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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 18153 demonstrates that the category does not have pairwise disjoint hom-sets. See also df-cat 17725 and cat1 18155. (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 5271 | . . . 4 ⊢ ∅ ∈ V | |
| 2 | 1 | prid1 4729 | . . 3 ⊢ ∅ ∈ {∅, 1o} |
| 3 | setc2obas.b | . . . 4 ⊢ 𝐵 = (Base‘𝐶) | |
| 4 | setc2ohom.c | . . . . . 6 ⊢ 𝐶 = (SetCat‘2o) | |
| 5 | 2oex 8466 | . . . . . . 7 ⊢ 2o ∈ V | |
| 6 | 5 | a1i 11 | . . . . . 6 ⊢ (⊤ → 2o ∈ V) |
| 7 | 4, 6 | setcbas 18136 | . . . . 5 ⊢ (⊤ → 2o = (Base‘𝐶)) |
| 8 | 7 | mptru 1577 | . . . 4 ⊢ 2o = (Base‘𝐶) |
| 9 | df2o3 8462 | . . . 4 ⊢ 2o = {∅, 1o} | |
| 10 | 3, 8, 9 | 3eqtr2i 2792 | . . 3 ⊢ 𝐵 = {∅, 1o} |
| 11 | 2, 10 | eleqtrri 2862 | . 2 ⊢ ∅ ∈ 𝐵 |
| 12 | 1oelpr 8465 | . . 3 ⊢ 1o ∈ {∅, 1o} | |
| 13 | 12, 10 | eleqtrri 2862 | . 2 ⊢ 1o ∈ 𝐵 |
| 14 | 1n0 8473 | . 2 ⊢ 1o ≠ ∅ | |
| 15 | 11, 13, 14 | 3pm3.2i 1358 | 1 ⊢ (∅ ∈ 𝐵 ∧ 1o ∈ 𝐵 ∧ 1o ≠ ∅) |
| Colors of variables: wff setvar class |
| Syntax hints: ∧ w3a 1103 = wceq 1570 ⊤wtru 1571 ∈ wcel 2143 ≠ wne 2958 Vcvv 3455 ∅c0 4287 {cpr 4592 ‘cfv 6538 1oc1o 8447 2oc2o 8448 Basecbs 17270 SetCatcsetc 18133 |
| 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-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-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-frecs 8279 df-wrecs 8310 df-recs 8359 df-rdg 8398 df-1o 8454 df-2o 8455 df-er 8695 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-slot 17243 df-ndx 17255 df-base 17271 df-hom 17335 df-cco 17336 df-setc 18134 |
| This theorem is referenced by: (None) |
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