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 5345 | . . 3 ⊢ (𝐴 ⊆ 𝐵 → (𝐶 ↾ 𝐴) ⊆ (𝐶 ↾ 𝐵)) | |
2 | rnss 5275 | . . 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 5051 | . 2 ⊢ (𝐶 “ 𝐴) = ran (𝐶 ↾ 𝐴) | |
5 | df-ima 5051 | . 2 ⊢ (𝐶 “ 𝐵) = ran (𝐶 ↾ 𝐵) | |
6 | 3, 4, 5 | 3sstr4g 3609 | 1 ⊢ (𝐴 ⊆ 𝐵 → (𝐶 “ 𝐴) ⊆ (𝐶 “ 𝐵)) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ⊆ wss 3540 ran crn 5039 ↾ cres 5040 “ cima 5041 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1713 ax-4 1728 ax-5 1827 ax-6 1875 ax-7 1922 ax-10 2006 ax-11 2021 ax-12 2034 ax-13 2234 ax-ext 2590 |
This theorem depends on definitions: df-bi 196 df-or 384 df-an 385 df-3an 1033 df-tru 1478 df-ex 1696 df-nf 1701 df-sb 1868 df-clab 2597 df-cleq 2603 df-clel 2606 df-nfc 2740 df-rab 2905 df-v 3175 df-dif 3543 df-un 3545 df-in 3547 df-ss 3554 df-nul 3875 df-if 4037 df-sn 4126 df-pr 4128 df-op 4132 df-br 4584 df-opab 4644 df-xp 5044 df-cnv 5046 df-dm 5048 df-rn 5049 df-res 5050 df-ima 5051 |
This theorem is referenced by: funimass1 5885 funimass2 5886 fvimacnv 6240 f1imass 6422 ecinxp 7709 sbthlem1 7955 sbthlem2 7956 php3 8031 ordtypelem2 8307 tcrank 8630 limsupgord 14051 isercoll 14246 isacs1i 16141 gsumzf1o 18136 dprdres 18250 dprd2da 18264 dmdprdsplit2lem 18267 lmhmlsp 18870 f1lindf 19980 iscnp4 20877 cnpco 20881 cncls2i 20884 cnntri 20885 cnrest2 20900 cnpresti 20902 cnprest 20903 1stcfb 21058 xkococnlem 21272 qtopval2 21309 tgqtop 21325 qtoprest 21330 kqdisj 21345 regr1lem 21352 kqreglem1 21354 kqreglem2 21355 kqnrmlem1 21356 kqnrmlem2 21357 nrmhmph 21407 fbasrn 21498 elfm2 21562 fmfnfmlem1 21568 fmco 21575 flffbas 21609 cnpflf2 21614 cnextcn 21681 metcnp3 22155 metustto 22168 cfilucfil 22174 uniioombllem3 23159 dyadmbllem 23173 mbfconstlem 23202 i1fima2 23252 itg2gt0 23333 ellimc3 23449 limcflf 23451 limcresi 23455 limciun 23464 lhop 23583 ig1peu 23735 ig1pdvds 23740 psercnlem2 23982 dvloglem 24194 efopn 24204 txomap 29229 tpr2rico 29286 cvmsss2 30510 cvmopnlem 30514 cvmliftmolem1 30517 cvmliftlem15 30534 cvmlift2lem9 30547 nofulllem3 31103 imadifss 32554 poimirlem1 32580 poimirlem2 32581 poimirlem3 32582 poimirlem15 32594 poimirlem30 32609 dvtan 32630 heibor1lem 32778 isnumbasabl 36695 isnumbasgrp 36696 dfacbasgrp 36697 trclimalb2 37037 frege81d 37058 limccog 38687 |
Copyright terms: Public domain | W3C validator |