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| Mirrors > Home > MPE Home > Th. List > fvif | Structured version Visualization version GIF version | ||
| Description: Move a conditional outside of a function. (Contributed by Jeff Madsen, 2-Sep-2009.) |
| Ref | Expression |
|---|---|
| fvif | ⊢ (𝐹‘if(𝜑, 𝐴, 𝐵)) = if(𝜑, (𝐹‘𝐴), (𝐹‘𝐵)) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | fveq2 6885 | . 2 ⊢ (if(𝜑, 𝐴, 𝐵) = 𝐴 → (𝐹‘if(𝜑, 𝐴, 𝐵)) = (𝐹‘𝐴)) | |
| 2 | fveq2 6885 | . 2 ⊢ (if(𝜑, 𝐴, 𝐵) = 𝐵 → (𝐹‘if(𝜑, 𝐴, 𝐵)) = (𝐹‘𝐵)) | |
| 3 | 1, 2 | ifsb 4495 | 1 ⊢ (𝐹‘if(𝜑, 𝐴, 𝐵)) = if(𝜑, (𝐹‘𝐴), (𝐹‘𝐵)) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: = wceq 1569 ifcif 4481 ‘cfv 6538 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1827 ax-4 1841 ax-5 1942 ax-6 1999 ax-7 2040 ax-8 2146 ax-9 2154 ax-ext 2732 |
| This proof depends on definitions: df-bi 210 df-an 402 df-or 862 df-3an 1105 df-tru 1572 df-fal 1582 df-ex 1812 df-sb 2099 df-clab 2739 df-cleq 2752 df-clel 2835 df-rab 3413 df-v 3452 df-ss 3896 df-dif 4047 df-un 4151 df-nul 4279 df-if 4482 df-sn 4585 df-pr 4587 df-op 4835 df-uni 4867 df-br 5103 df-iota 6494 df-fv 6546 |
| This theorem is used by: ccatco 14990 sumeq2ii 15865 prodeq2ii 16085 ruclem1 16404 xpsrnbas 17748 rhmmpl 22703 rhmply1vr1 22707 mat2pmat1 23055 decpmatid 23093 pmatcollpwscmatlem1 23112 copco 25344 pcopt 25348 pcopt2 25349 limccnp 26216 prmorcht 27510 pclogsum 27547 esplyfval0 34242 esplyfv1 34247 mblfinlem2 38669 ftc1anclem8 38711 ftc1anc 38712 rhmpsr 43704 fvifeq 48443 parmapfunc 50868 |
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