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| Mirrors > Home > ILE Home > Th. List > fveq12d | Unicode version | ||
| Description: Equality deduction for function value. (Contributed by FL, 22-Dec-2008.) | 
| Ref | Expression | 
|---|---|
| fveq12d.1 | 
 | 
| fveq12d.2 | 
 | 
| Ref | Expression | 
|---|---|
| fveq12d | 
 | 
| Step | Hyp | Ref | Expression | 
|---|---|---|---|
| 1 | fveq12d.1 | 
. . 3
 | |
| 2 | 1 | fveq1d 5560 | 
. 2
 | 
| 3 | fveq12d.2 | 
. . 3
 | |
| 4 | 3 | fveq2d 5562 | 
. 2
 | 
| 5 | 2, 4 | eqtrd 2229 | 
1
 | 
| Colors of variables: wff set class | 
| Syntax hints:     | 
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 106 ax-ia2 107 ax-ia3 108 ax-io 710 ax-5 1461 ax-7 1462 ax-gen 1463 ax-ie1 1507 ax-ie2 1508 ax-8 1518 ax-10 1519 ax-11 1520 ax-i12 1521 ax-bndl 1523 ax-4 1524 ax-17 1540 ax-i9 1544 ax-ial 1548 ax-i5r 1549 ax-ext 2178 | 
| This theorem depends on definitions: df-bi 117 df-3an 982 df-tru 1367 df-nf 1475 df-sb 1777 df-clab 2183 df-cleq 2189 df-clel 2192 df-nfc 2328 df-rex 2481 df-v 2765 df-un 3161 df-sn 3628 df-pr 3629 df-op 3631 df-uni 3840 df-br 4034 df-iota 5219 df-fv 5266 | 
| This theorem is referenced by: nffvd 5570 fvsng 5758 fvmpopr2d 6059 tfrlem3ag 6367 tfrlem3a 6368 tfrlemi1 6390 tfr1onlem3ag 6395 omp1eomlem 7160 seq3shft 11003 climshft2 11471 fsum3 11552 ctiunctlemfo 12656 imasival 12949 gsumfzval 13034 gsumval2 13040 mulgfvalg 13251 mulgval 13252 mulgnndir 13281 mulgpropdg 13294 unitinvinv 13680 rlmvalg 14010 rsp0 14049 znval 14192 reldvg 14915 dvfvalap 14917 lgsval 15245 lgsneg 15265 | 
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