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Theorem mendring 44148
Description: The module endomorphism algebra is a ring. (Contributed by Stefan O'Rear, 5-Sep-2015.)
Hypothesis
Ref Expression
mendassa.a 𝐴 = (MEndo‘𝑀)
Assertion
Ref Expression
mendring (𝑀 ∈ LMod → 𝐴 ∈ Ring)

Proof of Theorem mendring
Dummy variables 𝑥 𝑦 𝑧 are mutually distinct and distinct from all other variables.
StepHypRef Expression
1 mendassa.a . . . 4 𝐴 = (MEndo‘𝑀)
21mendbas 44140 . . 3 (𝑀 LMHom 𝑀) = (Base‘𝐴)
32a1i 11 . 2 (𝑀 ∈ LMod → (𝑀 LMHom 𝑀) = (Base‘𝐴))
4 eqidd 2762 . 2 (𝑀 ∈ LMod → (+g‘𝐴) = (+g‘𝐴))
5 eqidd 2762 . 2 (𝑀 ∈ LMod → (.r‘𝐴) = (.r‘𝐴))
6 eqid 2761 . . . . . 6 (+g‘𝑀) = (+g‘𝑀)
7 eqid 2761 . . . . . 6 (+g‘𝐴) = (+g‘𝐴)
81, 2, 6, 7mendplusg 44142 . . . . 5 ((𝑥 ∈ (𝑀 LMHom 𝑀) ∧ 𝑦 ∈ (𝑀 LMHom 𝑀)) → (𝑥(+g‘𝐴)𝑦) = (𝑥 ∘f (+g‘𝑀)𝑦))
96lmhmplusg 21299 . . . . 5 ((𝑥 ∈ (𝑀 LMHom 𝑀) ∧ 𝑦 ∈ (𝑀 LMHom 𝑀)) → (𝑥 ∘f (+g‘𝑀)𝑦) ∈ (𝑀 LMHom 𝑀))
108, 9eqeltrd 2861 . . . 4 ((𝑥 ∈ (𝑀 LMHom 𝑀) ∧ 𝑦 ∈ (𝑀 LMHom 𝑀)) → (𝑥(+g‘𝐴)𝑦) ∈ (𝑀 LMHom 𝑀))
11103adant1 1148 . . 3 ((𝑀 ∈ LMod ∧ 𝑥 ∈ (𝑀 LMHom 𝑀) ∧ 𝑦 ∈ (𝑀 LMHom 𝑀)) → (𝑥(+g‘𝐴)𝑦) ∈ (𝑀 LMHom 𝑀))
12 simpr1 1213 . . . . . 6 ((𝑀 ∈ LMod ∧ (𝑥 ∈ (𝑀 LMHom 𝑀) ∧ 𝑦 ∈ (𝑀 LMHom 𝑀) ∧ 𝑧 ∈ (𝑀 LMHom 𝑀))) → 𝑥 ∈ (𝑀 LMHom 𝑀))
13 simpr2 1214 . . . . . 6 ((𝑀 ∈ LMod ∧ (𝑥 ∈ (𝑀 LMHom 𝑀) ∧ 𝑦 ∈ (𝑀 LMHom 𝑀) ∧ 𝑧 ∈ (𝑀 LMHom 𝑀))) → 𝑦 ∈ (𝑀 LMHom 𝑀))
1412, 13, 9syl2anc 596 . . . . 5 ((𝑀 ∈ LMod ∧ (𝑥 ∈ (𝑀 LMHom 𝑀) ∧ 𝑦 ∈ (𝑀 LMHom 𝑀) ∧ 𝑧 ∈ (𝑀 LMHom 𝑀))) → (𝑥 ∘f (+g‘𝑀)𝑦) ∈ (𝑀 LMHom 𝑀))
15 simpr3 1215 . . . . 5 ((𝑀 ∈ LMod ∧ (𝑥 ∈ (𝑀 LMHom 𝑀) ∧ 𝑦 ∈ (𝑀 LMHom 𝑀) ∧ 𝑧 ∈ (𝑀 LMHom 𝑀))) → 𝑧 ∈ (𝑀 LMHom 𝑀))
161, 2, 6, 7mendplusg 44142 . . . . 5 (((𝑥 ∘f (+g‘𝑀)𝑦) ∈ (𝑀 LMHom 𝑀) ∧ 𝑧 ∈ (𝑀 LMHom 𝑀)) → ((𝑥 ∘f (+g‘𝑀)𝑦)(+g‘𝐴)𝑧) = ((𝑥 ∘f (+g‘𝑀)𝑦) ∘f (+g‘𝑀)𝑧))
1714, 15, 16syl2anc 596 . . . 4 ((𝑀 ∈ LMod ∧ (𝑥 ∈ (𝑀 LMHom 𝑀) ∧ 𝑦 ∈ (𝑀 LMHom 𝑀) ∧ 𝑧 ∈ (𝑀 LMHom 𝑀))) → ((𝑥 ∘f (+g‘𝑀)𝑦)(+g‘𝐴)𝑧) = ((𝑥 ∘f (+g‘𝑀)𝑦) ∘f (+g‘𝑀)𝑧))
1812, 13, 8syl2anc 596 . . . . 5 ((𝑀 ∈ LMod ∧ (𝑥 ∈ (𝑀 LMHom 𝑀) ∧ 𝑦 ∈ (𝑀 LMHom 𝑀) ∧ 𝑧 ∈ (𝑀 LMHom 𝑀))) → (𝑥(+g‘𝐴)𝑦) = (𝑥 ∘f (+g‘𝑀)𝑦))
1918oveq1d 7427 . . . 4 ((𝑀 ∈ LMod ∧ (𝑥 ∈ (𝑀 LMHom 𝑀) ∧ 𝑦 ∈ (𝑀 LMHom 𝑀) ∧ 𝑧 ∈ (𝑀 LMHom 𝑀))) → ((𝑥(+g‘𝐴)𝑦)(+g‘𝐴)𝑧) = ((𝑥 ∘f (+g‘𝑀)𝑦)(+g‘𝐴)𝑧))
206lmhmplusg 21299 . . . . . . 7 ((𝑦 ∈ (𝑀 LMHom 𝑀) ∧ 𝑧 ∈ (𝑀 LMHom 𝑀)) → (𝑦 ∘f (+g‘𝑀)𝑧) ∈ (𝑀 LMHom 𝑀))
2113, 15, 20syl2anc 596 . . . . . 6 ((𝑀 ∈ LMod ∧ (𝑥 ∈ (𝑀 LMHom 𝑀) ∧ 𝑦 ∈ (𝑀 LMHom 𝑀) ∧ 𝑧 ∈ (𝑀 LMHom 𝑀))) → (𝑦 ∘f (+g‘𝑀)𝑧) ∈ (𝑀 LMHom 𝑀))
221, 2, 6, 7mendplusg 44142 . . . . . 6 ((𝑥 ∈ (𝑀 LMHom 𝑀) ∧ (𝑦 ∘f (+g‘𝑀)𝑧) ∈ (𝑀 LMHom 𝑀)) → (𝑥(+g‘𝐴)(𝑦 ∘f (+g‘𝑀)𝑧)) = (𝑥 ∘f (+g‘𝑀)(𝑦 ∘f (+g‘𝑀)𝑧)))
2312, 21, 22syl2anc 596 . . . . 5 ((𝑀 ∈ LMod ∧ (𝑥 ∈ (𝑀 LMHom 𝑀) ∧ 𝑦 ∈ (𝑀 LMHom 𝑀) ∧ 𝑧 ∈ (𝑀 LMHom 𝑀))) → (𝑥(+g‘𝐴)(𝑦 ∘f (+g‘𝑀)𝑧)) = (𝑥 ∘f (+g‘𝑀)(𝑦 ∘f (+g‘𝑀)𝑧)))
241, 2, 6, 7mendplusg 44142 . . . . . . 7 ((𝑦 ∈ (𝑀 LMHom 𝑀) ∧ 𝑧 ∈ (𝑀 LMHom 𝑀)) → (𝑦(+g‘𝐴)𝑧) = (𝑦 ∘f (+g‘𝑀)𝑧))
2513, 15, 24syl2anc 596 . . . . . 6 ((𝑀 ∈ LMod ∧ (𝑥 ∈ (𝑀 LMHom 𝑀) ∧ 𝑦 ∈ (𝑀 LMHom 𝑀) ∧ 𝑧 ∈ (𝑀 LMHom 𝑀))) → (𝑦(+g‘𝐴)𝑧) = (𝑦 ∘f (+g‘𝑀)𝑧))
2625oveq2d 7428 . . . . 5 ((𝑀 ∈ LMod ∧ (𝑥 ∈ (𝑀 LMHom 𝑀) ∧ 𝑦 ∈ (𝑀 LMHom 𝑀) ∧ 𝑧 ∈ (𝑀 LMHom 𝑀))) → (𝑥(+g‘𝐴)(𝑦(+g‘𝐴)𝑧)) = (𝑥(+g‘𝐴)(𝑦 ∘f (+g‘𝑀)𝑧)))
27 lmodgrp 21122 . . . . . . . 8 (𝑀 ∈ LMod → 𝑀 ∈ Grp)
2827grpmndd 19137 . . . . . . 7 (𝑀 ∈ LMod → 𝑀 ∈ Mnd)
2928adantr 486 . . . . . 6 ((𝑀 ∈ LMod ∧ (𝑥 ∈ (𝑀 LMHom 𝑀) ∧ 𝑦 ∈ (𝑀 LMHom 𝑀) ∧ 𝑧 ∈ (𝑀 LMHom 𝑀))) → 𝑀 ∈ Mnd)
30 eqid 2761 . . . . . . . . 9 (Base‘𝑀) = (Base‘𝑀)
3130, 30lmhmf 21289 . . . . . . . 8 (𝑥 ∈ (𝑀 LMHom 𝑀) → 𝑥:(Base‘𝑀)⟶(Base‘𝑀))
3212, 31syl 18 . . . . . . 7 ((𝑀 ∈ LMod ∧ (𝑥 ∈ (𝑀 LMHom 𝑀) ∧ 𝑦 ∈ (𝑀 LMHom 𝑀) ∧ 𝑧 ∈ (𝑀 LMHom 𝑀))) → 𝑥:(Base‘𝑀)⟶(Base‘𝑀))
33 fvex 6890 . . . . . . . 8 (Base‘𝑀) ∈ V
3433, 33elmap 8883 . . . . . . 7 (𝑥 ∈ ((Base‘𝑀) ↑m (Base‘𝑀)) ↔ 𝑥:(Base‘𝑀)⟶(Base‘𝑀))
3532, 34sylibr 237 . . . . . 6 ((𝑀 ∈ LMod ∧ (𝑥 ∈ (𝑀 LMHom 𝑀) ∧ 𝑦 ∈ (𝑀 LMHom 𝑀) ∧ 𝑧 ∈ (𝑀 LMHom 𝑀))) → 𝑥 ∈ ((Base‘𝑀) ↑m (Base‘𝑀)))
3630, 30lmhmf 21289 . . . . . . . 8 (𝑦 ∈ (𝑀 LMHom 𝑀) → 𝑦:(Base‘𝑀)⟶(Base‘𝑀))
3713, 36syl 18 . . . . . . 7 ((𝑀 ∈ LMod ∧ (𝑥 ∈ (𝑀 LMHom 𝑀) ∧ 𝑦 ∈ (𝑀 LMHom 𝑀) ∧ 𝑧 ∈ (𝑀 LMHom 𝑀))) → 𝑦:(Base‘𝑀)⟶(Base‘𝑀))
3833, 33elmap 8883 . . . . . . 7 (𝑦 ∈ ((Base‘𝑀) ↑m (Base‘𝑀)) ↔ 𝑦:(Base‘𝑀)⟶(Base‘𝑀))
3937, 38sylibr 237 . . . . . 6 ((𝑀 ∈ LMod ∧ (𝑥 ∈ (𝑀 LMHom 𝑀) ∧ 𝑦 ∈ (𝑀 LMHom 𝑀) ∧ 𝑧 ∈ (𝑀 LMHom 𝑀))) → 𝑦 ∈ ((Base‘𝑀) ↑m (Base‘𝑀)))
4030, 30lmhmf 21289 . . . . . . . 8 (𝑧 ∈ (𝑀 LMHom 𝑀) → 𝑧:(Base‘𝑀)⟶(Base‘𝑀))
4115, 40syl 18 . . . . . . 7 ((𝑀 ∈ LMod ∧ (𝑥 ∈ (𝑀 LMHom 𝑀) ∧ 𝑦 ∈ (𝑀 LMHom 𝑀) ∧ 𝑧 ∈ (𝑀 LMHom 𝑀))) → 𝑧:(Base‘𝑀)⟶(Base‘𝑀))
4233, 33elmap 8883 . . . . . . 7 (𝑧 ∈ ((Base‘𝑀) ↑m (Base‘𝑀)) ↔ 𝑧:(Base‘𝑀)⟶(Base‘𝑀))
4341, 42sylibr 237 . . . . . 6 ((𝑀 ∈ LMod ∧ (𝑥 ∈ (𝑀 LMHom 𝑀) ∧ 𝑦 ∈ (𝑀 LMHom 𝑀) ∧ 𝑧 ∈ (𝑀 LMHom 𝑀))) → 𝑧 ∈ ((Base‘𝑀) ↑m (Base‘𝑀)))
4430, 6mndvass 18973 . . . . . 6 ((𝑀 ∈ Mnd ∧ (𝑥 ∈ ((Base‘𝑀) ↑m (Base‘𝑀)) ∧ 𝑦 ∈ ((Base‘𝑀) ↑m (Base‘𝑀)) ∧ 𝑧 ∈ ((Base‘𝑀) ↑m (Base‘𝑀)))) → ((𝑥 ∘f (+g‘𝑀)𝑦) ∘f (+g‘𝑀)𝑧) = (𝑥 ∘f (+g‘𝑀)(𝑦 ∘f (+g‘𝑀)𝑧)))
4529, 35, 39, 43, 44syl13anc 1399 . . . . 5 ((𝑀 ∈ LMod ∧ (𝑥 ∈ (𝑀 LMHom 𝑀) ∧ 𝑦 ∈ (𝑀 LMHom 𝑀) ∧ 𝑧 ∈ (𝑀 LMHom 𝑀))) → ((𝑥 ∘f (+g‘𝑀)𝑦) ∘f (+g‘𝑀)𝑧) = (𝑥 ∘f (+g‘𝑀)(𝑦 ∘f (+g‘𝑀)𝑧)))
4623, 26, 453eqtr4d 2806 . . . 4 ((𝑀 ∈ LMod ∧ (𝑥 ∈ (𝑀 LMHom 𝑀) ∧ 𝑦 ∈ (𝑀 LMHom 𝑀) ∧ 𝑧 ∈ (𝑀 LMHom 𝑀))) → (𝑥(+g‘𝐴)(𝑦(+g‘𝐴)𝑧)) = ((𝑥 ∘f (+g‘𝑀)𝑦) ∘f (+g‘𝑀)𝑧))
4717, 19, 463eqtr4d 2806 . . 3 ((𝑀 ∈ LMod ∧ (𝑥 ∈ (𝑀 LMHom 𝑀) ∧ 𝑦 ∈ (𝑀 LMHom 𝑀) ∧ 𝑧 ∈ (𝑀 LMHom 𝑀))) → ((𝑥(+g‘𝐴)𝑦)(+g‘𝐴)𝑧) = (𝑥(+g‘𝐴)(𝑦(+g‘𝐴)𝑧)))
48 id 23 . . . 4 (𝑀 ∈ LMod → 𝑀 ∈ LMod)
49 eqidd 2762 . . . 4 (𝑀 ∈ LMod → (Scalar‘𝑀) = (Scalar‘𝑀))
50 eqid 2761 . . . . 5 (0g‘𝑀) = (0g‘𝑀)
51 eqid 2761 . . . . 5 (Scalar‘𝑀) = (Scalar‘𝑀)
5250, 30, 51, 510lmhm 21295 . . . 4 ((𝑀 ∈ LMod ∧ 𝑀 ∈ LMod ∧ (Scalar‘𝑀) = (Scalar‘𝑀)) → ((Base‘𝑀) × {(0g‘𝑀)}) ∈ (𝑀 LMHom 𝑀))
5348, 48, 49, 52syl3anc 1398 . . 3 (𝑀 ∈ LMod → ((Base‘𝑀) × {(0g‘𝑀)}) ∈ (𝑀 LMHom 𝑀))
541, 2, 6, 7mendplusg 44142 . . . . 5 ((((Base‘𝑀) × {(0g‘𝑀)}) ∈ (𝑀 LMHom 𝑀) ∧ 𝑥 ∈ (𝑀 LMHom 𝑀)) → (((Base‘𝑀) × {(0g‘𝑀)})(+g‘𝐴)𝑥) = (((Base‘𝑀) × {(0g‘𝑀)}) ∘f (+g‘𝑀)𝑥))
5553, 54sylan 592 . . . 4 ((𝑀 ∈ LMod ∧ 𝑥 ∈ (𝑀 LMHom 𝑀)) → (((Base‘𝑀) × {(0g‘𝑀)})(+g‘𝐴)𝑥) = (((Base‘𝑀) × {(0g‘𝑀)}) ∘f (+g‘𝑀)𝑥))
5631, 34sylibr 237 . . . . 5 (𝑥 ∈ (𝑀 LMHom 𝑀) → 𝑥 ∈ ((Base‘𝑀) ↑m (Base‘𝑀)))
5730, 6, 50mndvlid 18974 . . . . 5 ((𝑀 ∈ Mnd ∧ 𝑥 ∈ ((Base‘𝑀) ↑m (Base‘𝑀))) → (((Base‘𝑀) × {(0g‘𝑀)}) ∘f (+g‘𝑀)𝑥) = 𝑥)
5828, 56, 57syl2an 608 . . . 4 ((𝑀 ∈ LMod ∧ 𝑥 ∈ (𝑀 LMHom 𝑀)) → (((Base‘𝑀) × {(0g‘𝑀)}) ∘f (+g‘𝑀)𝑥) = 𝑥)
5955, 58eqtrd 2796 . . 3 ((𝑀 ∈ LMod ∧ 𝑥 ∈ (𝑀 LMHom 𝑀)) → (((Base‘𝑀) × {(0g‘𝑀)})(+g‘𝐴)𝑥) = 𝑥)
60 eqid 2761 . . . . 5 (invg‘𝑀) = (invg‘𝑀)
6160invlmhm 21297 . . . 4 (𝑀 ∈ LMod → (invg‘𝑀) ∈ (𝑀 LMHom 𝑀))
62 lmhmco 21298 . . . 4 (((invg‘𝑀) ∈ (𝑀 LMHom 𝑀) ∧ 𝑥 ∈ (𝑀 LMHom 𝑀)) → ((invg‘𝑀) ∘ 𝑥) ∈ (𝑀 LMHom 𝑀))
6361, 62sylan 592 . . 3 ((𝑀 ∈ LMod ∧ 𝑥 ∈ (𝑀 LMHom 𝑀)) → ((invg‘𝑀) ∘ 𝑥) ∈ (𝑀 LMHom 𝑀))
641, 2, 6, 7mendplusg 44142 . . . . 5 ((((invg‘𝑀) ∘ 𝑥) ∈ (𝑀 LMHom 𝑀) ∧ 𝑥 ∈ (𝑀 LMHom 𝑀)) → (((invg‘𝑀) ∘ 𝑥)(+g‘𝐴)𝑥) = (((invg‘𝑀) ∘ 𝑥) ∘f (+g‘𝑀)𝑥))
6563, 64sylancom 600 . . . 4 ((𝑀 ∈ LMod ∧ 𝑥 ∈ (𝑀 LMHom 𝑀)) → (((invg‘𝑀) ∘ 𝑥)(+g‘𝐴)𝑥) = (((invg‘𝑀) ∘ 𝑥) ∘f (+g‘𝑀)𝑥))
6630, 6, 60, 50grpvlinv 22693 . . . . 5 ((𝑀 ∈ Grp ∧ 𝑥 ∈ ((Base‘𝑀) ↑m (Base‘𝑀))) → (((invg‘𝑀) ∘ 𝑥) ∘f (+g‘𝑀)𝑥) = ((Base‘𝑀) × {(0g‘𝑀)}))
6727, 56, 66syl2an 608 . . . 4 ((𝑀 ∈ LMod ∧ 𝑥 ∈ (𝑀 LMHom 𝑀)) → (((invg‘𝑀) ∘ 𝑥) ∘f (+g‘𝑀)𝑥) = ((Base‘𝑀) × {(0g‘𝑀)}))
6865, 67eqtrd 2796 . . 3 ((𝑀 ∈ LMod ∧ 𝑥 ∈ (𝑀 LMHom 𝑀)) → (((invg‘𝑀) ∘ 𝑥)(+g‘𝐴)𝑥) = ((Base‘𝑀) × {(0g‘𝑀)}))
693, 4, 11, 47, 53, 59, 63, 68isgrpd 19149 . 2 (𝑀 ∈ LMod → 𝐴 ∈ Grp)
70 eqid 2761 . . . . 5 (.r‘𝐴) = (.r‘𝐴)
711, 2, 70mendmulr 44144 . . . 4 ((𝑥 ∈ (𝑀 LMHom 𝑀) ∧ 𝑦 ∈ (𝑀 LMHom 𝑀)) → (𝑥(.r‘𝐴)𝑦) = (𝑥 ∘ 𝑦))
72 lmhmco 21298 . . . 4 ((𝑥 ∈ (𝑀 LMHom 𝑀) ∧ 𝑦 ∈ (𝑀 LMHom 𝑀)) → (𝑥 ∘ 𝑦) ∈ (𝑀 LMHom 𝑀))
7371, 72eqeltrd 2861 . . 3 ((𝑥 ∈ (𝑀 LMHom 𝑀) ∧ 𝑦 ∈ (𝑀 LMHom 𝑀)) → (𝑥(.r‘𝐴)𝑦) ∈ (𝑀 LMHom 𝑀))
74733adant1 1148 . 2 ((𝑀 ∈ LMod ∧ 𝑥 ∈ (𝑀 LMHom 𝑀) ∧ 𝑦 ∈ (𝑀 LMHom 𝑀)) → (𝑥(.r‘𝐴)𝑦) ∈ (𝑀 LMHom 𝑀))
75 coass 6260 . . 3 ((𝑥 ∘ 𝑦) ∘ 𝑧) = (𝑥 ∘ (𝑦 ∘ 𝑧))
7612, 13, 71syl2anc 596 . . . . 5 ((𝑀 ∈ LMod ∧ (𝑥 ∈ (𝑀 LMHom 𝑀) ∧ 𝑦 ∈ (𝑀 LMHom 𝑀) ∧ 𝑧 ∈ (𝑀 LMHom 𝑀))) → (𝑥(.r‘𝐴)𝑦) = (𝑥 ∘ 𝑦))
7776oveq1d 7427 . . . 4 ((𝑀 ∈ LMod ∧ (𝑥 ∈ (𝑀 LMHom 𝑀) ∧ 𝑦 ∈ (𝑀 LMHom 𝑀) ∧ 𝑧 ∈ (𝑀 LMHom 𝑀))) → ((𝑥(.r‘𝐴)𝑦)(.r‘𝐴)𝑧) = ((𝑥 ∘ 𝑦)(.r‘𝐴)𝑧))
7812, 13, 72syl2anc 596 . . . . 5 ((𝑀 ∈ LMod ∧ (𝑥 ∈ (𝑀 LMHom 𝑀) ∧ 𝑦 ∈ (𝑀 LMHom 𝑀) ∧ 𝑧 ∈ (𝑀 LMHom 𝑀))) → (𝑥 ∘ 𝑦) ∈ (𝑀 LMHom 𝑀))
791, 2, 70mendmulr 44144 . . . . 5 (((𝑥 ∘ 𝑦) ∈ (𝑀 LMHom 𝑀) ∧ 𝑧 ∈ (𝑀 LMHom 𝑀)) → ((𝑥 ∘ 𝑦)(.r‘𝐴)𝑧) = ((𝑥 ∘ 𝑦) ∘ 𝑧))
8078, 15, 79syl2anc 596 . . . 4 ((𝑀 ∈ LMod ∧ (𝑥 ∈ (𝑀 LMHom 𝑀) ∧ 𝑦 ∈ (𝑀 LMHom 𝑀) ∧ 𝑧 ∈ (𝑀 LMHom 𝑀))) → ((𝑥 ∘ 𝑦)(.r‘𝐴)𝑧) = ((𝑥 ∘ 𝑦) ∘ 𝑧))
8177, 80eqtrd 2796 . . 3 ((𝑀 ∈ LMod ∧ (𝑥 ∈ (𝑀 LMHom 𝑀) ∧ 𝑦 ∈ (𝑀 LMHom 𝑀) ∧ 𝑧 ∈ (𝑀 LMHom 𝑀))) → ((𝑥(.r‘𝐴)𝑦)(.r‘𝐴)𝑧) = ((𝑥 ∘ 𝑦) ∘ 𝑧))
821, 2, 70mendmulr 44144 . . . . . 6 ((𝑦 ∈ (𝑀 LMHom 𝑀) ∧ 𝑧 ∈ (𝑀 LMHom 𝑀)) → (𝑦(.r‘𝐴)𝑧) = (𝑦 ∘ 𝑧))
8313, 15, 82syl2anc 596 . . . . 5 ((𝑀 ∈ LMod ∧ (𝑥 ∈ (𝑀 LMHom 𝑀) ∧ 𝑦 ∈ (𝑀 LMHom 𝑀) ∧ 𝑧 ∈ (𝑀 LMHom 𝑀))) → (𝑦(.r‘𝐴)𝑧) = (𝑦 ∘ 𝑧))
8483oveq2d 7428 . . . 4 ((𝑀 ∈ LMod ∧ (𝑥 ∈ (𝑀 LMHom 𝑀) ∧ 𝑦 ∈ (𝑀 LMHom 𝑀) ∧ 𝑧 ∈ (𝑀 LMHom 𝑀))) → (𝑥(.r‘𝐴)(𝑦(.r‘𝐴)𝑧)) = (𝑥(.r‘𝐴)(𝑦 ∘ 𝑧)))
85 lmhmco 21298 . . . . . 6 ((𝑦 ∈ (𝑀 LMHom 𝑀) ∧ 𝑧 ∈ (𝑀 LMHom 𝑀)) → (𝑦 ∘ 𝑧) ∈ (𝑀 LMHom 𝑀))
8613, 15, 85syl2anc 596 . . . . 5 ((𝑀 ∈ LMod ∧ (𝑥 ∈ (𝑀 LMHom 𝑀) ∧ 𝑦 ∈ (𝑀 LMHom 𝑀) ∧ 𝑧 ∈ (𝑀 LMHom 𝑀))) → (𝑦 ∘ 𝑧) ∈ (𝑀 LMHom 𝑀))
871, 2, 70mendmulr 44144 . . . . 5 ((𝑥 ∈ (𝑀 LMHom 𝑀) ∧ (𝑦 ∘ 𝑧) ∈ (𝑀 LMHom 𝑀)) → (𝑥(.r‘𝐴)(𝑦 ∘ 𝑧)) = (𝑥 ∘ (𝑦 ∘ 𝑧)))
8812, 86, 87syl2anc 596 . . . 4 ((𝑀 ∈ LMod ∧ (𝑥 ∈ (𝑀 LMHom 𝑀) ∧ 𝑦 ∈ (𝑀 LMHom 𝑀) ∧ 𝑧 ∈ (𝑀 LMHom 𝑀))) → (𝑥(.r‘𝐴)(𝑦 ∘ 𝑧)) = (𝑥 ∘ (𝑦 ∘ 𝑧)))
8984, 88eqtrd 2796 . . 3 ((𝑀 ∈ LMod ∧ (𝑥 ∈ (𝑀 LMHom 𝑀) ∧ 𝑦 ∈ (𝑀 LMHom 𝑀) ∧ 𝑧 ∈ (𝑀 LMHom 𝑀))) → (𝑥(.r‘𝐴)(𝑦(.r‘𝐴)𝑧)) = (𝑥 ∘ (𝑦 ∘ 𝑧)))
9075, 81, 893eqtr4a 2822 . 2 ((𝑀 ∈ LMod ∧ (𝑥 ∈ (𝑀 LMHom 𝑀) ∧ 𝑦 ∈ (𝑀 LMHom 𝑀) ∧ 𝑧 ∈ (𝑀 LMHom 𝑀))) → ((𝑥(.r‘𝐴)𝑦)(.r‘𝐴)𝑧) = (𝑥(.r‘𝐴)(𝑦(.r‘𝐴)𝑧)))
911, 2, 70mendmulr 44144 . . . 4 ((𝑥 ∈ (𝑀 LMHom 𝑀) ∧ (𝑦 ∘f (+g‘𝑀)𝑧) ∈ (𝑀 LMHom 𝑀)) → (𝑥(.r‘𝐴)(𝑦 ∘f (+g‘𝑀)𝑧)) = (𝑥 ∘ (𝑦 ∘f (+g‘𝑀)𝑧)))
9212, 21, 91syl2anc 596 . . 3 ((𝑀 ∈ LMod ∧ (𝑥 ∈ (𝑀 LMHom 𝑀) ∧ 𝑦 ∈ (𝑀 LMHom 𝑀) ∧ 𝑧 ∈ (𝑀 LMHom 𝑀))) → (𝑥(.r‘𝐴)(𝑦 ∘f (+g‘𝑀)𝑧)) = (𝑥 ∘ (𝑦 ∘f (+g‘𝑀)𝑧)))
9325oveq2d 7428 . . 3 ((𝑀 ∈ LMod ∧ (𝑥 ∈ (𝑀 LMHom 𝑀) ∧ 𝑦 ∈ (𝑀 LMHom 𝑀) ∧ 𝑧 ∈ (𝑀 LMHom 𝑀))) → (𝑥(.r‘𝐴)(𝑦(+g‘𝐴)𝑧)) = (𝑥(.r‘𝐴)(𝑦 ∘f (+g‘𝑀)𝑧)))
94 lmhmco 21298 . . . . . 6 ((𝑥 ∈ (𝑀 LMHom 𝑀) ∧ 𝑧 ∈ (𝑀 LMHom 𝑀)) → (𝑥 ∘ 𝑧) ∈ (𝑀 LMHom 𝑀))
9512, 15, 94syl2anc 596 . . . . 5 ((𝑀 ∈ LMod ∧ (𝑥 ∈ (𝑀 LMHom 𝑀) ∧ 𝑦 ∈ (𝑀 LMHom 𝑀) ∧ 𝑧 ∈ (𝑀 LMHom 𝑀))) → (𝑥 ∘ 𝑧) ∈ (𝑀 LMHom 𝑀))
961, 2, 6, 7mendplusg 44142 . . . . 5 (((𝑥 ∘ 𝑦) ∈ (𝑀 LMHom 𝑀) ∧ (𝑥 ∘ 𝑧) ∈ (𝑀 LMHom 𝑀)) → ((𝑥 ∘ 𝑦)(+g‘𝐴)(𝑥 ∘ 𝑧)) = ((𝑥 ∘ 𝑦) ∘f (+g‘𝑀)(𝑥 ∘ 𝑧)))
9778, 95, 96syl2anc 596 . . . 4 ((𝑀 ∈ LMod ∧ (𝑥 ∈ (𝑀 LMHom 𝑀) ∧ 𝑦 ∈ (𝑀 LMHom 𝑀) ∧ 𝑧 ∈ (𝑀 LMHom 𝑀))) → ((𝑥 ∘ 𝑦)(+g‘𝐴)(𝑥 ∘ 𝑧)) = ((𝑥 ∘ 𝑦) ∘f (+g‘𝑀)(𝑥 ∘ 𝑧)))
981, 2, 70mendmulr 44144 . . . . . 6 ((𝑥 ∈ (𝑀 LMHom 𝑀) ∧ 𝑧 ∈ (𝑀 LMHom 𝑀)) → (𝑥(.r‘𝐴)𝑧) = (𝑥 ∘ 𝑧))
9912, 15, 98syl2anc 596 . . . . 5 ((𝑀 ∈ LMod ∧ (𝑥 ∈ (𝑀 LMHom 𝑀) ∧ 𝑦 ∈ (𝑀 LMHom 𝑀) ∧ 𝑧 ∈ (𝑀 LMHom 𝑀))) → (𝑥(.r‘𝐴)𝑧) = (𝑥 ∘ 𝑧))
10076, 99oveq12d 7430 . . . 4 ((𝑀 ∈ LMod ∧ (𝑥 ∈ (𝑀 LMHom 𝑀) ∧ 𝑦 ∈ (𝑀 LMHom 𝑀) ∧ 𝑧 ∈ (𝑀 LMHom 𝑀))) → ((𝑥(.r‘𝐴)𝑦)(+g‘𝐴)(𝑥(.r‘𝐴)𝑧)) = ((𝑥 ∘ 𝑦)(+g‘𝐴)(𝑥 ∘ 𝑧)))
101 lmghm 21286 . . . . . 6 (𝑥 ∈ (𝑀 LMHom 𝑀) → 𝑥 ∈ (𝑀 GrpHom 𝑀))
102 ghmmhm 19420 . . . . . 6 (𝑥 ∈ (𝑀 GrpHom 𝑀) → 𝑥 ∈ (𝑀 MndHom 𝑀))
10312, 101, 1023syl 19 . . . . 5 ((𝑀 ∈ LMod ∧ (𝑥 ∈ (𝑀 LMHom 𝑀) ∧ 𝑦 ∈ (𝑀 LMHom 𝑀) ∧ 𝑧 ∈ (𝑀 LMHom 𝑀))) → 𝑥 ∈ (𝑀 MndHom 𝑀))
10430, 6, 6mhmvlin 18976 . . . . 5 ((𝑥 ∈ (𝑀 MndHom 𝑀) ∧ 𝑦 ∈ ((Base‘𝑀) ↑m (Base‘𝑀)) ∧ 𝑧 ∈ ((Base‘𝑀) ↑m (Base‘𝑀))) → (𝑥 ∘ (𝑦 ∘f (+g‘𝑀)𝑧)) = ((𝑥 ∘ 𝑦) ∘f (+g‘𝑀)(𝑥 ∘ 𝑧)))
105103, 39, 43, 104syl3anc 1398 . . . 4 ((𝑀 ∈ LMod ∧ (𝑥 ∈ (𝑀 LMHom 𝑀) ∧ 𝑦 ∈ (𝑀 LMHom 𝑀) ∧ 𝑧 ∈ (𝑀 LMHom 𝑀))) → (𝑥 ∘ (𝑦 ∘f (+g‘𝑀)𝑧)) = ((𝑥 ∘ 𝑦) ∘f (+g‘𝑀)(𝑥 ∘ 𝑧)))
10697, 100, 1053eqtr4d 2806 . . 3 ((𝑀 ∈ LMod ∧ (𝑥 ∈ (𝑀 LMHom 𝑀) ∧ 𝑦 ∈ (𝑀 LMHom 𝑀) ∧ 𝑧 ∈ (𝑀 LMHom 𝑀))) → ((𝑥(.r‘𝐴)𝑦)(+g‘𝐴)(𝑥(.r‘𝐴)𝑧)) = (𝑥 ∘ (𝑦 ∘f (+g‘𝑀)𝑧)))
10792, 93, 1063eqtr4d 2806 . 2 ((𝑀 ∈ LMod ∧ (𝑥 ∈ (𝑀 LMHom 𝑀) ∧ 𝑦 ∈ (𝑀 LMHom 𝑀) ∧ 𝑧 ∈ (𝑀 LMHom 𝑀))) → (𝑥(.r‘𝐴)(𝑦(+g‘𝐴)𝑧)) = ((𝑥(.r‘𝐴)𝑦)(+g‘𝐴)(𝑥(.r‘𝐴)𝑧)))
1081, 2, 70mendmulr 44144 . . . 4 (((𝑥 ∘f (+g‘𝑀)𝑦) ∈ (𝑀 LMHom 𝑀) ∧ 𝑧 ∈ (𝑀 LMHom 𝑀)) → ((𝑥 ∘f (+g‘𝑀)𝑦)(.r‘𝐴)𝑧) = ((𝑥 ∘f (+g‘𝑀)𝑦) ∘ 𝑧))
10914, 15, 108syl2anc 596 . . 3 ((𝑀 ∈ LMod ∧ (𝑥 ∈ (𝑀 LMHom 𝑀) ∧ 𝑦 ∈ (𝑀 LMHom 𝑀) ∧ 𝑧 ∈ (𝑀 LMHom 𝑀))) → ((𝑥 ∘f (+g‘𝑀)𝑦)(.r‘𝐴)𝑧) = ((𝑥 ∘f (+g‘𝑀)𝑦) ∘ 𝑧))
11018oveq1d 7427 . . 3 ((𝑀 ∈ LMod ∧ (𝑥 ∈ (𝑀 LMHom 𝑀) ∧ 𝑦 ∈ (𝑀 LMHom 𝑀) ∧ 𝑧 ∈ (𝑀 LMHom 𝑀))) → ((𝑥(+g‘𝐴)𝑦)(.r‘𝐴)𝑧) = ((𝑥 ∘f (+g‘𝑀)𝑦)(.r‘𝐴)𝑧))
1111, 2, 6, 7mendplusg 44142 . . . . 5 (((𝑥 ∘ 𝑧) ∈ (𝑀 LMHom 𝑀) ∧ (𝑦 ∘ 𝑧) ∈ (𝑀 LMHom 𝑀)) → ((𝑥 ∘ 𝑧)(+g‘𝐴)(𝑦 ∘ 𝑧)) = ((𝑥 ∘ 𝑧) ∘f (+g‘𝑀)(𝑦 ∘ 𝑧)))
11295, 86, 111syl2anc 596 . . . 4 ((𝑀 ∈ LMod ∧ (𝑥 ∈ (𝑀 LMHom 𝑀) ∧ 𝑦 ∈ (𝑀 LMHom 𝑀) ∧ 𝑧 ∈ (𝑀 LMHom 𝑀))) → ((𝑥 ∘ 𝑧)(+g‘𝐴)(𝑦 ∘ 𝑧)) = ((𝑥 ∘ 𝑧) ∘f (+g‘𝑀)(𝑦 ∘ 𝑧)))
11399, 83oveq12d 7430 . . . 4 ((𝑀 ∈ LMod ∧ (𝑥 ∈ (𝑀 LMHom 𝑀) ∧ 𝑦 ∈ (𝑀 LMHom 𝑀) ∧ 𝑧 ∈ (𝑀 LMHom 𝑀))) → ((𝑥(.r‘𝐴)𝑧)(+g‘𝐴)(𝑦(.r‘𝐴)𝑧)) = ((𝑥 ∘ 𝑧)(+g‘𝐴)(𝑦 ∘ 𝑧)))
114 ffn 6701 . . . . . 6 (𝑥:(Base‘𝑀)⟶(Base‘𝑀) → 𝑥 Fn (Base‘𝑀))
11512, 31, 1143syl 19 . . . . 5 ((𝑀 ∈ LMod ∧ (𝑥 ∈ (𝑀 LMHom 𝑀) ∧ 𝑦 ∈ (𝑀 LMHom 𝑀) ∧ 𝑧 ∈ (𝑀 LMHom 𝑀))) → 𝑥 Fn (Base‘𝑀))
116 ffn 6701 . . . . . 6 (𝑦:(Base‘𝑀)⟶(Base‘𝑀) → 𝑦 Fn (Base‘𝑀))
11713, 36, 1163syl 19 . . . . 5 ((𝑀 ∈ LMod ∧ (𝑥 ∈ (𝑀 LMHom 𝑀) ∧ 𝑦 ∈ (𝑀 LMHom 𝑀) ∧ 𝑧 ∈ (𝑀 LMHom 𝑀))) → 𝑦 Fn (Base‘𝑀))
11833a1i 11 . . . . 5 ((𝑀 ∈ LMod ∧ (𝑥 ∈ (𝑀 LMHom 𝑀) ∧ 𝑦 ∈ (𝑀 LMHom 𝑀) ∧ 𝑧 ∈ (𝑀 LMHom 𝑀))) → (Base‘𝑀) ∈ V)
119 inidm 4172 . . . . 5 ((Base‘𝑀) ∩ (Base‘𝑀)) = (Base‘𝑀)
120115, 117, 41, 118, 118, 118, 119ofco 7707 . . . 4 ((𝑀 ∈ LMod ∧ (𝑥 ∈ (𝑀 LMHom 𝑀) ∧ 𝑦 ∈ (𝑀 LMHom 𝑀) ∧ 𝑧 ∈ (𝑀 LMHom 𝑀))) → ((𝑥 ∘f (+g‘𝑀)𝑦) ∘ 𝑧) = ((𝑥 ∘ 𝑧) ∘f (+g‘𝑀)(𝑦 ∘ 𝑧)))
121112, 113, 1203eqtr4d 2806 . . 3 ((𝑀 ∈ LMod ∧ (𝑥 ∈ (𝑀 LMHom 𝑀) ∧ 𝑦 ∈ (𝑀 LMHom 𝑀) ∧ 𝑧 ∈ (𝑀 LMHom 𝑀))) → ((𝑥(.r‘𝐴)𝑧)(+g‘𝐴)(𝑦(.r‘𝐴)𝑧)) = ((𝑥 ∘f (+g‘𝑀)𝑦) ∘ 𝑧))
122109, 110, 1213eqtr4d 2806 . 2 ((𝑀 ∈ LMod ∧ (𝑥 ∈ (𝑀 LMHom 𝑀) ∧ 𝑦 ∈ (𝑀 LMHom 𝑀) ∧ 𝑧 ∈ (𝑀 LMHom 𝑀))) → ((𝑥(+g‘𝐴)𝑦)(.r‘𝐴)𝑧) = ((𝑥(.r‘𝐴)𝑧)(+g‘𝐴)(𝑦(.r‘𝐴)𝑧)))
12330idlmhm 21296 . 2 (𝑀 ∈ LMod → ( I ↾ (Base‘𝑀)) ∈ (𝑀 LMHom 𝑀))
1241, 2, 70mendmulr 44144 . . . 4 ((( I ↾ (Base‘𝑀)) ∈ (𝑀 LMHom 𝑀) ∧ 𝑥 ∈ (𝑀 LMHom 𝑀)) → (( I ↾ (Base‘𝑀))(.r‘𝐴)𝑥) = (( I ↾ (Base‘𝑀)) ∘ 𝑥))
125123, 124sylan 592 . . 3 ((𝑀 ∈ LMod ∧ 𝑥 ∈ (𝑀 LMHom 𝑀)) → (( I ↾ (Base‘𝑀))(.r‘𝐴)𝑥) = (( I ↾ (Base‘𝑀)) ∘ 𝑥))
12631adantl 487 . . . 4 ((𝑀 ∈ LMod ∧ 𝑥 ∈ (𝑀 LMHom 𝑀)) → 𝑥:(Base‘𝑀)⟶(Base‘𝑀))
127 fcoi2 6749 . . . 4 (𝑥:(Base‘𝑀)⟶(Base‘𝑀) → (( I ↾ (Base‘𝑀)) ∘ 𝑥) = 𝑥)
128126, 127syl 18 . . 3 ((𝑀 ∈ LMod ∧ 𝑥 ∈ (𝑀 LMHom 𝑀)) → (( I ↾ (Base‘𝑀)) ∘ 𝑥) = 𝑥)
129125, 128eqtrd 2796 . 2 ((𝑀 ∈ LMod ∧ 𝑥 ∈ (𝑀 LMHom 𝑀)) → (( I ↾ (Base‘𝑀))(.r‘𝐴)𝑥) = 𝑥)
130 id 23 . . . 4 (𝑥 ∈ (𝑀 LMHom 𝑀) → 𝑥 ∈ (𝑀 LMHom 𝑀))
1311, 2, 70mendmulr 44144 . . . 4 ((𝑥 ∈ (𝑀 LMHom 𝑀) ∧ ( I ↾ (Base‘𝑀)) ∈ (𝑀 LMHom 𝑀)) → (𝑥(.r‘𝐴)( I ↾ (Base‘𝑀))) = (𝑥 ∘ ( I ↾ (Base‘𝑀))))
132130, 123, 131syl2anr 609 . . 3 ((𝑀 ∈ LMod ∧ 𝑥 ∈ (𝑀 LMHom 𝑀)) → (𝑥(.r‘𝐴)( I ↾ (Base‘𝑀))) = (𝑥 ∘ ( I ↾ (Base‘𝑀))))
133 fcoi1 6748 . . . 4 (𝑥:(Base‘𝑀)⟶(Base‘𝑀) → (𝑥 ∘ ( I ↾ (Base‘𝑀))) = 𝑥)
134126, 133syl 18 . . 3 ((𝑀 ∈ LMod ∧ 𝑥 ∈ (𝑀 LMHom 𝑀)) → (𝑥 ∘ ( I ↾ (Base‘𝑀))) = 𝑥)
135132, 134eqtrd 2796 . 2 ((𝑀 ∈ LMod ∧ 𝑥 ∈ (𝑀 LMHom 𝑀)) → (𝑥(.r‘𝐴)( I ↾ (Base‘𝑀))) = 𝑥)
1363, 4, 5, 69, 74, 90, 107, 122, 123, 129, 135isringd 20502 1 (𝑀 ∈ LMod → 𝐴 ∈ Ring)
Colors of variables:    wff setvar class
This proof depends on syntax axioms:   → wi 4   ∧ wa 401   ∧ w3a 1103   = wceq 1570   ∈ wcel 2145  Vcvv 3451  {csn 4584   I cid 5545   × cxp 5649   ↾ cres 5653   ∘ ccom 5655   Fn wfn 6526  ⟶wf 6527  ‘cfv 6531  (class class class)co 7412   ∘f cof 7680   ↑m cmap 8831  Basecbs 17367  +gcplusg 17408  .rcmulr 17409  Scalarcsca 17411  0gc0g 17590  Mndcmnd 18903   MndHom cmhm 18956  Grpcgrp 19124  invgcminusg 19125   GrpHom cghm 19407  Ringcrg 20439  LModclmod 21115   LMHom clmhm 21274  MEndocmend 44131
This proof depends on axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1828  ax-4 1842  ax-5 1943  ax-6 2000  ax-7 2041  ax-8 2147  ax-9 2155  ax-10 2178  ax-11 2194  ax-12 2213  ax-ext 2733  ax-rep 5232  ax-sep 5249  ax-nul 5260  ax-pow 5327  ax-pr 5391  ax-un 7740  ax-cnex 11237  ax-resscn 11238  ax-1cn 11239  ax-icn 11240  ax-addcl 11241  ax-addrcl 11242  ax-mulcl 11243  ax-mulrcl 11244  ax-mulcom 11245  ax-addass 11246  ax-mulass 11247  ax-distr 11248  ax-i2m1 11249  ax-1ne0 11250  ax-1rid 11251  ax-rnegex 11252  ax-rrecex 11253  ax-cnre 11254  ax-pre-lttri 11255  ax-pre-lttrn 11256  ax-pre-ltadd 11257  ax-pre-mulgt0 11258
This proof depends on definitions:  df-bi 210  df-an 402  df-or 862  df-3or 1104  df-3an 1105  df-tru 1573  df-fal 1583  df-ex 1813  df-nf 1817  df-sb 2100  df-mo 2565  df-eu 2595  df-clab 2740  df-cleq 2753  df-clel 2836  df-nfc 2910  df-ne 2957  df-nel 3063  df-ral 3078  df-rex 3088  df-rmo 3366  df-reu 3367  df-rab 3414  df-v 3453  df-sbc 3740  df-csb 3848  df-dif 3902  df-un 3904  df-in 3906  df-ss 3916  df-pss 3919  df-nul 4280  df-if 4483  df-pw 4559  df-sn 4585  df-pr 4587  df-tp 4589  df-op 4591  df-uni 4868  df-iun 4953  df-br 5104  df-opab 5168  df-mpt 5187  df-tr 5213  df-id 5546  df-eprel 5551  df-po 5559  df-so 5560  df-fr 5604  df-we 5606  df-xp 5657  df-rel 5658  df-cnv 5659  df-co 5660  df-dm 5661  df-rn 5662  df-res 5663  df-ima 5664  df-pred 6297  df-ord 6358  df-on 6359  df-lim 6360  df-suc 6361  df-iota 6487  df-fun 6533  df-fn 6534  df-f 6535  df-f1 6536  df-fo 6537  df-f1o 6538  df-fv 6539  df-riota 7369  df-ov 7415  df-oprab 7416  df-mpo 7417  df-of 7682  df-om 7867  df-1st 7990  df-2nd 7991  df-frecs 8283  df-wrecs 8314  df-recs 8363  df-rdg 8402  df-1o 8460  df-er 8701  df-map 8833  df-en 8958  df-dom 8959  df-sdom 8960  df-fin 8961  df-pnf 11326  df-mnf 11327  df-xr 11328  df-ltxr 11329  df-le 11330  df-sub 11524  df-neg 11525  df-nn 12317  df-2 12386  df-3 12387  df-4 12388  df-5 12389  df-6 12390  df-n0 12588  df-z 12675  df-uz 12947  df-fz 13621  df-struct 17305  df-sets 17322  df-slot 17340  df-ndx 17352  df-base 17368  df-plusg 17421  df-mulr 17422  df-sca 17424  df-vsca 17425  df-0g 17592  df-mgm 18796  df-sgrp 18888  df-mnd 18904  df-mhm 18958  df-grp 19127  df-minusg 19128  df-ghm 19408  df-cmn 19976  df-abl 19977  df-mgp 20341  df-rng 20355  df-ur 20388  df-ring 20441  df-lmod 21117  df-lmhm 21277  df-mend 44132
This theorem is used by:  mendlmod  44149  mendassa  44150
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