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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 4272 |
. . 3
| |
| 2 | simpr 110 |
. . 3
| |
| 3 | f1oi 5679 |
. . . . . . . . . 10
| |
| 4 | dff1o3 5645 |
. . . . . . . . . 10
| |
| 5 | 3, 4 | mpbi 145 |
. . . . . . . . 9
|
| 6 | 5 | simpli 111 |
. . . . . . . 8
|
| 7 | fof 5615 |
. . . . . . . 8
| |
| 8 | 6, 7 | ax-mp 5 |
. . . . . . 7
|
| 9 | fss 5546 |
. . . . . . 7
| |
| 10 | 8, 9 | mpan 428 |
. . . . . 6
|
| 11 | funi 5409 |
. . . . . . . 8
| |
| 12 | cnvi 5192 |
. . . . . . . . 9
| |
| 13 | 12 | funeqi 5398 |
. . . . . . . 8
|
| 14 | 11, 13 | mpbir 146 |
. . . . . . 7
|
| 15 | funres11 5453 |
. . . . . . 7
| |
| 16 | 14, 15 | ax-mp 5 |
. . . . . 6
|
| 17 | 10, 16 | jctir 313 |
. . . . 5
|
| 18 | df-f1 5382 |
. . . . 5
| |
| 19 | 17, 18 | sylibr 134 |
. . . 4
|
| 20 | 19 | adantr 276 |
. . 3
|
| 21 | f1dom2g 7042 |
. . 3
| |
| 22 | 1, 2, 20, 21 | syl3anc 1278 |
. 2
|
| 23 | 22 | expcom 116 |
1
|
| Colors of variables: wff set class |
| This proof depends on syntax axioms:
|
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 106 ax-ia2 107 ax-ia3 108 ax-io 721 ax-5 1500 ax-7 1501 ax-gen 1502 ax-ie1 1546 ax-ie2 1547 ax-8 1557 ax-10 1558 ax-11 1559 ax-i12 1560 ax-bndl 1562 ax-4 1563 ax-17 1579 ax-i9 1583 ax-ial 1587 ax-i5r 1588 ax-14 2212 ax-ext 2220 ax-sep 4249 ax-pow 4311 ax-pr 4346 ax-un 4578 |
| This proof depends on definitions: df-bi 117 df-3an 1011 df-tru 1405 df-nf 1514 df-sb 1816 df-eu 2089 df-mo 2090 df-clab 2225 df-cleq 2231 df-clel 2234 df-nfc 2381 df-ral 2533 df-rex 2534 df-v 2823 df-un 3224 df-in 3226 df-ss 3233 df-pw 3690 df-sn 3715 df-pr 3716 df-op 3718 df-uni 3936 df-br 4131 df-opab 4193 df-id 4438 df-xp 4780 df-rel 4781 df-cnv 4782 df-co 4783 df-dm 4784 df-rn 4785 df-res 4786 df-ima 4787 df-fun 5379 df-fn 5380 df-f 5381 df-f1 5382 df-fo 5383 df-f1o 5384 df-dom 7024 |
| This theorem is used by: cnvct 7097 ssct 7114 xpdom3m 7132 0domg 7137 mapdom1g 7147 phplem4dom 7163 nndomo 7165 phpm 7167 fict 7170 domfiexmid 7182 infnfi 7199 exmidfodomrlemr 7554 exmidfodomrlemrALT 7555 pw1dom2 7586 fihashss 11257 phicl2 12992 phibnd 12995 4sqlem11 13180 qnnen 13322 isnzr2 14491 sbthom 17071 |
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