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Related theorems GIF version |
| Description: A cross product is a relation. Theorem 3.13(i) of [Monk1] p. 37. |
| Ref | Expression |
|---|---|
| relxp | ⊢ Rel (A × B) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | xpss 2465 | . 2 ⊢ (A × B) ⊆ (V × V) | |
| 2 | df-rel 2425 | . 2 ⊢ (Rel (A × B) ↔ (A × B) ⊆ (V × V)) | |
| 3 | 1, 2 | mpbir 165 | 1 ⊢ Rel (A × B) |
| Colors of variables: wff set class |
| Syntax hints: Vcvv 1348 ⊆ wss 1487 × cxp 2408 Rel wrel 2415 |
| This theorem is referenced by: ssxp 2487 xpex 2488 inxp 2496 cnvxp 2651 cnvcnv 2661 fconst 2774 oprssdm 3056 ndmoprcl 3058 ecopoprdm 3245 mapdom2lem 3388 prcdpq 3891 infxpidmlem7 4939 |
| 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-14 805 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-opab 2098 df-xp 2424 df-rel 2425 |