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| Mirrors > Home > ILE Home > Th. List > relxp | GIF 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 | ⊢ Rel (𝐴 × 𝐵) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | xpss 4829 | . 2 ⊢ (𝐴 × 𝐵) ⊆ (V × V) | |
| 2 | df-rel 4727 | . 2 ⊢ (Rel (𝐴 × 𝐵) ↔ (𝐴 × 𝐵) ⊆ (V × V)) | |
| 3 | 1, 2 | mpbir 146 | 1 ⊢ Rel (𝐴 × 𝐵) |
| Colors of variables: wff set class |
| Syntax hints: Vcvv 2799 ⊆ wss 3197 × cxp 4718 Rel wrel 4725 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 106 ax-ia2 107 ax-ia3 108 ax-io 714 ax-5 1493 ax-7 1494 ax-gen 1495 ax-ie1 1539 ax-ie2 1540 ax-8 1550 ax-10 1551 ax-11 1552 ax-i12 1553 ax-bndl 1555 ax-4 1556 ax-17 1572 ax-i9 1576 ax-ial 1580 ax-i5r 1581 ax-ext 2211 |
| This theorem depends on definitions: df-bi 117 df-nf 1507 df-sb 1809 df-clab 2216 df-cleq 2222 df-clel 2225 df-nfc 2361 df-v 2801 df-in 3203 df-ss 3210 df-opab 4146 df-xp 4726 df-rel 4727 |
| This theorem is referenced by: xpiindim 4862 eliunxp 4864 opeliunxp2 4865 relres 5036 restidsing 5064 codir 5120 qfto 5121 cnvcnv 5184 dfco2 5231 unixpm 5267 ressn 5272 fliftcnv 5928 fliftfun 5929 opeliunxp2f 6395 reltpos 6407 tpostpos 6421 tposfo 6428 tposf 6429 swoer 6721 xpider 6766 erinxp 6769 xpcomf1o 6997 ltrel 8224 lerel 8226 fisumcom2 11970 fprodcom2fi 12158 txuni2 14951 txdis1cn 14973 xmeter 15131 reldvg 15374 lgsquadlem1 15777 lgsquadlem2 15778 |
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