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Mirrors > Home > MPE Home > Th. List > ssdomg | Structured version Visualization version GIF 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 | ⊢ (𝐵 ∈ 𝑉 → (𝐴 ⊆ 𝐵 → 𝐴 ≼ 𝐵)) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | ssexg 5285 | . . 3 ⊢ ((𝐴 ⊆ 𝐵 ∧ 𝐵 ∈ 𝑉) → 𝐴 ∈ V) | |
2 | simpr 485 | . . 3 ⊢ ((𝐴 ⊆ 𝐵 ∧ 𝐵 ∈ 𝑉) → 𝐵 ∈ 𝑉) | |
3 | f1oi 6827 | . . . . . . . . 9 ⊢ ( I ↾ 𝐴):𝐴–1-1-onto→𝐴 | |
4 | dff1o3 6795 | . . . . . . . . 9 ⊢ (( I ↾ 𝐴):𝐴–1-1-onto→𝐴 ↔ (( I ↾ 𝐴):𝐴–onto→𝐴 ∧ Fun ◡( I ↾ 𝐴))) | |
5 | 3, 4 | mpbi 229 | . . . . . . . 8 ⊢ (( I ↾ 𝐴):𝐴–onto→𝐴 ∧ Fun ◡( I ↾ 𝐴)) |
6 | 5 | simpli 484 | . . . . . . 7 ⊢ ( I ↾ 𝐴):𝐴–onto→𝐴 |
7 | fof 6761 | . . . . . . 7 ⊢ (( I ↾ 𝐴):𝐴–onto→𝐴 → ( I ↾ 𝐴):𝐴⟶𝐴) | |
8 | 6, 7 | ax-mp 5 | . . . . . 6 ⊢ ( I ↾ 𝐴):𝐴⟶𝐴 |
9 | fss 6690 | . . . . . 6 ⊢ ((( I ↾ 𝐴):𝐴⟶𝐴 ∧ 𝐴 ⊆ 𝐵) → ( I ↾ 𝐴):𝐴⟶𝐵) | |
10 | 8, 9 | mpan 688 | . . . . 5 ⊢ (𝐴 ⊆ 𝐵 → ( I ↾ 𝐴):𝐴⟶𝐵) |
11 | funi 6538 | . . . . . . 7 ⊢ Fun I | |
12 | cnvi 6099 | . . . . . . . 8 ⊢ ◡ I = I | |
13 | 12 | funeqi 6527 | . . . . . . 7 ⊢ (Fun ◡ I ↔ Fun I ) |
14 | 11, 13 | mpbir 230 | . . . . . 6 ⊢ Fun ◡ I |
15 | funres11 6583 | . . . . . 6 ⊢ (Fun ◡ I → Fun ◡( I ↾ 𝐴)) | |
16 | 14, 15 | ax-mp 5 | . . . . 5 ⊢ Fun ◡( I ↾ 𝐴) |
17 | df-f1 6506 | . . . . 5 ⊢ (( I ↾ 𝐴):𝐴–1-1→𝐵 ↔ (( I ↾ 𝐴):𝐴⟶𝐵 ∧ Fun ◡( I ↾ 𝐴))) | |
18 | 10, 16, 17 | sylanblrc 590 | . . . 4 ⊢ (𝐴 ⊆ 𝐵 → ( I ↾ 𝐴):𝐴–1-1→𝐵) |
19 | 18 | adantr 481 | . . 3 ⊢ ((𝐴 ⊆ 𝐵 ∧ 𝐵 ∈ 𝑉) → ( I ↾ 𝐴):𝐴–1-1→𝐵) |
20 | f1dom2g 8916 | . . 3 ⊢ ((𝐴 ∈ V ∧ 𝐵 ∈ 𝑉 ∧ ( I ↾ 𝐴):𝐴–1-1→𝐵) → 𝐴 ≼ 𝐵) | |
21 | 1, 2, 19, 20 | syl3anc 1371 | . 2 ⊢ ((𝐴 ⊆ 𝐵 ∧ 𝐵 ∈ 𝑉) → 𝐴 ≼ 𝐵) |
22 | 21 | expcom 414 | 1 ⊢ (𝐵 ∈ 𝑉 → (𝐴 ⊆ 𝐵 → 𝐴 ≼ 𝐵)) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ∧ wa 396 ∈ wcel 2106 Vcvv 3446 ⊆ wss 3913 class class class wbr 5110 I cid 5535 ◡ccnv 5637 ↾ cres 5640 Fun wfun 6495 ⟶wf 6497 –1-1→wf1 6498 –onto→wfo 6499 –1-1-onto→wf1o 6500 ≼ cdom 8888 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1797 ax-4 1811 ax-5 1913 ax-6 1971 ax-7 2011 ax-8 2108 ax-9 2116 ax-10 2137 ax-12 2171 ax-ext 2702 ax-sep 5261 ax-nul 5268 ax-pow 5325 ax-pr 5389 ax-un 7677 |
This theorem depends on definitions: df-bi 206 df-an 397 df-or 846 df-3an 1089 df-tru 1544 df-fal 1554 df-ex 1782 df-nf 1786 df-sb 2068 df-mo 2533 df-eu 2562 df-clab 2709 df-cleq 2723 df-clel 2809 df-ral 3061 df-rex 3070 df-rab 3406 df-v 3448 df-dif 3916 df-un 3918 df-in 3920 df-ss 3930 df-nul 4288 df-if 4492 df-pw 4567 df-sn 4592 df-pr 4594 df-op 4598 df-uni 4871 df-br 5111 df-opab 5173 df-id 5536 df-xp 5644 df-rel 5645 df-cnv 5646 df-co 5647 df-dm 5648 df-rn 5649 df-res 5650 df-ima 5651 df-fun 6503 df-fn 6504 df-f 6505 df-f1 6506 df-fo 6507 df-f1o 6508 df-dom 8892 |
This theorem is referenced by: cnvct 8985 ssctOLD 9003 undomOLD 9011 xpdom3 9021 domunsncan 9023 sucdom2OLD 9033 0domgOLD 9052 domtriord 9074 sdomel 9075 sdomdif 9076 onsdominel 9077 pwdom 9080 2pwuninel 9083 mapdom1 9093 mapdom3 9100 limenpsi 9103 phpOLD 9173 php2OLD 9174 php3OLD 9175 nndomogOLD 9177 onomeneqOLD 9180 unbnn 9250 nnsdomgOLD 9254 fodomfi 9276 fidomdm 9280 pwfilemOLD 9297 hartogslem1 9487 hartogs 9489 card2on 9499 wdompwdom 9523 wdom2d 9525 wdomima2g 9531 unxpwdom2 9533 unxpwdom 9534 harwdom 9536 r1sdom 9719 tskwe 9895 carddomi2 9915 cardsdomelir 9918 cardsdomel 9919 harcard 9923 carduni 9926 cardmin2 9944 infxpenlem 9958 ssnum 9984 acnnum 9997 fodomfi2 10005 inffien 10008 alephordi 10019 dfac12lem2 10089 djudoml 10129 cdainflem 10132 djuinf 10133 unctb 10150 infunabs 10152 infdju 10153 infdif 10154 infdif2 10155 infmap2 10163 ackbij2 10188 fictb 10190 cfslb 10211 fincssdom 10268 fin67 10340 fin1a2lem12 10356 axcclem 10402 dmct 10469 brdom3 10473 brdom5 10474 brdom4 10475 imadomg 10479 fnct 10482 mptct 10483 ondomon 10508 alephval2 10517 alephadd 10522 alephmul 10523 alephexp1 10524 alephsuc3 10525 alephexp2 10526 alephreg 10527 pwcfsdom 10528 cfpwsdom 10529 canthnum 10594 pwfseqlem5 10608 pwxpndom2 10610 pwdjundom 10612 gchaleph 10616 gchaleph2 10617 gchac 10626 winainflem 10638 gchina 10644 tsksdom 10701 tskinf 10714 inttsk 10719 inar1 10720 inatsk 10723 tskord 10725 tskcard 10726 grudomon 10762 gruina 10763 axgroth2 10770 axgroth6 10773 grothac 10775 hashun2 14293 hashss 14319 hashsslei 14336 isercoll 15564 o1fsum 15709 incexc2 15734 znnen 16105 qnnen 16106 rpnnen 16120 ruc 16136 phicl2 16651 phibnd 16654 4sqlem11 16838 vdwlem11 16874 0ram 16903 mreexdomd 17543 pgpssslw 19410 fislw 19421 cctop 22393 1stcfb 22833 2ndc1stc 22839 1stcrestlem 22840 2ndcctbss 22843 2ndcdisj2 22845 2ndcsep 22847 dis2ndc 22848 csdfil 23282 ufilen 23318 opnreen 24231 rectbntr0 24232 ovolctb2 24893 uniiccdif 24979 dyadmbl 25001 opnmblALT 25004 vitali 25014 mbfimaopnlem 25056 mbfsup 25065 fta1blem 25570 aannenlem3 25727 ppiwordi 26548 musum 26577 ppiub 26589 chpub 26605 dirith2 26913 upgrex 28106 rabfodom 31496 abrexdomjm 31497 mptctf 31702 locfinreflem 32510 esumcst 32751 omsmeas 33012 sibfof 33029 subfaclefac 33857 erdszelem10 33881 snmlff 34010 finminlem 34866 iccioo01 35871 isinf2 35949 pibt2 35961 phpreu 36135 lindsdom 36145 poimirlem26 36177 mblfinlem1 36188 abrexdom 36262 heiborlem3 36345 ctbnfien 41199 pellexlem4 41213 pellexlem5 41214 ttac 41418 idomodle 41581 idomsubgmo 41583 iscard5 41930 uzct 43393 rn1st 43623 smfaddlem2 45125 smfmullem4 45155 smfpimbor1lem1 45159 aacllem 47368 |
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