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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 4857 | . 2 ⊢ (𝐴 × 𝐵) ⊆ (V × V) | |
| 2 | df-rel 4755 | . 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 2812 ⊆ wss 3210 × cxp 4746 Rel wrel 4753 |
| 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 717 ax-5 1496 ax-7 1497 ax-gen 1498 ax-ie1 1542 ax-ie2 1543 ax-8 1553 ax-10 1554 ax-11 1555 ax-i12 1556 ax-bndl 1558 ax-4 1559 ax-17 1575 ax-i9 1579 ax-ial 1583 ax-i5r 1584 ax-ext 2214 |
| This theorem depends on definitions: df-bi 117 df-nf 1510 df-sb 1812 df-clab 2219 df-cleq 2225 df-clel 2228 df-nfc 2373 df-v 2814 df-in 3216 df-ss 3223 df-opab 4171 df-xp 4754 df-rel 4755 |
| This theorem is referenced by: xpiindim 4891 eliunxp 4893 opeliunxp2 4894 relres 5065 restidsing 5093 codir 5150 qfto 5151 cnvcnv 5214 dfco2 5261 unixpm 5297 ressn 5302 fliftcnv 5967 fliftfun 5968 opeliunxp2f 6468 reltpos 6480 tpostpos 6494 tposfo 6501 tposf 6502 swoer 6794 xpider 6839 erinxp 6842 xpcomf1o 7075 ltrel 8334 lerel 8336 fisumcom2 12120 fprodcom2fi 12308 txuni2 15113 txdis1cn 15135 xmeter 15293 reldvg 15536 lgsquadlem1 15942 lgsquadlem2 15943 |
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