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| Mirrors > Home > MPE Home > Th. List > ffthf1o | Structured version Visualization version GIF version | ||
| Description: The morphism map of a fully faithful functor is a bijection. (Contributed by Mario Carneiro, 29-Jan-2017.) |
| Ref | Expression |
|---|---|
| isfth.b | ⊢ 𝐵 = (Base‘𝐶) |
| isfth.h | ⊢ 𝐻 = (Hom ‘𝐶) |
| isfth.j | ⊢ 𝐽 = (Hom ‘𝐷) |
| ffthf1o.f | ⊢ (𝜑 → 𝐹((𝐶 Full 𝐷) ∩ (𝐶 Faith 𝐷))𝐺) |
| ffthf1o.x | ⊢ (𝜑 → 𝑋 ∈ 𝐵) |
| ffthf1o.y | ⊢ (𝜑 → 𝑌 ∈ 𝐵) |
| Ref | Expression |
|---|---|
| ffthf1o | ⊢ (𝜑 → (𝑋𝐺𝑌):(𝑋𝐻𝑌)–1-1-onto→((𝐹‘𝑋)𝐽(𝐹‘𝑌))) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | isfth.b | . . 3 ⊢ 𝐵 = (Base‘𝐶) | |
| 2 | isfth.h | . . 3 ⊢ 𝐻 = (Hom ‘𝐶) | |
| 3 | isfth.j | . . 3 ⊢ 𝐽 = (Hom ‘𝐷) | |
| 4 | ffthf1o.f | . . . . 5 ⊢ (𝜑 → 𝐹((𝐶 Full 𝐷) ∩ (𝐶 Faith 𝐷))𝐺) | |
| 5 | brin 5124 | . . . . 5 ⊢ (𝐹((𝐶 Full 𝐷) ∩ (𝐶 Faith 𝐷))𝐺 ↔ (𝐹(𝐶 Full 𝐷)𝐺 ∧ 𝐹(𝐶 Faith 𝐷)𝐺)) | |
| 6 | 4, 5 | sylib 219 | . . . 4 ⊢ (𝜑 → (𝐹(𝐶 Full 𝐷)𝐺 ∧ 𝐹(𝐶 Faith 𝐷)𝐺)) |
| 7 | 6 | simprd 496 | . . 3 ⊢ (𝜑 → 𝐹(𝐶 Faith 𝐷)𝐺) |
| 8 | ffthf1o.x | . . 3 ⊢ (𝜑 → 𝑋 ∈ 𝐵) | |
| 9 | ffthf1o.y | . . 3 ⊢ (𝜑 → 𝑌 ∈ 𝐵) | |
| 10 | 1, 2, 3, 7, 8, 9 | fthf1 17877 | . 2 ⊢ (𝜑 → (𝑋𝐺𝑌):(𝑋𝐻𝑌)–1-1→((𝐹‘𝑋)𝐽(𝐹‘𝑌))) |
| 11 | 6 | simpld 495 | . . 3 ⊢ (𝜑 → 𝐹(𝐶 Full 𝐷)𝐺) |
| 12 | 1, 3, 2, 11, 8, 9 | fullfo 17872 | . 2 ⊢ (𝜑 → (𝑋𝐺𝑌):(𝑋𝐻𝑌)–onto→((𝐹‘𝑋)𝐽(𝐹‘𝑌))) |
| 13 | df-f1o 6492 | . 2 ⊢ ((𝑋𝐺𝑌):(𝑋𝐻𝑌)–1-1-onto→((𝐹‘𝑋)𝐽(𝐹‘𝑌)) ↔ ((𝑋𝐺𝑌):(𝑋𝐻𝑌)–1-1→((𝐹‘𝑋)𝐽(𝐹‘𝑌)) ∧ (𝑋𝐺𝑌):(𝑋𝐻𝑌)–onto→((𝐹‘𝑋)𝐽(𝐹‘𝑌)))) | |
| 14 | 10, 12, 13 | sylanbrc 589 | 1 ⊢ (𝜑 → (𝑋𝐺𝑌):(𝑋𝐻𝑌)–1-1-onto→((𝐹‘𝑋)𝐽(𝐹‘𝑌))) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ∧ wa 396 = wceq 1547 ∈ wcel 2119 ∩ cin 3882 class class class wbr 5072 –1-1→wf1 6482 –onto→wfo 6483 –1-1-onto→wf1o 6484 ‘cfv 6485 (class class class)co 7356 Basecbs 17170 Hom chom 17222 Full cful 17862 Faith cfth 17863 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1802 ax-4 1816 ax-5 1917 ax-6 1974 ax-7 2015 ax-8 2121 ax-9 2129 ax-10 2152 ax-11 2168 ax-12 2189 ax-ext 2711 ax-rep 5199 ax-sep 5218 ax-nul 5228 ax-pow 5294 ax-pr 5362 ax-un 7678 |
| This theorem depends on definitions: df-bi 208 df-an 397 df-or 854 df-3an 1094 df-tru 1550 df-fal 1560 df-ex 1787 df-nf 1791 df-sb 2074 df-mo 2543 df-eu 2573 df-clab 2718 df-cleq 2731 df-clel 2814 df-nfc 2888 df-ne 2935 df-ral 3054 df-rex 3064 df-rab 3392 df-v 3433 df-sbc 3724 df-csb 3832 df-dif 3886 df-un 3888 df-in 3890 df-ss 3900 df-nul 4262 df-if 4455 df-pw 4531 df-sn 4556 df-pr 4558 df-op 4562 df-uni 4839 df-iun 4923 df-br 5073 df-opab 5135 df-mpt 5154 df-id 5513 df-xp 5624 df-rel 5625 df-cnv 5626 df-co 5627 df-dm 5628 df-rn 5629 df-res 5630 df-ima 5631 df-iota 6441 df-fun 6487 df-fn 6488 df-f 6489 df-f1 6490 df-fo 6491 df-f1o 6492 df-fv 6493 df-ov 7359 df-oprab 7360 df-mpo 7361 df-1st 7931 df-2nd 7932 df-map 8765 df-ixp 8836 df-func 17816 df-full 17864 df-fth 17865 |
| This theorem is referenced by: catcisolem 18068 uptrlem1 49700 uptrar 49706 uptr2 49711 |
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