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| Mirrors > Home > MPE Home > Th. List > isfull2 | Structured version Visualization version GIF version | ||
| Description: Equivalent condition for a full functor. (Contributed by Mario Carneiro, 27-Jan-2017.) |
| Ref | Expression |
|---|---|
| isfull.b | ⊢ 𝐵 = (Base‘𝐶) |
| isfull.j | ⊢ 𝐽 = (Hom ‘𝐷) |
| isfull.h | ⊢ 𝐻 = (Hom ‘𝐶) |
| Ref | Expression |
|---|---|
| isfull2 | ⊢ (𝐹(𝐶 Full 𝐷)𝐺 ↔ (𝐹(𝐶 Func 𝐷)𝐺 ∧ ∀𝑥 ∈ 𝐵 ∀𝑦 ∈ 𝐵 (𝑥𝐺𝑦):(𝑥𝐻𝑦)–onto→((𝐹‘𝑥)𝐽(𝐹‘𝑦)))) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | isfull.b | . . 3 ⊢ 𝐵 = (Base‘𝐶) | |
| 2 | isfull.j | . . 3 ⊢ 𝐽 = (Hom ‘𝐷) | |
| 3 | 1, 2 | isfull 18004 | . 2 ⊢ (𝐹(𝐶 Full 𝐷)𝐺 ↔ (𝐹(𝐶 Func 𝐷)𝐺 ∧ ∀𝑥 ∈ 𝐵 ∀𝑦 ∈ 𝐵 ran (𝑥𝐺𝑦) = ((𝐹‘𝑥)𝐽(𝐹‘𝑦)))) |
| 4 | isfull.h | . . . . . . 7 ⊢ 𝐻 = (Hom ‘𝐶) | |
| 5 | simpll 779 | . . . . . . 7 ⊢ (((𝐹(𝐶 Func 𝐷)𝐺 ∧ 𝑥 ∈ 𝐵) ∧ 𝑦 ∈ 𝐵) → 𝐹(𝐶 Func 𝐷)𝐺) | |
| 6 | simplr 781 | . . . . . . 7 ⊢ (((𝐹(𝐶 Func 𝐷)𝐺 ∧ 𝑥 ∈ 𝐵) ∧ 𝑦 ∈ 𝐵) → 𝑥 ∈ 𝐵) | |
| 7 | simpr 490 | . . . . . . 7 ⊢ (((𝐹(𝐶 Func 𝐷)𝐺 ∧ 𝑥 ∈ 𝐵) ∧ 𝑦 ∈ 𝐵) → 𝑦 ∈ 𝐵) | |
| 8 | 1, 4, 2, 5, 6, 7 | funcf2 17960 | . . . . . 6 ⊢ (((𝐹(𝐶 Func 𝐷)𝐺 ∧ 𝑥 ∈ 𝐵) ∧ 𝑦 ∈ 𝐵) → (𝑥𝐺𝑦):(𝑥𝐻𝑦)⟶((𝐹‘𝑥)𝐽(𝐹‘𝑦))) |
| 9 | ffn 6703 | . . . . . 6 ⊢ ((𝑥𝐺𝑦):(𝑥𝐻𝑦)⟶((𝐹‘𝑥)𝐽(𝐹‘𝑦)) → (𝑥𝐺𝑦) Fn (𝑥𝐻𝑦)) | |
| 10 | df-fo 6539 | . . . . . . 7 ⊢ ((𝑥𝐺𝑦):(𝑥𝐻𝑦)–onto→((𝐹‘𝑥)𝐽(𝐹‘𝑦)) ↔ ((𝑥𝐺𝑦) Fn (𝑥𝐻𝑦) ∧ ran (𝑥𝐺𝑦) = ((𝐹‘𝑥)𝐽(𝐹‘𝑦)))) | |
| 11 | 10 | baib 545 | . . . . . 6 ⊢ ((𝑥𝐺𝑦) Fn (𝑥𝐻𝑦) → ((𝑥𝐺𝑦):(𝑥𝐻𝑦)–onto→((𝐹‘𝑥)𝐽(𝐹‘𝑦)) ↔ ran (𝑥𝐺𝑦) = ((𝐹‘𝑥)𝐽(𝐹‘𝑦)))) |
| 12 | 8, 9, 11 | 3syl 19 | . . . . 5 ⊢ (((𝐹(𝐶 Func 𝐷)𝐺 ∧ 𝑥 ∈ 𝐵) ∧ 𝑦 ∈ 𝐵) → ((𝑥𝐺𝑦):(𝑥𝐻𝑦)–onto→((𝐹‘𝑥)𝐽(𝐹‘𝑦)) ↔ ran (𝑥𝐺𝑦) = ((𝐹‘𝑥)𝐽(𝐹‘𝑦)))) |
| 13 | 12 | ralbidva 3183 | . . . 4 ⊢ ((𝐹(𝐶 Func 𝐷)𝐺 ∧ 𝑥 ∈ 𝐵) → (∀𝑦 ∈ 𝐵 (𝑥𝐺𝑦):(𝑥𝐻𝑦)–onto→((𝐹‘𝑥)𝐽(𝐹‘𝑦)) ↔ ∀𝑦 ∈ 𝐵 ran (𝑥𝐺𝑦) = ((𝐹‘𝑥)𝐽(𝐹‘𝑦)))) |
| 14 | 13 | ralbidva 3183 | . . 3 ⊢ (𝐹(𝐶 Func 𝐷)𝐺 → (∀𝑥 ∈ 𝐵 ∀𝑦 ∈ 𝐵 (𝑥𝐺𝑦):(𝑥𝐻𝑦)–onto→((𝐹‘𝑥)𝐽(𝐹‘𝑦)) ↔ ∀𝑥 ∈ 𝐵 ∀𝑦 ∈ 𝐵 ran (𝑥𝐺𝑦) = ((𝐹‘𝑥)𝐽(𝐹‘𝑦)))) |
| 15 | 14 | pm5.32i 585 | . 2 ⊢ ((𝐹(𝐶 Func 𝐷)𝐺 ∧ ∀𝑥 ∈ 𝐵 ∀𝑦 ∈ 𝐵 (𝑥𝐺𝑦):(𝑥𝐻𝑦)–onto→((𝐹‘𝑥)𝐽(𝐹‘𝑦))) ↔ (𝐹(𝐶 Func 𝐷)𝐺 ∧ ∀𝑥 ∈ 𝐵 ∀𝑦 ∈ 𝐵 ran (𝑥𝐺𝑦) = ((𝐹‘𝑥)𝐽(𝐹‘𝑦)))) |
| 16 | 3, 15 | bitr4i 281 | 1 ⊢ (𝐹(𝐶 Full 𝐷)𝐺 ↔ (𝐹(𝐶 Func 𝐷)𝐺 ∧ ∀𝑥 ∈ 𝐵 ∀𝑦 ∈ 𝐵 (𝑥𝐺𝑦):(𝑥𝐻𝑦)–onto→((𝐹‘𝑥)𝐽(𝐹‘𝑦)))) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: ↔ wb 209 ∧ wa 401 = wceq 1570 ∈ wcel 2145 ∀wral 3076 class class class wbr 5103 ran crn 5656 Fn wfn 6528 ⟶wf 6529 –onto→wfo 6531 ‘cfv 6533 (class class class)co 7414 Basecbs 17304 Hom chom 17356 Func cfunc 17946 Full cful 17996 |
| 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 2732 ax-rep 5232 ax-sep 5251 ax-nul 5263 ax-pow 5330 ax-pr 5398 ax-un 7737 |
| This proof depends on definitions: df-bi 210 df-an 402 df-or 862 df-3an 1105 df-tru 1573 df-fal 1583 df-ex 1813 df-nf 1817 df-sb 2100 df-mo 2564 df-eu 2594 df-clab 2739 df-cleq 2752 df-clel 2835 df-nfc 2909 df-ne 2956 df-ral 3077 df-rex 3087 df-rab 3413 df-v 3452 df-sbc 3740 df-csb 3848 df-dif 3902 df-un 3904 df-in 3906 df-ss 3916 df-nul 4280 df-if 4483 df-pw 4559 df-sn 4585 df-pr 4587 df-op 4591 df-uni 4868 df-iun 4953 df-br 5104 df-opab 5168 df-mpt 5187 df-id 5550 df-xp 5661 df-rel 5662 df-cnv 5663 df-co 5664 df-dm 5665 df-rn 5666 df-res 5667 df-ima 5668 df-iota 6489 df-fun 6535 df-fn 6536 df-f 6537 df-fo 6539 df-fv 6541 df-ov 7417 df-oprab 7418 df-mpo 7419 df-1st 7987 df-2nd 7988 df-map 8831 df-ixp 8908 df-func 17950 df-full 17998 |
| This theorem is used by: fullfo 18006 isffth2 18010 cofull 18028 fullestrcsetc 18242 fullsetcestrc 18257 fullthinc 50379 |
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