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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 18022 demonstrates that the category does not have pairwise disjoint hom-sets. See also df-cat 17589 and cat1 18024. (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 5295 | . . . 4 ⊢ ∅ ∈ V | |
2 | 1 | prid1 4754 | . . 3 ⊢ ∅ ∈ {∅, 1o} |
3 | setc2obas.b | . . . 4 ⊢ 𝐵 = (Base‘𝐶) | |
4 | setc2ohom.c | . . . . . 6 ⊢ 𝐶 = (SetCat‘2o) | |
5 | 2oex 8454 | . . . . . . 7 ⊢ 2o ∈ V | |
6 | 5 | a1i 11 | . . . . . 6 ⊢ (⊤ → 2o ∈ V) |
7 | 4, 6 | setcbas 18005 | . . . . 5 ⊢ (⊤ → 2o = (Base‘𝐶)) |
8 | 7 | mptru 1548 | . . . 4 ⊢ 2o = (Base‘𝐶) |
9 | df2o3 8451 | . . . 4 ⊢ 2o = {∅, 1o} | |
10 | 3, 8, 9 | 3eqtr2i 2765 | . . 3 ⊢ 𝐵 = {∅, 1o} |
11 | 2, 10 | eleqtrri 2831 | . 2 ⊢ ∅ ∈ 𝐵 |
12 | 1oex 8453 | . . . 4 ⊢ 1o ∈ V | |
13 | 12 | prid2 4755 | . . 3 ⊢ 1o ∈ {∅, 1o} |
14 | 13, 10 | eleqtrri 2831 | . 2 ⊢ 1o ∈ 𝐵 |
15 | 1n0 8465 | . 2 ⊢ 1o ≠ ∅ | |
16 | 11, 14, 15 | 3pm3.2i 1339 | 1 ⊢ (∅ ∈ 𝐵 ∧ 1o ∈ 𝐵 ∧ 1o ≠ ∅) |
Colors of variables: wff setvar class |
Syntax hints: ∧ w3a 1087 = wceq 1541 ⊤wtru 1542 ∈ wcel 2106 ≠ wne 2939 Vcvv 3469 ∅c0 4313 {cpr 4619 ‘cfv 6527 1oc1o 8436 2oc2o 8437 Basecbs 17121 SetCatcsetc 18002 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1797 ax-4 1811 ax-5 1913 ax-6 1971 ax-7 2011 ax-8 2108 ax-9 2116 ax-10 2137 ax-11 2154 ax-12 2171 ax-ext 2702 ax-sep 5287 ax-nul 5294 ax-pow 5351 ax-pr 5415 ax-un 7703 ax-cnex 11143 ax-resscn 11144 ax-1cn 11145 ax-icn 11146 ax-addcl 11147 ax-addrcl 11148 ax-mulcl 11149 ax-mulrcl 11150 ax-mulcom 11151 ax-addass 11152 ax-mulass 11153 ax-distr 11154 ax-i2m1 11155 ax-1ne0 11156 ax-1rid 11157 ax-rnegex 11158 ax-rrecex 11159 ax-cnre 11160 ax-pre-lttri 11161 ax-pre-lttrn 11162 ax-pre-ltadd 11163 ax-pre-mulgt0 11164 |
This theorem depends on definitions: df-bi 206 df-an 397 df-or 846 df-3or 1088 df-3an 1089 df-tru 1544 df-fal 1554 df-ex 1782 df-nf 1786 df-sb 2068 df-mo 2533 df-eu 2562 df-clab 2709 df-cleq 2723 df-clel 2809 df-nfc 2884 df-ne 2940 df-nel 3046 df-ral 3061 df-rex 3070 df-reu 3375 df-rab 3429 df-v 3471 df-sbc 3769 df-csb 3885 df-dif 3942 df-un 3944 df-in 3946 df-ss 3956 df-pss 3958 df-nul 4314 df-if 4518 df-pw 4593 df-sn 4618 df-pr 4620 df-tp 4622 df-op 4624 df-uni 4897 df-iun 4987 df-br 5137 df-opab 5199 df-mpt 5220 df-tr 5254 df-id 5562 df-eprel 5568 df-po 5576 df-so 5577 df-fr 5619 df-we 5621 df-xp 5670 df-rel 5671 df-cnv 5672 df-co 5673 df-dm 5674 df-rn 5675 df-res 5676 df-ima 5677 df-pred 6284 df-ord 6351 df-on 6352 df-lim 6353 df-suc 6354 df-iota 6479 df-fun 6529 df-fn 6530 df-f 6531 df-f1 6532 df-fo 6533 df-f1o 6534 df-fv 6535 df-riota 7344 df-ov 7391 df-oprab 7392 df-mpo 7393 df-om 7834 df-1st 7952 df-2nd 7953 df-frecs 8243 df-wrecs 8274 df-recs 8348 df-rdg 8387 df-1o 8443 df-2o 8444 df-er 8681 df-en 8918 df-dom 8919 df-sdom 8920 df-fin 8921 df-pnf 11227 df-mnf 11228 df-xr 11229 df-ltxr 11230 df-le 11231 df-sub 11423 df-neg 11424 df-nn 12190 df-2 12252 df-3 12253 df-4 12254 df-5 12255 df-6 12256 df-7 12257 df-8 12258 df-9 12259 df-n0 12450 df-z 12536 df-dec 12655 df-uz 12800 df-fz 13462 df-struct 17057 df-slot 17092 df-ndx 17104 df-base 17122 df-hom 17198 df-cco 17199 df-setc 18003 |
This theorem is referenced by: (None) |
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