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| Mirrors > Home > MPE Home > Th. List > Mathboxes > termfucterm | Structured version Visualization version GIF version | ||
| Description: All functors between two terminal categories are isomorphisms. (Contributed by Zhi Wang, 17-Nov-2025.) |
| Ref | Expression |
|---|---|
| termfucterm.c | ⊢ 𝐶 = (CatCat‘𝑈) |
| termfucterm.b | ⊢ 𝐵 = (Base‘𝐶) |
| termfucterm.i | ⊢ 𝐼 = (Iso‘𝐶) |
| termfucterm.x | ⊢ (𝜑 → 𝑋 ∈ 𝐵) |
| termfucterm.xt | ⊢ (𝜑 → 𝑋 ∈ TermCat) |
| termfucterm.y | ⊢ (𝜑 → 𝑌 ∈ 𝐵) |
| termfucterm.yt | ⊢ (𝜑 → 𝑌 ∈ TermCat) |
| Ref | Expression |
|---|---|
| termfucterm | ⊢ (𝜑 → (𝑋 Func 𝑌) = (𝑋𝐼𝑌)) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | termfucterm.yt | . . . . . . 7 ⊢ (𝜑 → 𝑌 ∈ TermCat) | |
| 2 | termfucterm.c | . . . . . . . 8 ⊢ 𝐶 = (CatCat‘𝑈) | |
| 3 | termfucterm.b | . . . . . . . 8 ⊢ 𝐵 = (Base‘𝐶) | |
| 4 | termfucterm.x | . . . . . . . 8 ⊢ (𝜑 → 𝑋 ∈ 𝐵) | |
| 5 | termfucterm.y | . . . . . . . 8 ⊢ (𝜑 → 𝑌 ∈ 𝐵) | |
| 6 | termfucterm.xt | . . . . . . . 8 ⊢ (𝜑 → 𝑋 ∈ TermCat) | |
| 7 | 2, 3, 4, 5, 6 | termcciso 50277 | . . . . . . 7 ⊢ (𝜑 → (𝑌 ∈ TermCat ↔ 𝑋( ≃𝑐 ‘𝐶)𝑌)) |
| 8 | 1, 7 | mpbid 235 | . . . . . 6 ⊢ (𝜑 → 𝑋( ≃𝑐 ‘𝐶)𝑌) |
| 9 | termfucterm.i | . . . . . . 7 ⊢ 𝐼 = (Iso‘𝐶) | |
| 10 | cicrcl2 49804 | . . . . . . . 8 ⊢ (𝑋( ≃𝑐 ‘𝐶)𝑌 → 𝐶 ∈ Cat) | |
| 11 | 8, 10 | syl 18 | . . . . . . 7 ⊢ (𝜑 → 𝐶 ∈ Cat) |
| 12 | 9, 3, 11, 4, 5 | cic 17857 | . . . . . 6 ⊢ (𝜑 → (𝑋( ≃𝑐 ‘𝐶)𝑌 ↔ ∃𝑔 𝑔 ∈ (𝑋𝐼𝑌))) |
| 13 | 8, 12 | mpbid 235 | . . . . 5 ⊢ (𝜑 → ∃𝑔 𝑔 ∈ (𝑋𝐼𝑌)) |
| 14 | 13 | adantr 485 | . . . 4 ⊢ ((𝜑 ∧ 𝑓 ∈ (𝑋 Func 𝑌)) → ∃𝑔 𝑔 ∈ (𝑋𝐼𝑌)) |
| 15 | eqid 2763 | . . . . . . . 8 ⊢ (𝑋 FuncCat 𝑌) = (𝑋 FuncCat 𝑌) | |
| 16 | 6 | termccd 50240 | . . . . . . . 8 ⊢ (𝜑 → 𝑋 ∈ Cat) |
| 17 | 15, 16, 1 | fucterm 50303 | . . . . . . 7 ⊢ (𝜑 → (𝑋 FuncCat 𝑌) ∈ TermCat) |
| 18 | 17 | ad2antrr 738 | . . . . . 6 ⊢ (((𝜑 ∧ 𝑓 ∈ (𝑋 Func 𝑌)) ∧ 𝑔 ∈ (𝑋𝐼𝑌)) → (𝑋 FuncCat 𝑌) ∈ TermCat) |
| 19 | 15 | fucbas 18021 | . . . . . 6 ⊢ (𝑋 Func 𝑌) = (Base‘(𝑋 FuncCat 𝑌)) |
| 20 | simplr 780 | . . . . . 6 ⊢ (((𝜑 ∧ 𝑓 ∈ (𝑋 Func 𝑌)) ∧ 𝑔 ∈ (𝑋𝐼𝑌)) → 𝑓 ∈ (𝑋 Func 𝑌)) | |
| 21 | fullfunc 17966 | . . . . . . 7 ⊢ (𝑋 Full 𝑌) ⊆ (𝑋 Func 𝑌) | |
| 22 | eqid 2763 | . . . . . . . . . 10 ⊢ (Base‘𝑋) = (Base‘𝑋) | |
| 23 | eqid 2763 | . . . . . . . . . 10 ⊢ (Base‘𝑌) = (Base‘𝑌) | |
| 24 | simpr 489 | . . . . . . . . . 10 ⊢ (((𝜑 ∧ 𝑓 ∈ (𝑋 Func 𝑌)) ∧ 𝑔 ∈ (𝑋𝐼𝑌)) → 𝑔 ∈ (𝑋𝐼𝑌)) | |
| 25 | 2, 22, 23, 9, 24 | catcisoi 50161 | . . . . . . . . 9 ⊢ (((𝜑 ∧ 𝑓 ∈ (𝑋 Func 𝑌)) ∧ 𝑔 ∈ (𝑋𝐼𝑌)) → (𝑔 ∈ ((𝑋 Full 𝑌) ∩ (𝑋 Faith 𝑌)) ∧ (1st ‘𝑔):(Base‘𝑋)–1-1-onto→(Base‘𝑌))) |
| 26 | 25 | simpld 499 | . . . . . . . 8 ⊢ (((𝜑 ∧ 𝑓 ∈ (𝑋 Func 𝑌)) ∧ 𝑔 ∈ (𝑋𝐼𝑌)) → 𝑔 ∈ ((𝑋 Full 𝑌) ∩ (𝑋 Faith 𝑌))) |
| 27 | 26 | elin1d 4158 | . . . . . . 7 ⊢ (((𝜑 ∧ 𝑓 ∈ (𝑋 Func 𝑌)) ∧ 𝑔 ∈ (𝑋𝐼𝑌)) → 𝑔 ∈ (𝑋 Full 𝑌)) |
| 28 | 21, 27 | sselid 3936 | . . . . . 6 ⊢ (((𝜑 ∧ 𝑓 ∈ (𝑋 Func 𝑌)) ∧ 𝑔 ∈ (𝑋𝐼𝑌)) → 𝑔 ∈ (𝑋 Func 𝑌)) |
| 29 | 18, 19, 20, 28 | termcbasmo 50244 | . . . . 5 ⊢ (((𝜑 ∧ 𝑓 ∈ (𝑋 Func 𝑌)) ∧ 𝑔 ∈ (𝑋𝐼𝑌)) → 𝑓 = 𝑔) |
| 30 | 29, 24 | eqeltrd 2863 | . . . 4 ⊢ (((𝜑 ∧ 𝑓 ∈ (𝑋 Func 𝑌)) ∧ 𝑔 ∈ (𝑋𝐼𝑌)) → 𝑓 ∈ (𝑋𝐼𝑌)) |
| 31 | 14, 30 | exlimddv 1965 | . . 3 ⊢ ((𝜑 ∧ 𝑓 ∈ (𝑋 Func 𝑌)) → 𝑓 ∈ (𝑋𝐼𝑌)) |
| 32 | simpr 489 | . . . . . . 7 ⊢ ((𝜑 ∧ 𝑓 ∈ (𝑋𝐼𝑌)) → 𝑓 ∈ (𝑋𝐼𝑌)) | |
| 33 | 2, 22, 23, 9, 32 | catcisoi 50161 | . . . . . 6 ⊢ ((𝜑 ∧ 𝑓 ∈ (𝑋𝐼𝑌)) → (𝑓 ∈ ((𝑋 Full 𝑌) ∩ (𝑋 Faith 𝑌)) ∧ (1st ‘𝑓):(Base‘𝑋)–1-1-onto→(Base‘𝑌))) |
| 34 | 33 | simpld 499 | . . . . 5 ⊢ ((𝜑 ∧ 𝑓 ∈ (𝑋𝐼𝑌)) → 𝑓 ∈ ((𝑋 Full 𝑌) ∩ (𝑋 Faith 𝑌))) |
| 35 | 34 | elin1d 4158 | . . . 4 ⊢ ((𝜑 ∧ 𝑓 ∈ (𝑋𝐼𝑌)) → 𝑓 ∈ (𝑋 Full 𝑌)) |
| 36 | 21, 35 | sselid 3936 | . . 3 ⊢ ((𝜑 ∧ 𝑓 ∈ (𝑋𝐼𝑌)) → 𝑓 ∈ (𝑋 Func 𝑌)) |
| 37 | 31, 36 | impbida 812 | . 2 ⊢ (𝜑 → (𝑓 ∈ (𝑋 Func 𝑌) ↔ 𝑓 ∈ (𝑋𝐼𝑌))) |
| 38 | 37 | eqrdv 2761 | 1 ⊢ (𝜑 → (𝑋 Func 𝑌) = (𝑋𝐼𝑌)) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ∧ wa 400 = wceq 1570 ∃wex 1809 ∈ wcel 2143 ∩ cin 3905 class class class wbr 5110 –1-1-onto→wf1o 6537 ‘cfv 6538 (class class class)co 7412 1st c1st 7985 Basecbs 17270 Catccat 17721 Isociso 17804 ≃𝑐 ccic 17853 Func cfunc 17912 Full cful 17962 Faith cfth 17963 FuncCat cfuc 18003 CatCatccatc 18156 TermCatctermc 50233 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1825 ax-4 1839 ax-5 1940 ax-6 1997 ax-7 2038 ax-8 2145 ax-9 2153 ax-10 2176 ax-11 2192 ax-12 2213 ax-ext 2735 ax-rep 5239 ax-sep 5258 ax-nul 5270 ax-pow 5338 ax-pr 5406 ax-un 7734 ax-cnex 11157 ax-resscn 11158 ax-1cn 11159 ax-icn 11160 ax-addcl 11161 ax-addrcl 11162 ax-mulcl 11163 ax-mulrcl 11164 ax-mulcom 11165 ax-addass 11166 ax-mulass 11167 ax-distr 11168 ax-i2m1 11169 ax-1ne0 11170 ax-1rid 11171 ax-rnegex 11172 ax-rrecex 11173 ax-cnre 11174 ax-pre-lttri 11175 ax-pre-lttrn 11176 ax-pre-ltadd 11177 ax-pre-mulgt0 11178 |
| This theorem depends on definitions: df-bi 210 df-an 401 df-or 861 df-3or 1104 df-3an 1105 df-tru 1573 df-fal 1583 df-ex 1810 df-nf 1814 df-sb 2097 df-mo 2567 df-eu 2597 df-clab 2742 df-cleq 2755 df-clel 2838 df-nfc 2912 df-ne 2959 df-nel 3065 df-ral 3080 df-rex 3090 df-rmo 3369 df-reu 3370 df-rab 3417 df-v 3457 df-sbc 3746 df-csb 3855 df-dif 3909 df-un 3911 df-in 3913 df-ss 3923 df-pss 3926 df-nul 4288 df-if 4489 df-pw 4565 df-sn 4591 df-pr 4593 df-tp 4595 df-op 4597 df-uni 4874 df-iun 4959 df-br 5111 df-opab 5175 df-mpt 5194 df-tr 5220 df-id 5558 df-eprel 5563 df-po 5571 df-so 5572 df-fr 5616 df-we 5618 df-xp 5669 df-rel 5670 df-cnv 5671 df-co 5672 df-dm 5673 df-rn 5674 df-res 5675 df-ima 5676 df-pred 6304 df-ord 6365 df-on 6366 df-lim 6367 df-suc 6368 df-iota 6494 df-fun 6540 df-fn 6541 df-f 6542 df-f1 6543 df-fo 6544 df-f1o 6545 df-fv 6546 df-riota 7369 df-ov 7415 df-oprab 7416 df-mpo 7417 df-om 7864 df-1st 7987 df-2nd 7988 df-supp 8158 df-tpos 8223 df-frecs 8279 df-wrecs 8310 df-recs 8359 df-rdg 8398 df-1o 8454 df-er 8695 df-map 8827 df-ixp 8897 df-en 8945 df-dom 8946 df-sdom 8947 df-fin 8948 df-pnf 11246 df-mnf 11247 df-xr 11248 df-ltxr 11249 df-le 11250 df-sub 11444 df-neg 11445 df-nn 12235 df-2 12304 df-3 12305 df-4 12306 df-5 12307 df-6 12308 df-7 12309 df-8 12310 df-9 12311 df-n0 12506 df-z 12593 df-dec 12713 df-uz 12864 df-fz 13537 df-struct 17208 df-sets 17225 df-slot 17243 df-ndx 17255 df-base 17271 df-hom 17335 df-cco 17336 df-cat 17725 df-cid 17726 df-homf 17727 df-comf 17728 df-oppc 17769 df-sect 17805 df-inv 17806 df-iso 17807 df-cic 17854 df-func 17916 df-idfu 17917 df-cofu 17918 df-full 17964 df-fth 17965 df-nat 18004 df-fuc 18005 df-inito 18042 df-termo 18043 df-catc 18157 df-thinc 50179 df-termc 50234 |
| This theorem is referenced by: (None) |
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