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| Mirrors > Home > ILE Home > Th. List > relxp | Unicode version | ||
| Description: A cross product is a relation. Theorem 3.13(i) of [Monk1] p. 37. (Contributed by NM, 2-Aug-1994.) |
| Ref | Expression |
|---|---|
| relxp |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | xpss 4883 |
. 2
| |
| 2 | df-rel 4781 |
. 2
| |
| 3 | 1, 2 | mpbir 146 |
1
|
| Colors of variables: wff set class |
| This proof depends on syntax axioms:
|
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 106 ax-ia2 107 ax-ia3 108 ax-io 721 ax-5 1500 ax-7 1501 ax-gen 1502 ax-ie1 1546 ax-ie2 1547 ax-8 1557 ax-10 1558 ax-11 1559 ax-i12 1560 ax-bndl 1562 ax-4 1563 ax-17 1579 ax-i9 1583 ax-ial 1587 ax-i5r 1588 ax-ext 2220 |
| This proof depends on definitions: df-bi 117 df-nf 1514 df-sb 1816 df-clab 2225 df-cleq 2231 df-clel 2234 df-nfc 2381 df-v 2823 df-in 3226 df-ss 3233 df-opab 4193 df-xp 4780 df-rel 4781 |
| This theorem is used by: xpiindim 4917 eliunxp 4919 opeliunxp2 4920 relres 5091 restidsing 5119 codir 5176 qfto 5177 cnvcnv 5240 dfco2 5287 unixpm 5323 ressn 5328 fliftcnv 6001 fliftfun 6002 opeliunxp2f 6509 reltpos 6521 tpostpos 6535 tposfo 6542 tposf 6543 swoer 6835 xpider 6880 erinxp 6883 xpcomf1o 7123 ltrel 8387 lerel 8389 fisumcom2 12205 fprodcom2fi 12393 txuni2 15357 txdis1cn 15379 xmeter 15537 reldvg 15780 lgsquadlem1 16196 lgsquadlem2 16197 |
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