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| Mirrors > Home > MPE Home > Th. List > setc2obas | Structured version Visualization version GIF version | ||
| Description: ∅ and 1o are distinct objects in (SetCat‘2o). This combined with setc2ohom 18250 demonstrates that the category does not have pairwise disjoint hom-sets. See also df-cat 17822 and cat1 18252. (Contributed by Zhi Wang, 24-Sep-2024.) |
| Ref | Expression |
|---|---|
| setc2ohom.c | ⊢ 𝐶 = (SetCat‘2o) |
| setc2obas.b | ⊢ 𝐵 = (Base‘𝐶) |
| Ref | Expression |
|---|---|
| setc2obas | ⊢ (∅ ∈ 𝐵 ∧ 1o ∈ 𝐵 ∧ 1o ≠ ∅) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | 0ex 5261 | . . . 4 ⊢ ∅ ∈ V | |
| 2 | 1 | prid1 4723 | . . 3 ⊢ ∅ ∈ {∅, 1o} |
| 3 | setc2obas.b | . . . 4 ⊢ 𝐵 = (Base‘𝐶) | |
| 4 | setc2ohom.c | . . . . . 6 ⊢ 𝐶 = (SetCat‘2o) | |
| 5 | 2oex 8472 | . . . . . . 7 ⊢ 2o ∈ V | |
| 6 | 5 | a1i 11 | . . . . . 6 ⊢ (⊤ → 2o ∈ V) |
| 7 | 4, 6 | setcbas 18233 | . . . . 5 ⊢ (⊤ → 2o = (Base‘𝐶)) |
| 8 | 7 | mptru 1577 | . . . 4 ⊢ 2o = (Base‘𝐶) |
| 9 | df2o3 8468 | . . . 4 ⊢ 2o = {∅, 1o} | |
| 10 | 3, 8, 9 | 3eqtr2i 2790 | . . 3 ⊢ 𝐵 = {∅, 1o} |
| 11 | 2, 10 | eleqtrri 2860 | . 2 ⊢ ∅ ∈ 𝐵 |
| 12 | 1oelpr 8471 | . . 3 ⊢ 1o ∈ {∅, 1o} | |
| 13 | 12, 10 | eleqtrri 2860 | . 2 ⊢ 1o ∈ 𝐵 |
| 14 | 1n0 8479 | . 2 ⊢ 1o ≠ ∅ | |
| 15 | 11, 13, 14 | 3pm3.2i 1358 | 1 ⊢ (∅ ∈ 𝐵 ∧ 1o ∈ 𝐵 ∧ 1o ≠ ∅) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: ∧ w3a 1103 = wceq 1570 ⊤wtru 1571 ∈ wcel 2145 ≠ wne 2956 Vcvv 3451 ∅c0 4279 {cpr 4586 ‘cfv 6531 1oc1o 8453 2oc2o 8454 Basecbs 17367 SetCatcsetc 18230 |
| 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 2733 ax-sep 5249 ax-nul 5260 ax-pow 5327 ax-pr 5391 ax-un 7740 ax-cnex 11237 ax-resscn 11238 ax-1cn 11239 ax-icn 11240 ax-addcl 11241 ax-addrcl 11242 ax-mulcl 11243 ax-mulrcl 11244 ax-mulcom 11245 ax-addass 11246 ax-mulass 11247 ax-distr 11248 ax-i2m1 11249 ax-1ne0 11250 ax-1rid 11251 ax-rnegex 11252 ax-rrecex 11253 ax-cnre 11254 ax-pre-lttri 11255 ax-pre-lttrn 11256 ax-pre-ltadd 11257 ax-pre-mulgt0 11258 |
| This proof depends on definitions: df-bi 210 df-an 402 df-or 862 df-3or 1104 df-3an 1105 df-tru 1573 df-fal 1583 df-ex 1813 df-nf 1817 df-sb 2100 df-mo 2565 df-eu 2595 df-clab 2740 df-cleq 2753 df-clel 2836 df-nfc 2910 df-ne 2957 df-nel 3063 df-ral 3078 df-rex 3088 df-reu 3367 df-rab 3414 df-v 3453 df-sbc 3740 df-csb 3848 df-dif 3902 df-un 3904 df-in 3906 df-ss 3916 df-pss 3919 df-nul 4280 df-if 4483 df-pw 4559 df-sn 4585 df-pr 4587 df-tp 4589 df-op 4591 df-uni 4868 df-iun 4953 df-br 5104 df-opab 5168 df-mpt 5187 df-tr 5213 df-id 5546 df-eprel 5551 df-po 5559 df-so 5560 df-fr 5604 df-we 5606 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-pred 6297 df-ord 6358 df-on 6359 df-lim 6360 df-suc 6361 df-iota 6487 df-fun 6533 df-fn 6534 df-f 6535 df-f1 6536 df-fo 6537 df-f1o 6538 df-fv 6539 df-riota 7369 df-ov 7415 df-oprab 7416 df-mpo 7417 df-om 7867 df-1st 7990 df-2nd 7991 df-frecs 8283 df-wrecs 8314 df-recs 8363 df-rdg 8402 df-1o 8460 df-2o 8461 df-er 8701 df-en 8958 df-dom 8959 df-sdom 8960 df-fin 8961 df-pnf 11326 df-mnf 11327 df-xr 11328 df-ltxr 11329 df-le 11330 df-sub 11524 df-neg 11525 df-nn 12317 df-2 12386 df-3 12387 df-4 12388 df-5 12389 df-6 12390 df-7 12391 df-8 12392 df-9 12393 df-n0 12588 df-z 12675 df-dec 12796 df-uz 12947 df-fz 13621 df-struct 17305 df-slot 17340 df-ndx 17352 df-base 17368 df-hom 17432 df-cco 17433 df-setc 18231 |
| This theorem is used by: (None) |
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