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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 4281 | . 2 ⊢ (𝐴 ∈ 𝐵 → ¬ 𝐵 = ∅) | |
| 2 | elbasov.s | . . . . 5 ⊢ 𝑆 = (𝑋𝑂𝑌) | |
| 3 | elbasov.o | . . . . . 6 ⊢ Rel dom 𝑂 | |
| 4 | 3 | ovprc 7398 | . . . . 5 ⊢ (¬ (𝑋 ∈ V ∧ 𝑌 ∈ V) → (𝑋𝑂𝑌) = ∅) |
| 5 | 2, 4 | eqtrid 2784 | . . . 4 ⊢ (¬ (𝑋 ∈ V ∧ 𝑌 ∈ V) → 𝑆 = ∅) |
| 6 | 5 | fveq2d 6838 | . . 3 ⊢ (¬ (𝑋 ∈ V ∧ 𝑌 ∈ V) → (Base‘𝑆) = (Base‘∅)) |
| 7 | elbasov.b | . . 3 ⊢ 𝐵 = (Base‘𝑆) | |
| 8 | base0 17175 | . . 3 ⊢ ∅ = (Base‘∅) | |
| 9 | 6, 7, 8 | 3eqtr4g 2797 | . 2 ⊢ (¬ (𝑋 ∈ V ∧ 𝑌 ∈ V) → 𝐵 = ∅) |
| 10 | 1, 9 | nsyl2 141 | 1 ⊢ (𝐴 ∈ 𝐵 → (𝑋 ∈ V ∧ 𝑌 ∈ V)) |
| Colors of variables: wff setvar class |
| Syntax hints: ¬ wn 3 → wi 4 ∧ wa 395 = wceq 1542 ∈ wcel 2114 Vcvv 3430 ∅c0 4274 dom cdm 5624 Rel wrel 5629 ‘cfv 6492 (class class class)co 7360 Basecbs 17170 |
| 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 1912 ax-6 1969 ax-7 2010 ax-8 2116 ax-9 2124 ax-10 2147 ax-11 2163 ax-12 2185 ax-ext 2709 ax-sep 5231 ax-nul 5241 ax-pow 5302 ax-pr 5370 ax-un 7682 ax-cnex 11085 ax-1cn 11087 ax-addcl 11089 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 849 df-3or 1088 df-3an 1089 df-tru 1545 df-fal 1555 df-ex 1782 df-nf 1786 df-sb 2069 df-mo 2540 df-eu 2570 df-clab 2716 df-cleq 2729 df-clel 2812 df-nfc 2886 df-ne 2934 df-ral 3053 df-rex 3063 df-reu 3344 df-rab 3391 df-v 3432 df-sbc 3730 df-csb 3839 df-dif 3893 df-un 3895 df-in 3897 df-ss 3907 df-pss 3910 df-nul 4275 df-if 4468 df-pw 4544 df-sn 4569 df-pr 4571 df-op 4575 df-uni 4852 df-iun 4936 df-br 5087 df-opab 5149 df-mpt 5168 df-tr 5194 df-id 5519 df-eprel 5524 df-po 5532 df-so 5533 df-fr 5577 df-we 5579 df-xp 5630 df-rel 5631 df-cnv 5632 df-co 5633 df-dm 5634 df-rn 5635 df-res 5636 df-ima 5637 df-pred 6259 df-ord 6320 df-on 6321 df-lim 6322 df-suc 6323 df-iota 6448 df-fun 6494 df-fn 6495 df-f 6496 df-f1 6497 df-fo 6498 df-f1o 6499 df-fv 6500 df-ov 7363 df-om 7811 df-2nd 7936 df-frecs 8224 df-wrecs 8255 df-recs 8304 df-rdg 8342 df-nn 12166 df-slot 17143 df-ndx 17155 df-base 17171 |
| This theorem is referenced by: strov2rcl 17178 psrelbas 21924 psraddcl 21928 psrmulcllem 21934 psrvscafval 21937 psrvscacl 21940 resspsradd 21963 resspsrmul 21964 selvval 22111 ismhp 22116 psdval 22135 psdpw 22146 cphsubrglem 25154 mhmcopsr 43006 elxpcbasex2 49737 |
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