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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 18190 demonstrates that the category does not have pairwise disjoint hom-sets. See also df-cat 17762 and cat1 18192. (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 5268 | . . . 4 ⊢ ∅ ∈ V | |
| 2 | 1 | prid1 4726 | . . 3 ⊢ ∅ ∈ {∅, 1o} |
| 3 | setc2obas.b | . . . 4 ⊢ 𝐵 = (Base‘𝐶) | |
| 4 | setc2ohom.c | . . . . . 6 ⊢ 𝐶 = (SetCat‘2o) | |
| 5 | 2oex 8471 | . . . . . . 7 ⊢ 2o ∈ V | |
| 6 | 5 | a1i 11 | . . . . . 6 ⊢ (⊤ → 2o ∈ V) |
| 7 | 4, 6 | setcbas 18173 | . . . . 5 ⊢ (⊤ → 2o = (Base‘𝐶)) |
| 8 | 7 | mptru 1577 | . . . 4 ⊢ 2o = (Base‘𝐶) |
| 9 | df2o3 8467 | . . . 4 ⊢ 2o = {∅, 1o} | |
| 10 | 3, 8, 9 | 3eqtr2i 2791 | . . 3 ⊢ 𝐵 = {∅, 1o} |
| 11 | 2, 10 | eleqtrri 2861 | . 2 ⊢ ∅ ∈ 𝐵 |
| 12 | 1oelpr 8470 | . . 3 ⊢ 1o ∈ {∅, 1o} | |
| 13 | 12, 10 | eleqtrri 2861 | . 2 ⊢ 1o ∈ 𝐵 |
| 14 | 1n0 8478 | . 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 2957 Vcvv 3453 ∅c0 4282 {cpr 4589 ‘cfv 6537 1oc1o 8452 2oc2o 8453 Basecbs 17307 SetCatcsetc 18170 |
| 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 2215 ax-ext 2734 ax-sep 5255 ax-nul 5267 ax-pow 5334 ax-pr 5402 ax-un 7740 ax-cnex 11184 ax-resscn 11185 ax-1cn 11186 ax-icn 11187 ax-addcl 11188 ax-addrcl 11189 ax-mulcl 11190 ax-mulrcl 11191 ax-mulcom 11192 ax-addass 11193 ax-mulass 11194 ax-distr 11195 ax-i2m1 11196 ax-1ne0 11197 ax-1rid 11198 ax-rnegex 11199 ax-rrecex 11200 ax-cnre 11201 ax-pre-lttri 11202 ax-pre-lttrn 11203 ax-pre-ltadd 11204 ax-pre-mulgt0 11205 |
| 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 2566 df-eu 2596 df-clab 2741 df-cleq 2754 df-clel 2837 df-nfc 2911 df-ne 2958 df-nel 3064 df-ral 3079 df-rex 3089 df-reu 3368 df-rab 3415 df-v 3455 df-sbc 3743 df-csb 3851 df-dif 3905 df-un 3907 df-in 3909 df-ss 3919 df-pss 3922 df-nul 4283 df-if 4486 df-pw 4562 df-sn 4588 df-pr 4590 df-tp 4592 df-op 4594 df-uni 4871 df-iun 4956 df-br 5108 df-opab 5172 df-mpt 5191 df-tr 5217 df-id 5554 df-eprel 5559 df-po 5567 df-so 5568 df-fr 5612 df-we 5614 df-xp 5665 df-rel 5666 df-cnv 5667 df-co 5668 df-dm 5669 df-rn 5670 df-res 5671 df-ima 5672 df-pred 6303 df-ord 6364 df-on 6365 df-lim 6366 df-suc 6367 df-iota 6493 df-fun 6539 df-fn 6540 df-f 6541 df-f1 6542 df-fo 6543 df-f1o 6544 df-fv 6545 df-riota 7374 df-ov 7420 df-oprab 7421 df-mpo 7422 df-om 7867 df-1st 7990 df-2nd 7991 df-frecs 8284 df-wrecs 8315 df-recs 8364 df-rdg 8403 df-1o 8459 df-2o 8460 df-er 8700 df-en 8957 df-dom 8958 df-sdom 8959 df-fin 8960 df-pnf 11273 df-mnf 11274 df-xr 11275 df-ltxr 11276 df-le 11277 df-sub 11471 df-neg 11472 df-nn 12262 df-2 12331 df-3 12332 df-4 12333 df-5 12334 df-6 12335 df-7 12336 df-8 12337 df-9 12338 df-n0 12533 df-z 12620 df-dec 12741 df-uz 12892 df-fz 13566 df-struct 17245 df-slot 17280 df-ndx 17292 df-base 17308 df-hom 17372 df-cco 17373 df-setc 18171 |
| This theorem is used by: (None) |
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