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| Mirrors > Home > MPE Home > Th. List > elbasov | Structured version Visualization version GIF version | ||
| Description: Utility theorem: reverse closure for any structure defined as a two-argument function. (Contributed by Mario Carneiro, 3-Oct-2015.) |
| Ref | Expression |
|---|---|
| elbasov.o | ⊢ Rel dom 𝑂 |
| elbasov.s | ⊢ 𝑆 = (𝑋𝑂𝑌) |
| elbasov.b | ⊢ 𝐵 = (Base‘𝑆) |
| Ref | Expression |
|---|---|
| elbasov | ⊢ (𝐴 ∈ 𝐵 → (𝑋 ∈ V ∧ 𝑌 ∈ V)) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | n0i 4289 | . 2 ⊢ (𝐴 ∈ 𝐵 → ¬ 𝐵 = ∅) | |
| 2 | elbasov.s | . . . . 5 ⊢ 𝑆 = (𝑋𝑂𝑌) | |
| 3 | elbasov.o | . . . . . 6 ⊢ Rel dom 𝑂 | |
| 4 | 3 | ovprc 7481 | . . . . 5 ⊢ (¬ (𝑋 ∈ V ∧ 𝑌 ∈ V) → (𝑋𝑂𝑌) = ∅) |
| 5 | 2, 4 | eqtrid 2810 | . . . 4 ⊢ (¬ (𝑋 ∈ V ∧ 𝑌 ∈ V) → 𝑆 = ∅) |
| 6 | 5 | fveq2d 6912 | . . 3 ⊢ (¬ (𝑋 ∈ V ∧ 𝑌 ∈ V) → (Base‘𝑆) = (Base‘∅)) |
| 7 | elbasov.b | . . 3 ⊢ 𝐵 = (Base‘𝑆) | |
| 8 | base0 17421 | . . 3 ⊢ ∅ = (Base‘∅) | |
| 9 | 6, 7, 8 | 3eqtr4g 2823 | . 2 ⊢ (¬ (𝑋 ∈ V ∧ 𝑌 ∈ V) → 𝐵 = ∅) |
| 10 | 1, 9 | nsyl2 142 | 1 ⊢ (𝐴 ∈ 𝐵 → (𝑋 ∈ V ∧ 𝑌 ∈ V)) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: ¬ wn 3 → wi 4 ∧ wa 401 = wceq 1570 ∈ wcel 2147 Vcvv 3454 ∅c0 4281 dom cdm 5655 Rel wrel 5660 ‘cfv 6558 (class class class)co 7443 Basecbs 17416 |
| 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 1945 ax-6 2002 ax-7 2043 ax-8 2149 ax-9 2157 ax-10 2180 ax-11 2197 ax-12 2216 ax-ext 2735 ax-sep 5252 ax-nul 5263 ax-pow 5331 ax-pr 5395 ax-un 7775 ax-cnex 11283 ax-1cn 11285 ax-addcl 11287 |
| 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 2102 df-mo 2567 df-eu 2597 df-clab 2742 df-cleq 2755 df-clel 2839 df-nfc 2913 df-ne 2960 df-ral 3081 df-rex 3091 df-reu 3370 df-rab 3417 df-v 3456 df-sbc 3743 df-csb 3852 df-ss 3901 df-pss 4017 df-dif 4050 df-in 4094 df-un 4154 df-nul 4282 df-if 4486 df-pw 4562 df-sn 4589 df-pr 4591 df-op 4839 df-uni 4871 df-iun 4956 df-br 5107 df-opab 5171 df-mpt 5190 df-tr 5216 df-id 5550 df-eprel 5555 df-po 5563 df-so 5564 df-fr 5608 df-we 5610 df-xp 5661 df-rel 5662 df-cnv 5663 df-co 5664 df-dm 5665 df-rn 5666 df-res 5667 df-ima 5668 df-pred 6322 df-ord 6383 df-on 6384 df-lim 6385 df-suc 6386 df-iota 6512 df-fun 6560 df-fn 6561 df-f 6562 df-f1 6563 df-fo 6564 df-f1o 6565 df-fv 6566 df-ov 7446 df-om 7902 df-2nd 8026 df-frecs 8327 df-wrecs 8358 df-recs 8407 df-rdg 8446 df-nn 12363 df-slot 17389 df-ndx 17401 df-base 17417 |
| This theorem is used by: strov2rcl 17424 psrelbas 22273 psraddcl 22277 psrmulcllem 22283 psrvscafval 22286 psrvscacl 22289 resspsradd 22312 resspsrmul 22313 selvval 22459 ismhp 22491 psdval 22510 psdpw 22521 cphsubrglem 25528 frlmvscl 43759 mhmcopsr 43801 elxpcbasex2 50577 |
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