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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 4840 | . 2 ⊢ (𝐴 × 𝐵) ⊆ (V × V) | |
| 2 | df-rel 4738 | . 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 2803 ⊆ wss 3201 × cxp 4729 Rel wrel 4736 |
| 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 2213 |
| This theorem depends on definitions: df-bi 117 df-nf 1510 df-sb 1811 df-clab 2218 df-cleq 2224 df-clel 2227 df-nfc 2364 df-v 2805 df-in 3207 df-ss 3214 df-opab 4156 df-xp 4737 df-rel 4738 |
| This theorem is referenced by: xpiindim 4873 eliunxp 4875 opeliunxp2 4876 relres 5047 restidsing 5075 codir 5132 qfto 5133 cnvcnv 5196 dfco2 5243 unixpm 5279 ressn 5284 fliftcnv 5946 fliftfun 5947 opeliunxp2f 6447 reltpos 6459 tpostpos 6473 tposfo 6480 tposf 6481 swoer 6773 xpider 6818 erinxp 6821 xpcomf1o 7052 ltrel 8284 lerel 8286 fisumcom2 12060 fprodcom2fi 12248 txuni2 15047 txdis1cn 15069 xmeter 15227 reldvg 15470 lgsquadlem1 15876 lgsquadlem2 15877 |
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