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Mirrors > Home > ILE Home > Th. List > ssdomg | Unicode version |
Description: A set dominates its subsets. Theorem 16 of [Suppes] p. 94. (Contributed by NM, 19-Jun-1998.) (Revised by Mario Carneiro, 24-Jun-2015.) |
Ref | Expression |
---|---|
ssdomg |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | ssexg 4062 | . . 3 | |
2 | simpr 109 | . . 3 | |
3 | f1oi 5398 | . . . . . . . . . 10 | |
4 | dff1o3 5366 | . . . . . . . . . 10 | |
5 | 3, 4 | mpbi 144 | . . . . . . . . 9 |
6 | 5 | simpli 110 | . . . . . . . 8 |
7 | fof 5340 | . . . . . . . 8 | |
8 | 6, 7 | ax-mp 5 | . . . . . . 7 |
9 | fss 5279 | . . . . . . 7 | |
10 | 8, 9 | mpan 420 | . . . . . 6 |
11 | funi 5150 | . . . . . . . 8 | |
12 | cnvi 4938 | . . . . . . . . 9 | |
13 | 12 | funeqi 5139 | . . . . . . . 8 |
14 | 11, 13 | mpbir 145 | . . . . . . 7 |
15 | funres11 5190 | . . . . . . 7 | |
16 | 14, 15 | ax-mp 5 | . . . . . 6 |
17 | 10, 16 | jctir 311 | . . . . 5 |
18 | df-f1 5123 | . . . . 5 | |
19 | 17, 18 | sylibr 133 | . . . 4 |
20 | 19 | adantr 274 | . . 3 |
21 | f1dom2g 6643 | . . 3 | |
22 | 1, 2, 20, 21 | syl3anc 1216 | . 2 |
23 | 22 | expcom 115 | 1 |
Colors of variables: wff set class |
Syntax hints: wi 4 wa 103 wcel 1480 cvv 2681 wss 3066 class class class wbr 3924 cid 4205 ccnv 4533 cres 4536 wfun 5112 wf 5114 wf1 5115 wfo 5116 wf1o 5117 cdom 6626 |
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-13 1491 ax-14 1492 ax-17 1506 ax-i9 1510 ax-ial 1514 ax-i5r 1515 ax-ext 2119 ax-sep 4041 ax-pow 4093 ax-pr 4126 ax-un 4350 |
This theorem depends on definitions: df-bi 116 df-3an 964 df-tru 1334 df-nf 1437 df-sb 1736 df-eu 2000 df-mo 2001 df-clab 2124 df-cleq 2130 df-clel 2133 df-nfc 2268 df-ral 2419 df-rex 2420 df-v 2683 df-un 3070 df-in 3072 df-ss 3079 df-pw 3507 df-sn 3528 df-pr 3529 df-op 3531 df-uni 3732 df-br 3925 df-opab 3985 df-id 4210 df-xp 4540 df-rel 4541 df-cnv 4542 df-co 4543 df-dm 4544 df-rn 4545 df-res 4546 df-ima 4547 df-fun 5120 df-fn 5121 df-f 5122 df-f1 5123 df-fo 5124 df-f1o 5125 df-dom 6629 |
This theorem is referenced by: cnvct 6696 ssct 6705 xpdom3m 6721 0domg 6724 mapdom1g 6734 phplem4dom 6749 nndomo 6751 phpm 6752 fict 6755 domfiexmid 6765 infnfi 6782 exmidfodomrlemr 7051 exmidfodomrlemrALT 7052 fihashss 10555 phicl2 11879 phibnd 11882 qnnen 11933 pw1dom2 13179 sbthom 13210 |
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