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| Mirrors > Home > MPE Home > Th. List > Mathboxes > disjeccnvep | Structured version Visualization version GIF version | ||
| Description: Property of the epsilon relation. (Contributed by Peter Mazsa, 27-Apr-2020.) |
| Ref | Expression |
|---|---|
| disjeccnvep | ⊢ ((𝐴 ∈ 𝑉 ∧ 𝐵 ∈ 𝑊) → (([𝐴]◡ E ∩ [𝐵]◡ E ) = ∅ ↔ (𝐴 ∩ 𝐵) = ∅)) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | eccnvep 38265 | . . 3 ⊢ (𝐴 ∈ 𝑉 → [𝐴]◡ E = 𝐴) | |
| 2 | eccnvep 38265 | . . 3 ⊢ (𝐵 ∈ 𝑊 → [𝐵]◡ E = 𝐵) | |
| 3 | 1, 2 | ineqan12d 4187 | . 2 ⊢ ((𝐴 ∈ 𝑉 ∧ 𝐵 ∈ 𝑊) → ([𝐴]◡ E ∩ [𝐵]◡ E ) = (𝐴 ∩ 𝐵)) |
| 4 | 3 | eqeq1d 2732 | 1 ⊢ ((𝐴 ∈ 𝑉 ∧ 𝐵 ∈ 𝑊) → (([𝐴]◡ E ∩ [𝐵]◡ E ) = ∅ ↔ (𝐴 ∩ 𝐵) = ∅)) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ↔ wb 206 ∧ wa 395 = wceq 1540 ∈ wcel 2109 ∩ cin 3915 ∅c0 4298 E cep 5539 ◡ccnv 5639 [cec 8671 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1795 ax-4 1809 ax-5 1910 ax-6 1967 ax-7 2008 ax-8 2111 ax-9 2119 ax-10 2142 ax-11 2158 ax-12 2178 ax-ext 2702 ax-sep 5253 ax-nul 5263 ax-pr 5389 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 848 df-3an 1088 df-tru 1543 df-fal 1553 df-ex 1780 df-nf 1784 df-sb 2066 df-clab 2709 df-cleq 2722 df-clel 2804 df-ne 2927 df-ral 3046 df-rex 3055 df-rab 3409 df-v 3452 df-dif 3919 df-un 3921 df-in 3923 df-ss 3933 df-nul 4299 df-if 4491 df-sn 4592 df-pr 4594 df-op 4598 df-br 5110 df-opab 5172 df-eprel 5540 df-xp 5646 df-rel 5647 df-cnv 5648 df-dm 5650 df-rn 5651 df-res 5652 df-ima 5653 df-ec 8675 |
| This theorem is referenced by: disjecxrncnvep 38371 |
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