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Theorem mendring 44284
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 44276 . . 3 (𝑀 LMHom 𝑀) = (Base‘𝐴)
32a1i 11 . 2 (𝑀 ∈ LMod → (𝑀 LMHom 𝑀) = (Base‘𝐴))
4 eqidd 2761 . 2 (𝑀 ∈ LMod → (+g‘𝐴) = (+g‘𝐴))
5 eqidd 2761 . 2 (𝑀 ∈ LMod → (.r‘𝐴) = (.r‘𝐴))
6 eqid 2760 . . . . . 6 (+g‘𝑀) = (+g‘𝑀)
7 eqid 2760 . . . . . 6 (+g‘𝐴) = (+g‘𝐴)
81, 2, 6, 7mendplusg 44278 . . . . 5 ((𝑥 ∈ (𝑀 LMHom 𝑀) ∧ 𝑦 ∈ (𝑀 LMHom 𝑀)) → (𝑥(+g‘𝐴)𝑦) = (𝑥 ∘f (+g‘𝑀)𝑦))
96lmhmplusg 21325 . . . . 5 ((𝑥 ∈ (𝑀 LMHom 𝑀) ∧ 𝑦 ∈ (𝑀 LMHom 𝑀)) → (𝑥 ∘f (+g‘𝑀)𝑦) ∈ (𝑀 LMHom 𝑀))
108, 9eqeltrd 2860 . . . 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 44278 . . . . 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 7436 . . . 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 21325 . . . . . . 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 44278 . . . . . 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 44278 . . . . . . 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 7437 . . . . 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 21148 . . . . . . . 8 (𝑀 ∈ LMod → 𝑀 ∈ Grp)
2827grpmndd 19163 . . . . . . 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 2760 . . . . . . . . 9 (Base‘𝑀) = (Base‘𝑀)
3130, 30lmhmf 21315 . . . . . . . 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 6899 . . . . . . . 8 (Base‘𝑀) ∈ V
3433, 33elmap 8903 . . . . . . 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 21315 . . . . . . . 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 8903 . . . . . . 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 21315 . . . . . . . 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 8903 . . . . . . 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 18999 . . . . . 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 2805 . . . 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 2805 . . 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 2761 . . . 4 (𝑀 ∈ LMod → (Scalar‘𝑀) = (Scalar‘𝑀))
50 eqid 2760 . . . . 5 (0g‘𝑀) = (0g‘𝑀)
51 eqid 2760 . . . . 5 (Scalar‘𝑀) = (Scalar‘𝑀)
5250, 30, 51, 510lmhm 21321 . . . 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 44278 . . . . 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 19000 . . . . 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 2795 . . 3 ((𝑀 ∈ LMod ∧ 𝑥 ∈ (𝑀 LMHom 𝑀)) → (((Base‘𝑀) × {(0g‘𝑀)})(+g‘𝐴)𝑥) = 𝑥)
60 eqid 2760 . . . . 5 (invg‘𝑀) = (invg‘𝑀)
6160invlmhm 21323 . . . 4 (𝑀 ∈ LMod → (invg‘𝑀) ∈ (𝑀 LMHom 𝑀))
62 lmhmco 21324 . . . 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 44278 . . . . 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 22719 . . . . 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 2795 . . 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 19175 . 2 (𝑀 ∈ LMod → 𝐴 ∈ Grp)
70 eqid 2760 . . . . 5 (.r‘𝐴) = (.r‘𝐴)
711, 2, 70mendmulr 44280 . . . 4 ((𝑥 ∈ (𝑀 LMHom 𝑀) ∧ 𝑦 ∈ (𝑀 LMHom 𝑀)) → (𝑥(.r‘𝐴)𝑦) = (𝑥 ∘ 𝑦))
72 lmhmco 21324 . . . 4 ((𝑥 ∈ (𝑀 LMHom 𝑀) ∧ 𝑦 ∈ (𝑀 LMHom 𝑀)) → (𝑥 ∘ 𝑦) ∈ (𝑀 LMHom 𝑀))
7371, 72eqeltrd 2860 . . 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 6267 . . 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 7436 . . . 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 44280 . . . . 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 2795 . . 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 44280 . . . . . 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 7437 . . . 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 21324 . . . . . 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 44280 . . . . 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 2795 . . 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 2821 . 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 44280 . . . 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 7437 . . 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 21324 . . . . . 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 44278 . . . . 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 44280 . . . . . 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 7439 . . . 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 21312 . . . . . 6 (𝑥 ∈ (𝑀 LMHom 𝑀) → 𝑥 ∈ (𝑀 GrpHom 𝑀))
102 ghmmhm 19446 . . . . . 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 19002 . . . . 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 2805 . . 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 2805 . 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 44280 . . . 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 7436 . . 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 44278 . . . . 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 7439 . . . 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 6710 . . . . . 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 6710 . . . . . 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 4123 . . . . 5 ((Base‘𝑀) ∩ (Base‘𝑀)) = (Base‘𝑀)
120115, 117, 41, 118, 118, 118, 119ofco 7719 . . . 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 2805 . . 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 2805 . 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 21322 . 2 (𝑀 ∈ LMod → ( I ↾ (Base‘𝑀)) ∈ (𝑀 LMHom 𝑀))
1241, 2, 70mendmulr 44280 . . . 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 6758 . . . 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 2795 . 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 44280 . . . 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 6757 . . . 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 2795 . 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 20528 1 (𝑀 ∈ LMod → 𝐴 ∈ Ring)
Colors of variables:    wff setvar class
This proof depends on syntax axioms:   → wi 4   ∧ wa 401   ∧ w3a 1103   = wceq 1569   ∈ wcel 2144  Vcvv 3450  {csn 4584   I cid 5544   × cxp 5648   ↾ cres 5652   ∘ ccom 5654   Fn wfn 6534  ⟶wf 6535  ‘cfv 6539  (class class class)co 7421   ∘f cof 7692   ↑m cmap 8851  Basecbs 17393  +gcplusg 17434  .rcmulr 17435  Scalarcsca 17437  0gc0g 17616  Mndcmnd 18929   MndHom cmhm 18982  Grpcgrp 19150  invgcminusg 19151   GrpHom cghm 19433  Ringcrg 20465  LModclmod 21141   LMHom clmhm 21300  MEndocmend 44267
This proof depends on axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1827  ax-4 1841  ax-5 1942  ax-6 1999  ax-7 2040  ax-8 2146  ax-9 2154  ax-10 2177  ax-11 2193  ax-12 2212  ax-ext 2732  ax-rep 5231  ax-sep 5248  ax-nul 5259  ax-pow 5326  ax-pr 5390  ax-un 7752  ax-cnex 11260  ax-resscn 11261  ax-1cn 11262  ax-icn 11263  ax-addcl 11264  ax-addrcl 11265  ax-mulcl 11266  ax-mulrcl 11267  ax-mulcom 11268  ax-addass 11269  ax-mulass 11270  ax-distr 11271  ax-i2m1 11272  ax-1ne0 11273  ax-1rid 11274  ax-rnegex 11275  ax-rrecex 11276  ax-cnre 11277  ax-pre-lttri 11278  ax-pre-lttrn 11279  ax-pre-ltadd 11280  ax-pre-mulgt0 11281
This proof depends on definitions:  df-bi 210  df-an 402  df-or 862  df-3or 1104  df-3an 1105  df-tru 1572  df-fal 1582  df-ex 1812  df-nf 1816  df-sb 2099  df-mo 2564  df-eu 2594  df-clab 2739  df-cleq 2752  df-clel 2835  df-nfc 2909  df-ne 2956  df-nel 3062  df-ral 3077  df-rex 3087  df-rmo 3365  df-reu 3366  df-rab 3413  df-v 3452  df-sbc 3739  df-csb 3847  df-ss 3896  df-pss 4014  df-dif 4047  df-in 4091  df-un 4151  df-nul 4279  df-if 4482  df-pw 4558  df-sn 4585  df-pr 4587  df-tp 4589  df-op 4835  df-uni 4867  df-iun 4952  df-br 5103  df-opab 5167  df-mpt 5186  df-tr 5212  df-id 5545  df-eprel 5550  df-po 5558  df-so 5559  df-fr 5603  df-we 5605  df-xp 5656  df-rel 5657  df-cnv 5658  df-co 5659  df-dm 5660  df-rn 5661  df-res 5662  df-ima 5663  df-pred 6304  df-ord 6365  df-on 6366  df-lim 6367  df-suc 6368  df-iota 6494  df-fun 6541  df-fn 6542  df-f 6543  df-f1 6544  df-fo 6545  df-f1o 6546  df-fv 6547  df-riota 7378  df-ov 7424  df-oprab 7425  df-mpo 7426  df-of 7694  df-om 7879  df-1st 8002  df-2nd 8003  df-frecs 8303  df-wrecs 8334  df-recs 8383  df-rdg 8422  df-1o 8480  df-er 8721  df-map 8853  df-en 8978  df-dom 8979  df-sdom 8980  df-fin 8981  df-pnf 11349  df-mnf 11350  df-xr 11351  df-ltxr 11352  df-le 11353  df-sub 11547  df-neg 11548  df-nn 12340  df-2 12409  df-3 12410  df-4 12411  df-5 12412  df-6 12413  df-n0 12611  df-z 12698  df-uz 12970  df-fz 13644  df-struct 17331  df-sets 17348  df-slot 17366  df-ndx 17378  df-base 17394  df-plusg 17447  df-mulr 17448  df-sca 17450  df-vsca 17451  df-0g 17618  df-mgm 18822  df-sgrp 18914  df-mnd 18930  df-mhm 18984  df-grp 19153  df-minusg 19154  df-ghm 19434  df-cmn 20002  df-abl 20003  df-mgp 20367  df-rng 20381  df-ur 20414  df-ring 20467  df-lmod 21143  df-lmhm 21303  df-mend 44268
This theorem is used by:  mendlmod  44285  mendassa  44286
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