| Mathbox for Zhi Wang |
< Previous
Next >
Nearby theorems |
||
| Mirrors > Home > MPE Home > Th. List > Mathboxes > par2str | Structured version Visualization version GIF version | ||
| Description: The object set, hom operation, and composition of the concrete two-object parallel-arrow category. (Contributed by Zhi Wang, 14-Sep-2026.) |
| Ref | Expression |
|---|---|
| par2str.c | ⊢ 𝐶 = {〈(Base‘ndx), 2o〉, 〈(Hom ‘ndx), (𝑚 ∈ 2o, 𝑛 ∈ 2o ↦ if(𝑚 = 𝑛, {2o}, if((𝑚 = ∅ ∧ 𝑛 = 1o), 2o, ∅)))〉, 〈(comp‘ndx), (𝑝 ∈ (2o × 2o), 𝑞 ∈ 2o ↦ (𝑟 ∈ 3o, 𝑠 ∈ 3o ↦ (𝑟 ∩ 𝑠)))〉} |
| Ref | Expression |
|---|---|
| par2str | ⊢ (2o = (Base‘𝐶) ∧ (𝑚 ∈ 2o, 𝑛 ∈ 2o ↦ if(𝑚 = 𝑛, {2o}, if((𝑚 = ∅ ∧ 𝑛 = 1o), 2o, ∅))) = (Hom ‘𝐶) ∧ (𝑝 ∈ (2o × 2o), 𝑞 ∈ 2o ↦ (𝑟 ∈ 3o, 𝑠 ∈ 3o ↦ (𝑟 ∩ 𝑠))) = (comp‘𝐶)) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | par2str.c | . . 3 ⊢ 𝐶 = {〈(Base‘ndx), 2o〉, 〈(Hom ‘ndx), (𝑚 ∈ 2o, 𝑛 ∈ 2o ↦ if(𝑚 = 𝑛, {2o}, if((𝑚 = ∅ ∧ 𝑛 = 1o), 2o, ∅)))〉, 〈(comp‘ndx), (𝑝 ∈ (2o × 2o), 𝑞 ∈ 2o ↦ (𝑟 ∈ 3o, 𝑠 ∈ 3o ↦ (𝑟 ∩ 𝑠)))〉} | |
| 2 | 2oex 8490 | . . 3 ⊢ 2o ∈ V | |
| 3 | 1, 2 | catbas 50439 | . 2 ⊢ 2o = (Base‘𝐶) |
| 4 | 2, 2 | mpoex 8092 | . . 3 ⊢ (𝑚 ∈ 2o, 𝑛 ∈ 2o ↦ if(𝑚 = 𝑛, {2o}, if((𝑚 = ∅ ∧ 𝑛 = 1o), 2o, ∅))) ∈ V |
| 5 | 1, 4 | cathomfval 50440 | . 2 ⊢ (𝑚 ∈ 2o, 𝑛 ∈ 2o ↦ if(𝑚 = 𝑛, {2o}, if((𝑚 = ∅ ∧ 𝑛 = 1o), 2o, ∅))) = (Hom ‘𝐶) |
| 6 | 2, 2 | xpex 7767 | . . . 4 ⊢ (2o × 2o) ∈ V |
| 7 | 6, 2 | mpoex 8092 | . . 3 ⊢ (𝑝 ∈ (2o × 2o), 𝑞 ∈ 2o ↦ (𝑟 ∈ 3o, 𝑠 ∈ 3o ↦ (𝑟 ∩ 𝑠))) ∈ V |
| 8 | 1, 7 | catcofval 50441 | . 2 ⊢ (𝑝 ∈ (2o × 2o), 𝑞 ∈ 2o ↦ (𝑟 ∈ 3o, 𝑠 ∈ 3o ↦ (𝑟 ∩ 𝑠))) = (comp‘𝐶) |
| 9 | 3, 5, 8 | 3pm3.2i 1358 | 1 ⊢ (2o = (Base‘𝐶) ∧ (𝑚 ∈ 2o, 𝑛 ∈ 2o ↦ if(𝑚 = 𝑛, {2o}, if((𝑚 = ∅ ∧ 𝑛 = 1o), 2o, ∅))) = (Hom ‘𝐶) ∧ (𝑝 ∈ (2o × 2o), 𝑞 ∈ 2o ↦ (𝑟 ∈ 3o, 𝑠 ∈ 3o ↦ (𝑟 ∩ 𝑠))) = (comp‘𝐶)) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: ∧ wa 401 ∧ w3a 1103 = wceq 1569 ∩ cin 4089 ∅c0 4278 ifcif 4481 {csn 4583 {ctp 4587 〈cop 4589 × cxp 5648 ‘cfv 6538 ∈ cmpo 7422 1oc1o 8471 2oc2o 8472 3oc3o 8473 ndxcnx 17373 Basecbs 17389 Hom chom 17441 compcco 17442 |
| 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 5326 ax-pr 5390 ax-un 7751 ax-cnex 11258 ax-resscn 11259 ax-1cn 11260 ax-icn 11261 ax-addcl 11262 ax-addrcl 11263 ax-mulcl 11264 ax-mulrcl 11265 ax-mulcom 11266 ax-addass 11267 ax-mulass 11268 ax-distr 11269 ax-i2m1 11270 ax-1ne0 11271 ax-1rid 11272 ax-rnegex 11273 ax-rrecex 11274 ax-cnre 11275 ax-pre-lttri 11276 ax-pre-lttrn 11277 ax-pre-ltadd 11278 ax-pre-mulgt0 11279 |
| This proof depends on definitions: df-bi 210 df-an 402 df-or 862 df-3or 1104 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-nel 3062 df-ral 3077 df-rex 3087 df-reu 3366 df-rab 3413 df-v 3452 df-sbc 3739 df-csb 3847 df-ss 3896 df-pss 4014 df-dif 4047 df-in 4091 df-un 4151 df-nul 4279 df-if 4482 df-pw 4558 df-sn 4584 df-pr 4586 df-tp 4588 df-op 4590 df-uni 4867 df-iun 4952 df-br 5103 df-opab 5167 df-mpt 5186 df-tr 5212 df-id 5545 df-eprel 5550 df-po 5558 df-so 5559 df-fr 5603 df-we 5605 df-xp 5656 df-rel 5657 df-cnv 5658 df-co 5659 df-dm 5660 df-rn 5661 df-res 5662 df-ima 5663 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 7377 df-ov 7423 df-oprab 7424 df-mpo 7425 df-om 7878 df-1st 8001 df-2nd 8002 df-frecs 8301 df-wrecs 8332 df-recs 8381 df-rdg 8420 df-1o 8478 df-2o 8479 df-er 8719 df-en 8976 df-dom 8977 df-sdom 8978 df-fin 8979 df-pnf 11347 df-mnf 11348 df-xr 11349 df-ltxr 11350 df-le 11351 df-sub 11545 df-neg 11546 df-nn 12338 df-2 12407 df-3 12408 df-4 12409 df-5 12410 df-6 12411 df-7 12412 df-8 12413 df-9 12414 df-n0 12609 df-z 12696 df-dec 12817 df-uz 12968 df-fz 13642 df-struct 17327 df-slot 17362 df-ndx 17374 df-base 17390 df-hom 17454 df-cco 17455 |
| This theorem is used by: parswapfunc 50869 par2diag 50871 |
| Copyright terms: Public domain | W3C validator |