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| Mirrors > Home > MPE Home > Th. List > fulli | Structured version Visualization version GIF version | ||
| Description: The morphism map of a full functor is a surjection. (Contributed by Mario Carneiro, 27-Jan-2017.) |
| Ref | Expression |
|---|---|
| isfull.b | ⊢ 𝐵 = (Base‘𝐶) |
| isfull.j | ⊢ 𝐽 = (Hom ‘𝐷) |
| isfull.h | ⊢ 𝐻 = (Hom ‘𝐶) |
| fullfo.f | ⊢ (𝜑 → 𝐹(𝐶 Full 𝐷)𝐺) |
| fullfo.x | ⊢ (𝜑 → 𝑋 ∈ 𝐵) |
| fullfo.y | ⊢ (𝜑 → 𝑌 ∈ 𝐵) |
| fulli.r | ⊢ (𝜑 → 𝑅 ∈ ((𝐹‘𝑋)𝐽(𝐹‘𝑌))) |
| Ref | Expression |
|---|---|
| fulli | ⊢ (𝜑 → ∃𝑓 ∈ (𝑋𝐻𝑌)𝑅 = ((𝑋𝐺𝑌)‘𝑓)) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | isfull.b | . . 3 ⊢ 𝐵 = (Base‘𝐶) | |
| 2 | isfull.j | . . 3 ⊢ 𝐽 = (Hom ‘𝐷) | |
| 3 | isfull.h | . . 3 ⊢ 𝐻 = (Hom ‘𝐶) | |
| 4 | fullfo.f | . . 3 ⊢ (𝜑 → 𝐹(𝐶 Full 𝐷)𝐺) | |
| 5 | fullfo.x | . . 3 ⊢ (𝜑 → 𝑋 ∈ 𝐵) | |
| 6 | fullfo.y | . . 3 ⊢ (𝜑 → 𝑌 ∈ 𝐵) | |
| 7 | 1, 2, 3, 4, 5, 6 | fullfo 18098 | . 2 ⊢ (𝜑 → (𝑋𝐺𝑌):(𝑋𝐻𝑌)–onto→((𝐹‘𝑋)𝐽(𝐹‘𝑌))) |
| 8 | fulli.r | . 2 ⊢ (𝜑 → 𝑅 ∈ ((𝐹‘𝑋)𝐽(𝐹‘𝑌))) | |
| 9 | foelrn 7112 | . 2 ⊢ (((𝑋𝐺𝑌):(𝑋𝐻𝑌)–onto→((𝐹‘𝑋)𝐽(𝐹‘𝑌)) ∧ 𝑅 ∈ ((𝐹‘𝑋)𝐽(𝐹‘𝑌))) → ∃𝑓 ∈ (𝑋𝐻𝑌)𝑅 = ((𝑋𝐺𝑌)‘𝑓)) | |
| 10 | 7, 8, 9 | syl2anc 596 | 1 ⊢ (𝜑 → ∃𝑓 ∈ (𝑋𝐻𝑌)𝑅 = ((𝑋𝐺𝑌)‘𝑓)) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: → wi 4 = wceq 1569 ∈ wcel 2144 ∃wrex 3086 class class class wbr 5102 –onto→wfo 6541 ‘cfv 6543 (class class class)co 7424 Basecbs 17396 Hom chom 17448 Full cful 18088 |
| 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 5327 ax-pr 5391 ax-un 7755 |
| This proof depends on definitions: df-bi 210 df-an 402 df-or 862 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-ral 3077 df-rex 3087 df-rab 3413 df-v 3452 df-sbc 3739 df-csb 3848 df-ss 3897 df-dif 4046 df-in 4090 df-un 4150 df-nul 4278 df-if 4482 df-pw 4558 df-sn 4585 df-pr 4587 df-op 4835 df-uni 4867 df-iun 4952 df-br 5103 df-opab 5167 df-mpt 5186 df-id 5546 df-xp 5657 df-rel 5658 df-cnv 5659 df-co 5660 df-dm 5661 df-rn 5662 df-res 5663 df-ima 5664 df-iota 6497 df-fun 6545 df-fn 6546 df-f 6547 df-fo 6549 df-fv 6551 df-ov 7427 df-oprab 7428 df-mpo 7429 df-1st 8005 df-2nd 8006 df-map 8856 df-ixp 8933 df-func 18042 df-full 18090 |
| This theorem is used by: ffthiso 18115 |
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