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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 4162 | . 2 ⊢ (𝐴 = 𝐵 → (𝐴 ∩ (𝐶 × V)) = (𝐵 ∩ (𝐶 × V))) | |
| 2 | df-res 5671 | . 2 ⊢ (𝐴 ↾ 𝐶) = (𝐴 ∩ (𝐶 × V)) | |
| 3 | df-res 5671 | . 2 ⊢ (𝐵 ↾ 𝐶) = (𝐵 ∩ (𝐶 × V)) | |
| 4 | 1, 2, 3 | 3eqtr4g 2822 | 1 ⊢ (𝐴 = 𝐵 → (𝐴 ↾ 𝐶) = (𝐵 ↾ 𝐶)) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: → wi 4 = wceq 1570 Vcvv 3453 ∩ cin 3901 × cxp 5657 ↾ cres 5661 |
| 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 2147 ax-9 2155 ax-ext 2734 |
| This proof depends on definitions: df-bi 210 df-an 402 df-ex 1813 df-sb 2100 df-clab 2741 df-cleq 2754 df-clel 2837 df-rab 3415 df-in 3909 df-res 5671 |
| This theorem is used by: reseq1i 5972 reseq1d 5975 imaeq1 6055 fvtresfn 6993 eqfnun 7033 frrlem1 8289 frrlem13 8301 tfrlem12 8382 pmresg 8881 resixpfo 8947 mapunen 9148 fseqenlem1 10031 axdc3lem2 10457 axdc3lem4 10459 hashf1lem1 14524 lo1eq 15659 rlimeq 15660 symgfixfo 19572 lspextmo 21246 evlseu 22305 mdetunilem3 22842 mdetunilem4 22843 mdetunilem9 22848 lmbr 23489 ptuncnv 24039 iscau 25510 plyexmo 26552 relogf1o 26811 nosupprefixmo 27944 noinfprefixmo 27945 nosupcbv 27946 nosupno 27947 nosupdm 27948 nosupfv 27950 nosupres 27951 nosupbnd1lem1 27952 nosupbnd1lem3 27954 nosupbnd1lem5 27956 nosupbnd2 27960 noinfcbv 27961 noinfno 27962 noinfdm 27963 noinffv 27965 noinfres 27966 noinfbnd1lem1 27967 noinfbnd1lem3 27969 noinfbnd1lem5 27971 noinfbnd2 27975 extvfvv 34052 extvfvcl 34054 eulerpartlemt 34890 eulerpartlemgv 34892 eulerpartlemn 34900 eulerpart 34901 bnj1385 35349 bnj66 35377 bnj1234 35530 bnj1326 35543 bnj1463 35572 iscvm 35846 mbfresfi 38423 sdclem2 38500 isdivrngo 38708 evlselvlem 43442 evlselv 43443 mzpcompact2lem 43604 diophrw 43612 eldioph2lem1 43613 eldioph2lem2 43614 eldioph3 43619 diophin 43625 diophrex 43628 rexrabdioph 43643 2rexfrabdioph 43645 3rexfrabdioph 43646 4rexfrabdioph 43647 6rexfrabdioph 43648 7rexfrabdioph 43649 eldioph4b 43660 pwssplit4 43938 dvnprodlem1 46782 dvnprodlem3 46784 ismea 47287 isome 47330 tmachlem-agreeself 47772 |
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