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Mirrors > Home > MPE Home > Th. List > Mathboxes > funcringcsetcALTV2lem1 | Structured version Visualization version GIF version |
Description: Lemma 1 for funcringcsetcALTV2 44336. (Contributed by AV, 15-Feb-2020.) (New usage is discouraged.) |
Ref | Expression |
---|---|
funcringcsetcALTV2.r | ⊢ 𝑅 = (RingCat‘𝑈) |
funcringcsetcALTV2.s | ⊢ 𝑆 = (SetCat‘𝑈) |
funcringcsetcALTV2.b | ⊢ 𝐵 = (Base‘𝑅) |
funcringcsetcALTV2.c | ⊢ 𝐶 = (Base‘𝑆) |
funcringcsetcALTV2.u | ⊢ (𝜑 → 𝑈 ∈ WUni) |
funcringcsetcALTV2.f | ⊢ (𝜑 → 𝐹 = (𝑥 ∈ 𝐵 ↦ (Base‘𝑥))) |
Ref | Expression |
---|---|
funcringcsetcALTV2lem1 | ⊢ ((𝜑 ∧ 𝑋 ∈ 𝐵) → (𝐹‘𝑋) = (Base‘𝑋)) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | funcringcsetcALTV2.f | . . 3 ⊢ (𝜑 → 𝐹 = (𝑥 ∈ 𝐵 ↦ (Base‘𝑥))) | |
2 | 1 | adantr 483 | . 2 ⊢ ((𝜑 ∧ 𝑋 ∈ 𝐵) → 𝐹 = (𝑥 ∈ 𝐵 ↦ (Base‘𝑥))) |
3 | fveq2 6670 | . . 3 ⊢ (𝑥 = 𝑋 → (Base‘𝑥) = (Base‘𝑋)) | |
4 | 3 | adantl 484 | . 2 ⊢ (((𝜑 ∧ 𝑋 ∈ 𝐵) ∧ 𝑥 = 𝑋) → (Base‘𝑥) = (Base‘𝑋)) |
5 | simpr 487 | . 2 ⊢ ((𝜑 ∧ 𝑋 ∈ 𝐵) → 𝑋 ∈ 𝐵) | |
6 | fvexd 6685 | . 2 ⊢ ((𝜑 ∧ 𝑋 ∈ 𝐵) → (Base‘𝑋) ∈ V) | |
7 | 2, 4, 5, 6 | fvmptd 6775 | 1 ⊢ ((𝜑 ∧ 𝑋 ∈ 𝐵) → (𝐹‘𝑋) = (Base‘𝑋)) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ∧ wa 398 = wceq 1537 ∈ wcel 2114 Vcvv 3494 ↦ cmpt 5146 ‘cfv 6355 WUnicwun 10122 Basecbs 16483 SetCatcsetc 17335 RingCatcringc 44294 |
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-sep 5203 ax-nul 5210 ax-pr 5330 |
This theorem depends on definitions: df-bi 209 df-an 399 df-or 844 df-3an 1085 df-tru 1540 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-ral 3143 df-rex 3144 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-nul 4292 df-if 4468 df-sn 4568 df-pr 4570 df-op 4574 df-uni 4839 df-br 5067 df-opab 5129 df-mpt 5147 df-id 5460 df-xp 5561 df-rel 5562 df-cnv 5563 df-co 5564 df-dm 5565 df-iota 6314 df-fun 6357 df-fv 6363 |
This theorem is referenced by: funcringcsetcALTV2lem2 44328 funcringcsetcALTV2lem7 44333 funcringcsetcALTV2lem8 44334 funcringcsetcALTV2lem9 44335 |
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