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Mirrors > Home > MPE Home > Th. List > funcfn2 | Structured version Visualization version GIF version |
Description: The morphism part of a functor is a function. (Contributed by Mario Carneiro, 3-Jan-2017.) |
Ref | Expression |
---|---|
funcfn2.b | ⊢ 𝐵 = (Base‘𝐷) |
funcfn2.f | ⊢ (𝜑 → 𝐹(𝐷 Func 𝐸)𝐺) |
Ref | Expression |
---|---|
funcfn2 | ⊢ (𝜑 → 𝐺 Fn (𝐵 × 𝐵)) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | funcfn2.b | . . 3 ⊢ 𝐵 = (Base‘𝐷) | |
2 | eqid 2610 | . . 3 ⊢ (Hom ‘𝐷) = (Hom ‘𝐷) | |
3 | eqid 2610 | . . 3 ⊢ (Hom ‘𝐸) = (Hom ‘𝐸) | |
4 | funcfn2.f | . . 3 ⊢ (𝜑 → 𝐹(𝐷 Func 𝐸)𝐺) | |
5 | 1, 2, 3, 4 | funcixp 16350 | . 2 ⊢ (𝜑 → 𝐺 ∈ X𝑥 ∈ (𝐵 × 𝐵)(((𝐹‘(1st ‘𝑥))(Hom ‘𝐸)(𝐹‘(2nd ‘𝑥))) ↑𝑚 ((Hom ‘𝐷)‘𝑥))) |
6 | ixpfn 7800 | . 2 ⊢ (𝐺 ∈ X𝑥 ∈ (𝐵 × 𝐵)(((𝐹‘(1st ‘𝑥))(Hom ‘𝐸)(𝐹‘(2nd ‘𝑥))) ↑𝑚 ((Hom ‘𝐷)‘𝑥)) → 𝐺 Fn (𝐵 × 𝐵)) | |
7 | 5, 6 | syl 17 | 1 ⊢ (𝜑 → 𝐺 Fn (𝐵 × 𝐵)) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 = wceq 1475 ∈ wcel 1977 class class class wbr 4583 × cxp 5036 Fn wfn 5799 ‘cfv 5804 (class class class)co 6549 1st c1st 7057 2nd c2nd 7058 ↑𝑚 cmap 7744 Xcixp 7794 Basecbs 15695 Hom chom 15779 Func cfunc 16337 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1713 ax-4 1728 ax-5 1827 ax-6 1875 ax-7 1922 ax-8 1979 ax-9 1986 ax-10 2006 ax-11 2021 ax-12 2034 ax-13 2234 ax-ext 2590 ax-rep 4699 ax-sep 4709 ax-nul 4717 ax-pow 4769 ax-pr 4833 ax-un 6847 |
This theorem depends on definitions: df-bi 196 df-or 384 df-an 385 df-3an 1033 df-tru 1478 df-ex 1696 df-nf 1701 df-sb 1868 df-eu 2462 df-mo 2463 df-clab 2597 df-cleq 2603 df-clel 2606 df-nfc 2740 df-ne 2782 df-ral 2901 df-rex 2902 df-reu 2903 df-rab 2905 df-v 3175 df-sbc 3403 df-csb 3500 df-dif 3543 df-un 3545 df-in 3547 df-ss 3554 df-nul 3875 df-if 4037 df-pw 4110 df-sn 4126 df-pr 4128 df-op 4132 df-uni 4373 df-iun 4457 df-br 4584 df-opab 4644 df-mpt 4645 df-id 4953 df-xp 5044 df-rel 5045 df-cnv 5046 df-co 5047 df-dm 5048 df-rn 5049 df-res 5050 df-ima 5051 df-iota 5768 df-fun 5806 df-fn 5807 df-f 5808 df-f1 5809 df-fo 5810 df-f1o 5811 df-fv 5812 df-ov 6552 df-oprab 6553 df-mpt2 6554 df-map 7746 df-ixp 7795 df-func 16341 |
This theorem is referenced by: funcoppc 16358 cofuval 16365 cofulid 16373 cofurid 16374 prf1st 16667 prf2nd 16668 1st2ndprf 16669 curfuncf 16701 uncfcurf 16702 curf2ndf 16710 |
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