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Related theorems GIF version |
| Description: Binary relation on a cross product. |
| Ref | Expression |
|---|---|
| opelxp.1 | ⊢ B ∈ V |
| Ref | Expression |
|---|---|
| brxp | ⊢ (A(C × D)B ↔ (A ∈ C ∧ B ∈ D)) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | df-br 2063 | . 2 ⊢ (A(C × D)B ↔ 〈A, B〉 ∈ (C × D)) | |
| 2 | opelxp.1 | . . 3 ⊢ B ∈ V | |
| 3 | 2 | opelxp 2452 | . 2 ⊢ (〈A, B〉 ∈ (C × D) ↔ (A ∈ C ∧ B ∈ D)) |
| 4 | 1, 3 | bitr 151 | 1 ⊢ (A(C × D)B ↔ (A ∈ C ∧ B ∈ D)) |
| Colors of variables: wff set class |
| Syntax hints: ↔ wb 127 ∧ wa 196 ∈ wcel 1092 Vcvv 1348 〈cop 1810 class class class wbr 2054 × cxp 2408 |
| This theorem is referenced by: fconst 2774 |
| This theorem was proved from axioms: ax-1 3 ax-2 4 ax-3 5 ax-mp 6 ax-4 673 ax-5 674 ax-6 675 ax-7 676 ax-gen 677 ax-8 798 ax-9 799 ax-10 800 ax-11 801 ax-12 802 ax-13 804 ax-14 nbsp;805 ax-16 922 ax-17 925 ax-ext 1074 ax-rep 1075 ax-pow 1077 |
| This theorem depends on definitions: df-bi 128 df-or 197 df-an 198 df-ex 679 df-sb 853 df-clab 1093 df-cleq 1097 df-clel 1099 df-v 1349 df-dif 1489 df-un 1490 df-in 1491 df-ss 1492 df-nul 1708 df-pw 1799 df-sn 1811 df-pr 1812 df-op 1815 df-br 2063 df-opab 2098 df-xp 2424 |