![]() |
Metamath Proof Explorer |
< Previous
Next >
Nearby theorems |
|
Mirrors > Home > MPE Home > Th. List > imass2 | Structured version Visualization version GIF version |
Description: Subset theorem for image. Exercise 22(a) of [Enderton] p. 53. (Contributed by NM, 22-Mar-1998.) |
Ref | Expression |
---|---|
imass2 | ⊢ (𝐴 ⊆ 𝐵 → (𝐶 “ 𝐴) ⊆ (𝐶 “ 𝐵)) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | ssres2 5970 | . . 3 ⊢ (𝐴 ⊆ 𝐵 → (𝐶 ↾ 𝐴) ⊆ (𝐶 ↾ 𝐵)) | |
2 | rnss 5899 | . . 3 ⊢ ((𝐶 ↾ 𝐴) ⊆ (𝐶 ↾ 𝐵) → ran (𝐶 ↾ 𝐴) ⊆ ran (𝐶 ↾ 𝐵)) | |
3 | 1, 2 | syl 17 | . 2 ⊢ (𝐴 ⊆ 𝐵 → ran (𝐶 ↾ 𝐴) ⊆ ran (𝐶 ↾ 𝐵)) |
4 | df-ima 5651 | . 2 ⊢ (𝐶 “ 𝐴) = ran (𝐶 ↾ 𝐴) | |
5 | df-ima 5651 | . 2 ⊢ (𝐶 “ 𝐵) = ran (𝐶 ↾ 𝐵) | |
6 | 3, 4, 5 | 3sstr4g 3992 | 1 ⊢ (𝐴 ⊆ 𝐵 → (𝐶 “ 𝐴) ⊆ (𝐶 “ 𝐵)) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ⊆ wss 3913 ran crn 5639 ↾ cres 5640 “ cima 5641 |
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-ext 2702 |
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-sb 2068 df-clab 2709 df-cleq 2723 df-clel 2809 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-sn 4592 df-pr 4594 df-op 4598 df-br 5111 df-opab 5173 df-xp 5644 df-cnv 5646 df-dm 5648 df-rn 5649 df-res 5650 df-ima 5651 |
This theorem is referenced by: funimass1 6588 funimass2 6589 fvimacnv 7008 fnfvimad 7189 f1imass 7216 ecinxp 8738 sbthlem1 9034 sbthlem2 9035 php3 9163 php3OLD 9175 ordtypelem2 9464 tcrank 9829 limsupgord 15366 isercoll 15564 isacs1i 17551 gsumzf1o 19703 dprdres 19821 dprd2da 19835 dmdprdsplit2lem 19838 lmhmlsp 20567 f1lindf 21265 iscnp4 22651 cnpco 22655 cncls2i 22658 cnntri 22659 cnrest2 22674 cnpresti 22676 cnprest 22677 1stcfb 22833 xkococnlem 23047 qtopval2 23084 tgqtop 23100 qtoprest 23105 kqdisj 23120 regr1lem 23127 kqreglem1 23129 kqreglem2 23130 kqnrmlem1 23131 kqnrmlem2 23132 nrmhmph 23182 fbasrn 23272 elfm2 23336 fmfnfmlem1 23342 fmco 23349 flffbas 23383 cnpflf2 23388 cnextcn 23455 metcnp3 23933 metustto 23946 cfilucfil 23952 uniioombllem3 24986 dyadmbllem 25000 mbfconstlem 25028 i1fima2 25080 itg2gt0 25162 ellimc3 25280 limcflf 25282 limcresi 25286 limciun 25295 lhop 25417 ig1peu 25573 ig1pdvds 25578 psercnlem2 25820 dvloglem 26040 efopn 26050 noetalem1 27126 madess 27249 cofcut1 27282 negsproplem2 27370 fnpreimac 31654 fsuppinisegfi 31669 gsumpart 31967 txomap 32504 zarcmplem 32551 tpr2rico 32582 pthhashvtx 33808 cvmsss2 33955 cvmopnlem 33959 cvmliftmolem1 33962 cvmliftlem15 33979 cvmlift2lem9 33992 imadifss 36126 poimirlem1 36152 poimirlem2 36153 poimirlem3 36154 poimirlem15 36166 poimirlem30 36181 dvtan 36201 heibor1lem 36341 isnumbasabl 41491 isnumbasgrp 41492 dfacbasgrp 41493 trclimalb2 42120 frege81d 42141 imass2d 43611 limccog 43981 liminfgord 44115 |
Copyright terms: Public domain | W3C validator |