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Mirrors > Home > ILE Home > Th. List > xpdom3m | Unicode version |
Description: A set is dominated by its Cartesian product with an inhabited set. Exercise 6 of [Suppes] p. 98. (Contributed by Jim Kingdon, 15-Apr-2020.) |
Ref | Expression |
---|---|
xpdom3m |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | xpsneng 6684 | . . . . . . 7 | |
2 | 1 | 3adant2 985 | . . . . . 6 |
3 | 2 | ensymd 6645 | . . . . 5 |
4 | xpexg 4623 | . . . . . . 7 | |
5 | 4 | 3adant3 986 | . . . . . 6 |
6 | simp3 968 | . . . . . . . 8 | |
7 | 6 | snssd 3635 | . . . . . . 7 |
8 | xpss2 4620 | . . . . . . 7 | |
9 | 7, 8 | syl 14 | . . . . . 6 |
10 | ssdomg 6640 | . . . . . 6 | |
11 | 5, 9, 10 | sylc 62 | . . . . 5 |
12 | endomtr 6652 | . . . . 5 | |
13 | 3, 11, 12 | syl2anc 408 | . . . 4 |
14 | 13 | 3expia 1168 | . . 3 |
15 | 14 | exlimdv 1775 | . 2 |
16 | 15 | 3impia 1163 | 1 |
Colors of variables: wff set class |
Syntax hints: wi 4 wa 103 w3a 947 wex 1453 wcel 1465 cvv 2660 wss 3041 csn 3497 class class class wbr 3899 cxp 4507 cen 6600 cdom 6601 |
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 683 ax-5 1408 ax-7 1409 ax-gen 1410 ax-ie1 1454 ax-ie2 1455 ax-8 1467 ax-10 1468 ax-11 1469 ax-i12 1470 ax-bndl 1471 ax-4 1472 ax-13 1476 ax-14 1477 ax-17 1491 ax-i9 1495 ax-ial 1499 ax-i5r 1500 ax-ext 2099 ax-sep 4016 ax-pow 4068 ax-pr 4101 ax-un 4325 |
This theorem depends on definitions: df-bi 116 df-3an 949 df-tru 1319 df-nf 1422 df-sb 1721 df-eu 1980 df-mo 1981 df-clab 2104 df-cleq 2110 df-clel 2113 df-nfc 2247 df-ral 2398 df-rex 2399 df-v 2662 df-un 3045 df-in 3047 df-ss 3054 df-pw 3482 df-sn 3503 df-pr 3504 df-op 3506 df-uni 3707 df-int 3742 df-br 3900 df-opab 3960 df-mpt 3961 df-id 4185 df-xp 4515 df-rel 4516 df-cnv 4517 df-co 4518 df-dm 4519 df-rn 4520 df-res 4521 df-ima 4522 df-fun 5095 df-fn 5096 df-f 5097 df-f1 5098 df-fo 5099 df-f1o 5100 df-er 6397 df-en 6603 df-dom 6604 |
This theorem is referenced by: (None) |
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