Intuitionistic Logic Explorer |
< Previous
Next >
Nearby theorems |
||
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 4647 | . 2 ⊢ (𝐴 × 𝐵) ⊆ (V × V) | |
2 | df-rel 4546 | . 2 ⊢ (Rel (𝐴 × 𝐵) ↔ (𝐴 × 𝐵) ⊆ (V × V)) | |
3 | 1, 2 | mpbir 145 | 1 ⊢ Rel (𝐴 × 𝐵) |
Colors of variables: wff set class |
Syntax hints: Vcvv 2686 ⊆ wss 3071 × cxp 4537 Rel wrel 4544 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 105 ax-ia2 106 ax-ia3 107 ax-io 698 ax-5 1423 ax-7 1424 ax-gen 1425 ax-ie1 1469 ax-ie2 1470 ax-8 1482 ax-10 1483 ax-11 1484 ax-i12 1485 ax-bndl 1486 ax-4 1487 ax-17 1506 ax-i9 1510 ax-ial 1514 ax-i5r 1515 ax-ext 2121 |
This theorem depends on definitions: df-bi 116 df-nf 1437 df-sb 1736 df-clab 2126 df-cleq 2132 df-clel 2135 df-nfc 2270 df-v 2688 df-in 3077 df-ss 3084 df-opab 3990 df-xp 4545 df-rel 4546 |
This theorem is referenced by: xpiindim 4676 eliunxp 4678 opeliunxp2 4679 relres 4847 codir 4927 qfto 4928 cnvcnv 4991 dfco2 5038 unixpm 5074 ressn 5079 fliftcnv 5696 fliftfun 5697 opeliunxp2f 6135 reltpos 6147 tpostpos 6161 tposfo 6168 tposf 6169 swoer 6457 xpider 6500 erinxp 6503 xpcomf1o 6719 ltrel 7826 lerel 7828 fisumcom2 11207 txuni2 12425 txdis1cn 12447 xmeter 12605 reldvg 12817 |
Copyright terms: Public domain | W3C validator |