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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 3220 |
. 2
| |
| 2 | df-rel 3175 |
. 2
| |
| 3 | 1, 2 | mpbir 190 |
1
|
| Colors of variables: wff set class |
| Syntax hints: |
| This theorem is referenced by: ssxp 3246 xpsspw 3247 inxp 3259 cnvxp 3450 cnvcnv 3472 unixp 3503 fconst 3643 oprssdm 4027 ndmoprcl 4030 eloprabi 4102 ecopoprdm 4293 mapsspw 4325 mapdom2lem 4473 brdom3 4773 brdom5 4774 brdom4 4775 prcdpq 5069 ndmioo 6307 elfzlem 6405 infxpidmlem7 7501 nvvop 8166 eloi 10503 |
| This theorem was proved from axioms: ax-1 4 ax-2 5 ax-3 6 ax-mp 7 ax-7 959 ax-gen 960 ax-8 961 ax-10 963 ax-11 964 ax-12 965 ax-13 966 ax-14 967 ax-17 968 ax-4 970 ax-5o 972 ax-6o 975 ax-9o 1119 ax-10o 1136 ax-16 1206 ax-11o 1213 ax-ext 1452 ax-sep 2693 ax-pow 2732 ax-pr 2769 |
| This theorem depends on definitions: df-bi 147 df-or 224 df-an 225 df-ex 978 df-sb 1168 df-eu 1375 df-mo 1376 df-clab 1457 df-cleq 1462 df-clel 1465 df-ne 1579 df-v 1803 df-dif 2039 df-un 2040 df-in 2041 df-ss 2043 df-nul 2271 df-pw 2392 df-sn 2402 df-pr 2403 df-op 2406 df-opab 2657 df-xp 3174 df-rel 3175 |