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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 4863 | . 2 ⊢ (𝐴 × 𝐵) ⊆ (V × V) | |
| 2 | df-rel 4761 | . 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 2815 ⊆ wss 3214 × cxp 4752 Rel wrel 4759 |
| 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 2216 |
| This theorem depends on definitions: df-bi 117 df-nf 1510 df-sb 1812 df-clab 2221 df-cleq 2227 df-clel 2230 df-nfc 2375 df-v 2817 df-in 3220 df-ss 3227 df-opab 4177 df-xp 4760 df-rel 4761 |
| This theorem is referenced by: xpiindim 4897 eliunxp 4899 opeliunxp2 4900 relres 5071 restidsing 5099 codir 5156 qfto 5157 cnvcnv 5220 dfco2 5267 unixpm 5303 ressn 5308 fliftcnv 5974 fliftfun 5975 opeliunxp2f 6482 reltpos 6494 tpostpos 6508 tposfo 6515 tposf 6516 swoer 6808 xpider 6853 erinxp 6856 xpcomf1o 7089 ltrel 8351 lerel 8353 fisumcom2 12149 fprodcom2fi 12337 txuni2 15233 txdis1cn 15255 xmeter 15413 reldvg 15656 lgsquadlem1 16062 lgsquadlem2 16063 |
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