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| Mirrors > Home > MPE Home > Th. List > reseq1 | Structured version Visualization version GIF version | ||
| Description: Equality theorem for restrictions. (Contributed by NM, 7-Aug-1994.) |
| Ref | Expression |
|---|---|
| reseq1 | ⊢ (𝐴 = 𝐵 → (𝐴 ↾ 𝐶) = (𝐵 ↾ 𝐶)) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | ineq1 4169 | . 2 ⊢ (𝐴 = 𝐵 → (𝐴 ∩ (𝐶 × V)) = (𝐵 ∩ (𝐶 × V))) | |
| 2 | df-res 5678 | . 2 ⊢ (𝐴 ↾ 𝐶) = (𝐴 ∩ (𝐶 × V)) | |
| 3 | df-res 5678 | . 2 ⊢ (𝐵 ↾ 𝐶) = (𝐵 ∩ (𝐶 × V)) | |
| 4 | 1, 2, 3 | 3eqtr4g 2826 | 1 ⊢ (𝐴 = 𝐵 → (𝐴 ↾ 𝐶) = (𝐵 ↾ 𝐶)) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: → wi 4 = wceq 1570 Vcvv 3458 ∩ cin 3907 × cxp 5664 ↾ cres 5668 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1828 ax-4 1842 ax-5 1943 ax-6 2000 ax-7 2041 ax-8 2148 ax-9 2156 ax-ext 2738 |
| This proof depends on definitions: df-bi 210 df-an 402 df-ex 1813 df-sb 2100 df-clab 2745 df-cleq 2758 df-clel 2841 df-rab 3420 df-in 3915 df-res 5678 |
| This theorem is used by: reseq1i 5979 reseq1d 5982 imaeq1 6062 fvtresfn 6999 eqfnun 7039 frrlem1 8292 frrlem13 8304 tfrlem12 8385 pmresg 8877 resixpfo 8943 mapunen 9144 fseqenlem1 10027 axdc3lem2 10453 axdc3lem4 10455 hashf1lem1 14512 lo1eq 15645 rlimeq 15646 symgfixfo 19540 lspextmo 21214 evlseu 22271 mdetunilem3 22808 mdetunilem4 22809 mdetunilem9 22814 lmbr 23452 ptuncnv 24001 iscau 25472 plyexmo 26511 relogf1o 26768 nosupprefixmo 27901 noinfprefixmo 27902 nosupcbv 27903 nosupno 27904 nosupdm 27905 nosupfv 27907 nosupres 27908 nosupbnd1lem1 27909 nosupbnd1lem3 27911 nosupbnd1lem5 27913 nosupbnd2 27917 noinfcbv 27918 noinfno 27919 noinfdm 27920 noinffv 27922 noinfres 27923 noinfbnd1lem1 27924 noinfbnd1lem3 27926 noinfbnd1lem5 27928 noinfbnd2 27932 extvfvv 33955 extvfvcl 33957 eulerpartlemt 34793 eulerpartlemgv 34795 eulerpartlemn 34803 eulerpart 34804 bnj1385 35252 bnj66 35280 bnj1234 35433 bnj1326 35446 bnj1463 35475 iscvm 35772 mbfresfi 38358 sdclem2 38434 isdivrngo 38642 evlselvlem 43361 evlselv 43362 mzpcompact2lem 43523 diophrw 43531 eldioph2lem1 43532 eldioph2lem2 43533 eldioph3 43538 diophin 43544 diophrex 43547 rexrabdioph 43562 2rexfrabdioph 43564 3rexfrabdioph 43565 4rexfrabdioph 43566 6rexfrabdioph 43567 7rexfrabdioph 43568 eldioph4b 43579 pwssplit4 43857 dvnprodlem1 46701 dvnprodlem3 46703 ismea 47206 isome 47249 |
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