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| Description: A cross product is a relation. Theorem 3.13(i) of [Monk1] p. 37. |
| Ref | Expression |
|---|---|
| relxp |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | xpss 3225 |
. 2
| |
| 2 | df-rel 3180 |
. 2
| |
| 3 | 1, 2 | mpbir 190 |
1
|
| Colors of variables: wff set class |
| Syntax hints: |
| This theorem is referenced by: ssxp 3251 xpsspw 3252 inxp 3264 cnvxp 3456 cnvcnv 3478 unixp 3509 fconst 3649 oprssdm 4033 ndmoprcl 4036 eloprabi 4108 ecopoprdm 4299 mapsspw 4331 mapdom2lem 4479 brdom3 4781 brdom5 4782 brdom4 4783 prcdpq 5077 ndmioo 6315 elfzlem 6413 infxpidmlem7 7509 metne0 7773 nvvop 8180 eloi 10539 |
| This theorem was proved from axioms: ax-1 4 ax-2 5 ax-3 6 ax-mp 7 ax-7 960 ax-gen 961 ax-8 962 ax-10 964 ax-11 965 ax-12 966 ax-13 967 ax-14 968 ax-17 969 ax-4 971 ax-5o 973 ax-6o 976 ax-9o 1121 ax-10o 1138 ax-16 1208 ax-11o 1216 ax-ext 1457 ax-sep 2698 ax-pow 2737 ax-pr 2774 |
| This theorem depends on definitions: df-bi 147 df-or 224 df-an 225 df-ex 979 df-sb 1170 df-eu 1380 df-mo 1381 df-clab 1462 df-cleq 1467 df-clel 1470 df-ne 1584 df-v 1808 df-dif 2045 df-un 2046 df-in 2047 df-ss 2049 df-nul 2277 df-pw 2398 df-sn 2408 df-pr 2409 df-op 2412 df-opab 2662 df-xp 3179 df-rel 3180 |