| 45 | | eqeq2 2748 |
. . . . 5
⊢ ((𝐸 ×
{(0g‘𝑅)})
= if(𝑛 = (𝐼 × {0}), (𝑚 ∈ 𝐸 ↦ if(𝑚 = (𝐽 × {0}), 𝑋, (0g‘𝑅))), (𝐸 × {(0g‘𝑅)})) → ((𝑚 ∈ 𝐸 ↦ if(𝑛 = (𝐼 × {0}), if(𝑚 = (𝐽 × {0}), 𝑋, (0g‘𝑅)), (0g‘𝑅))) = (𝐸 × {(0g‘𝑅)}) ↔ (𝑚 ∈ 𝐸 ↦ if(𝑛 = (𝐼 × {0}), if(𝑚 = (𝐽 × {0}), 𝑋, (0g‘𝑅)), (0g‘𝑅))) = if(𝑛 = (𝐼 × {0}), (𝑚 ∈ 𝐸 ↦ if(𝑚 = (𝐽 × {0}), 𝑋, (0g‘𝑅))), (𝐸 × {(0g‘𝑅)})))) |
| 46 | | simpr 485 |
. . . . . . 7
⊢ (((𝜑 ∧ 𝑛 ∈ 𝐷) ∧ 𝑛 = (𝐼 × {0})) → 𝑛 = (𝐼 × {0})) |
| 47 | 46 | iftrued 4465 |
. . . . . 6
⊢ (((𝜑 ∧ 𝑛 ∈ 𝐷) ∧ 𝑛 = (𝐼 × {0})) → if(𝑛 = (𝐼 × {0}), if(𝑚 = (𝐽 × {0}), 𝑋, (0g‘𝑅)), (0g‘𝑅)) = if(𝑚 = (𝐽 × {0}), 𝑋, (0g‘𝑅))) |
| 48 | 47 | mpteq2dv 5169 |
. . . . 5
⊢ (((𝜑 ∧ 𝑛 ∈ 𝐷) ∧ 𝑛 = (𝐼 × {0})) → (𝑚 ∈ 𝐸 ↦ if(𝑛 = (𝐼 × {0}), if(𝑚 = (𝐽 × {0}), 𝑋, (0g‘𝑅)), (0g‘𝑅))) = (𝑚 ∈ 𝐸 ↦ if(𝑚 = (𝐽 × {0}), 𝑋, (0g‘𝑅)))) |
| 49 | | simpr 485 |
. . . . . . . 8
⊢ (((𝜑 ∧ 𝑛 ∈ 𝐷) ∧ ¬ 𝑛 = (𝐼 × {0})) → ¬ 𝑛 = (𝐼 × {0})) |
| 50 | 49 | iffalsed 4468 |
. . . . . . 7
⊢ (((𝜑 ∧ 𝑛 ∈ 𝐷) ∧ ¬ 𝑛 = (𝐼 × {0})) → if(𝑛 = (𝐼 × {0}), if(𝑚 = (𝐽 × {0}), 𝑋, (0g‘𝑅)), (0g‘𝑅)) = (0g‘𝑅)) |
| 51 | 50 | mpteq2dv 5169 |
. . . . . 6
⊢ (((𝜑 ∧ 𝑛 ∈ 𝐷) ∧ ¬ 𝑛 = (𝐼 × {0})) → (𝑚 ∈ 𝐸 ↦ if(𝑛 = (𝐼 × {0}), if(𝑚 = (𝐽 × {0}), 𝑋, (0g‘𝑅)), (0g‘𝑅))) = (𝑚 ∈ 𝐸 ↦ (0g‘𝑅))) |
| 52 | | fconstmpt 5683 |
. . . . . 6
⊢ (𝐸 ×
{(0g‘𝑅)})
= (𝑚 ∈ 𝐸 ↦
(0g‘𝑅)) |
| 53 | 51, 52 | eqtr4di 2789 |
. . . . 5
⊢ (((𝜑 ∧ 𝑛 ∈ 𝐷) ∧ ¬ 𝑛 = (𝐼 × {0})) → (𝑚 ∈ 𝐸 ↦ if(𝑛 = (𝐼 × {0}), if(𝑚 = (𝐽 × {0}), 𝑋, (0g‘𝑅)), (0g‘𝑅))) = (𝐸 × {(0g‘𝑅)})) |
| 54 | 44, 45, 48, 53 | ifbothda 4496 |
. . . 4
⊢ ((𝜑 ∧ 𝑛 ∈ 𝐷) → (𝑚 ∈ 𝐸 ↦ if(𝑛 = (𝐼 × {0}), if(𝑚 = (𝐽 × {0}), 𝑋, (0g‘𝑅)), (0g‘𝑅))) = if(𝑛 = (𝐼 × {0}), (𝑚 ∈ 𝐸 ↦ if(𝑚 = (𝐽 × {0}), 𝑋, (0g‘𝑅))), (𝐸 × {(0g‘𝑅)}))) |
| 55 | | mplasclco.e |
. . . . . 6
⊢ 𝐸 = {𝑗 ∈ (ℕ0
↑m 𝐽)
∣ (◡𝑗 “ ℕ) ∈
Fin} |
| 56 | 7 | adantr 481 |
. . . . . 6
⊢ ((𝜑 ∧ 𝑛 ∈ 𝐷) → 𝐽 ∈ V) |
| 57 | 9 | adantr 481 |
. . . . . 6
⊢ ((𝜑 ∧ 𝑛 ∈ 𝐷) → 𝑅 ∈ Ring) |
| 58 | 21 | ffvelcdmda 7028 |
. . . . . 6
⊢ ((𝜑 ∧ 𝑛 ∈ 𝐷) → ((𝐵‘𝑋)‘𝑛) ∈ 𝑆) |
| 59 | 1, 55, 13, 3, 4, 56, 57, 58 | mplascl 22043 |
. . . . 5
⊢ ((𝜑 ∧ 𝑛 ∈ 𝐷) → (𝐴‘((𝐵‘𝑋)‘𝑛)) = (𝑚 ∈ 𝐸 ↦ if(𝑚 = (𝐽 × {0}), ((𝐵‘𝑋)‘𝑛), (0g‘𝑅)))) |
| 60 | 16, 20 | fvmpt2d 6952 |
. . . . . . . . 9
⊢ ((𝜑 ∧ 𝑛 ∈ 𝐷) → ((𝐵‘𝑋)‘𝑛) = if(𝑛 = (𝐼 × {0}), 𝑋, (0g‘𝑅))) |
| 61 | 60 | adantr 481 |
. . . . . . . 8
⊢ (((𝜑 ∧ 𝑛 ∈ 𝐷) ∧ 𝑚 ∈ 𝐸) → ((𝐵‘𝑋)‘𝑛) = if(𝑛 = (𝐼 × {0}), 𝑋, (0g‘𝑅))) |
| 62 | 61 | ifeq1d 4477 |
. . . . . . 7
⊢ (((𝜑 ∧ 𝑛 ∈ 𝐷) ∧ 𝑚 ∈ 𝐸) → if(𝑚 = (𝐽 × {0}), ((𝐵‘𝑋)‘𝑛), (0g‘𝑅)) = if(𝑚 = (𝐽 × {0}), if(𝑛 = (𝐼 × {0}), 𝑋, (0g‘𝑅)), (0g‘𝑅))) |
| 63 | | ififcom 32641 |
. . . . . . 7
⊢ if(𝑚 = (𝐽 × {0}), if(𝑛 = (𝐼 × {0}), 𝑋, (0g‘𝑅)), (0g‘𝑅)) = if(𝑛 = (𝐼 × {0}), if(𝑚 = (𝐽 × {0}), 𝑋, (0g‘𝑅)), (0g‘𝑅)) |
| 64 | 62, 63 | eqtrdi 2787 |
. . . . . 6
⊢ (((𝜑 ∧ 𝑛 ∈ 𝐷) ∧ 𝑚 ∈ 𝐸) → if(𝑚 = (𝐽 × {0}), ((𝐵‘𝑋)‘𝑛), (0g‘𝑅)) = if(𝑛 = (𝐼 × {0}), if(𝑚 = (𝐽 × {0}), 𝑋, (0g‘𝑅)), (0g‘𝑅))) |
| 65 | 64 | mpteq2dva 5168 |
. . . . 5
⊢ ((𝜑 ∧ 𝑛 ∈ 𝐷) → (𝑚 ∈ 𝐸 ↦ if(𝑚 = (𝐽 × {0}), ((𝐵‘𝑋)‘𝑛), (0g‘𝑅))) = (𝑚 ∈ 𝐸 ↦ if(𝑛 = (𝐼 × {0}), if(𝑚 = (𝐽 × {0}), 𝑋, (0g‘𝑅)), (0g‘𝑅)))) |
| 66 | 59, 65 | eqtrd 2771 |
. . . 4
⊢ ((𝜑 ∧ 𝑛 ∈ 𝐷) → (𝐴‘((𝐵‘𝑋)‘𝑛)) = (𝑚 ∈ 𝐸 ↦ if(𝑛 = (𝐼 × {0}), if(𝑚 = (𝐽 × {0}), 𝑋, (0g‘𝑅)), (0g‘𝑅)))) |
| 67 | 1, 55, 13, 3, 4, 7,
9, 15 | mplascl 22043 |
. . . . . 6
⊢ (𝜑 → (𝐴‘𝑋) = (𝑚 ∈ 𝐸 ↦ if(𝑚 = (𝐽 × {0}), 𝑋, (0g‘𝑅)))) |
| 68 | 1, 55, 13, 25, 7, 17 | mpl0 21983 |
. . . . . 6
⊢ (𝜑 → (0g‘𝑂) = (𝐸 × {(0g‘𝑅)})) |
| 69 | 67, 68 | ifeq12d 4479 |
. . . . 5
⊢ (𝜑 → if(𝑛 = (𝐼 × {0}), (𝐴‘𝑋), (0g‘𝑂)) = if(𝑛 = (𝐼 × {0}), (𝑚 ∈ 𝐸 ↦ if(𝑚 = (𝐽 × {0}), 𝑋, (0g‘𝑅))), (𝐸 × {(0g‘𝑅)}))) |
| 70 | 69 | adantr 481 |
. . . 4
⊢ ((𝜑 ∧ 𝑛 ∈ 𝐷) → if(𝑛 = (𝐼 × {0}), (𝐴‘𝑋), (0g‘𝑂)) = if(𝑛 = (𝐼 × {0}), (𝑚 ∈ 𝐸 ↦ if(𝑚 = (𝐽 × {0}), 𝑋, (0g‘𝑅))), (𝐸 × {(0g‘𝑅)}))) |
| 71 | 54, 66, 70 | 3eqtr4d 2781 |
. . 3
⊢ ((𝜑 ∧ 𝑛 ∈ 𝐷) → (𝐴‘((𝐵‘𝑋)‘𝑛)) = if(𝑛 = (𝐼 × {0}), (𝐴‘𝑋), (0g‘𝑂))) |
| 72 | 21 | adantr 481 |
. . . 4
⊢ ((𝜑 ∧ 𝑛 ∈ 𝐷) → (𝐵‘𝑋):𝐷⟶𝑆) |
| 73 | | simpr 485 |
. . . 4
⊢ ((𝜑 ∧ 𝑛 ∈ 𝐷) → 𝑛 ∈ 𝐷) |
| 74 | 72, 73 | fvco3d 6931 |
. . 3
⊢ ((𝜑 ∧ 𝑛 ∈ 𝐷) → ((𝐴 ∘ (𝐵‘𝑋))‘𝑛) = (𝐴‘((𝐵‘𝑋)‘𝑛))) |
| 75 | 37, 41 | fvmpt2d 6952 |
. . 3
⊢ ((𝜑 ∧ 𝑛 ∈ 𝐷) → ((𝐶‘(𝐴‘𝑋))‘𝑛) = if(𝑛 = (𝐼 × {0}), (𝐴‘𝑋), (0g‘𝑂))) |
| 76 | 71, 74, 75 | 3eqtr4d 2781 |
. 2
⊢ ((𝜑 ∧ 𝑛 ∈ 𝐷) → ((𝐴 ∘ (𝐵‘𝑋))‘𝑛) = ((𝐶‘(𝐴‘𝑋))‘𝑛)) |
| 77 | 23, 43, 76 | eqfnfvd 6977 |
1
⊢ (𝜑 → (𝐴 ∘ (𝐵‘𝑋)) = (𝐶‘(𝐴‘𝑋))) |