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| Mirrors > Home > MPE Home > Th. List > ifov | Structured version Visualization version GIF version | ||
| Description: Move a conditional outside of an operation. (Contributed by AV, 11-Nov-2019.) |
| Ref | Expression |
|---|---|
| ifov | ⊢ (𝐴if(𝜑, 𝐹, 𝐺)𝐵) = if(𝜑, (𝐴𝐹𝐵), (𝐴𝐺𝐵)) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | oveq 7418 | . 2 ⊢ (if(𝜑, 𝐹, 𝐺) = 𝐹 → (𝐴if(𝜑, 𝐹, 𝐺)𝐵) = (𝐴𝐹𝐵)) | |
| 2 | oveq 7418 | . 2 ⊢ (if(𝜑, 𝐹, 𝐺) = 𝐺 → (𝐴if(𝜑, 𝐹, 𝐺)𝐵) = (𝐴𝐺𝐵)) | |
| 3 | 1, 2 | ifsb 4502 | 1 ⊢ (𝐴if(𝜑, 𝐹, 𝐺)𝐵) = if(𝜑, (𝐴𝐹𝐵), (𝐴𝐺𝐵)) |
| Colors of variables: wff setvar class |
| Syntax hints: = wceq 1570 ifcif 4488 (class class class)co 7412 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1825 ax-4 1839 ax-5 1940 ax-6 1997 ax-7 2038 ax-8 2145 ax-9 2153 ax-ext 2735 |
| This theorem depends on definitions: df-bi 210 df-an 401 df-or 861 df-tru 1573 df-ex 1810 df-sb 2097 df-clab 2742 df-cleq 2755 df-clel 2838 df-v 3457 df-ss 3923 df-if 4489 df-uni 4874 df-br 5111 df-iota 6494 df-fv 6546 df-ov 7415 |
| This theorem is referenced by: monmatcollpw 22917 |
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