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Mirrors > Home > MPE Home > Th. List > csbfvgOLD | Unicode version |
Description: Substitution for a function value. (Contributed by NM, 1-Jan-2006.) Obsolete as of 20-Aug-2018. Use csbfv 5909 instead. (New usage is discouraged.) (Proof modification is discouraged.) |
Ref | Expression |
---|---|
csbfvgOLD |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | csbfv2g 5908 | . 2 | |
2 | csbvarg 3848 | . . 3 | |
3 | 2 | fveq2d 5875 | . 2 |
4 | 1, 3 | eqtrd 2498 | 1 |
Colors of variables: wff setvar class |
Syntax hints: -> wi 4 = wceq 1395
e. wcel 1818 [_ csb 3434 ` cfv 5593 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1618 ax-4 1631 ax-5 1704 ax-6 1747 ax-7 1790 ax-8 1820 ax-9 1822 ax-10 1837 ax-11 1842 ax-12 1854 ax-13 1999 ax-ext 2435 ax-nul 4581 ax-pow 4630 |
This theorem depends on definitions: df-bi 185 df-or 370 df-an 371 df-3an 975 df-tru 1398 df-fal 1401 df-ex 1613 df-nf 1617 df-sb 1740 df-eu 2286 df-mo 2287 df-clab 2443 df-cleq 2449 df-clel 2452 df-nfc 2607 df-ne 2654 df-ral 2812 df-rex 2813 df-rab 2816 df-v 3111 df-sbc 3328 df-csb 3435 df-dif 3478 df-un 3480 df-in 3482 df-ss 3489 df-nul 3785 df-if 3942 df-sn 4030 df-pr 4032 df-op 4036 df-uni 4250 df-br 4453 df-dm 5014 df-iota 5556 df-fv 5601 |
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