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Related theorems GIF version |
| Description: Value of a function given by ordered pair abstraction. |
| Ref | Expression |
|---|---|
| fvopab4g.1 | ⊢ (x = A → B = C) |
| fvopab4g.2 | ⊢ F = {〈x, y〉∣(x ∈ D ∧ y = B)} |
| fvopab4.3 | ⊢ C ∈ V |
| Ref | Expression |
|---|---|
| fvopab4 | ⊢ (A ∈ D → (F ‘A) = C) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | fvopab4.3 | . 2 ⊢ C ∈ V | |
| 2 | fvopab4g.1 | . . 3 ⊢ (x = A → B = C) | |
| 3 | fvopab4g.2 | . . 3 ⊢ F = {〈x, y〉∣(x ∈ D ∧ y = B)} | |
| 4 | 2, 3 | fvopab4g 2870 | . 2 ⊢ ((A ∈ D ∧ C ∈ V) → (F ‘A) = C) |
| 5 | 1, 4 | mpan2 519 | 1 ⊢ (A ∈ D → (F ‘A) = C) |
| Colors of variables: wff set class |
| Syntax hints: → wi 2 ∧ wa 196 = wceq 1091 ∈ wcel 1092 Vcvv 1348 {copab 2055 ‘cfv 2422 |
| This theorem is referenced by: mapenlem1 3384 mapenlem2 3385 unfilem2 3439 aceq3lem 3555 aceq4 3557 aceq6a 3564 flvalt 4623 seqval2 4667 sqrval 4729 revalt 4794 imvalt 4795 cjvalt 4799 absvalt 4801 normvalt 5075 ocvalt 5161 occllem3 5182 projlem23 5215 pjmvalt 5245 hosvalt 5489 hodvalt 5490 strlem2 5692 |
| This theorem was proved from axioms: ax-1 3 ax-2 4 ax-3 5 ax-mp 6 ax-4 673 ax-5 674 ax-6 675 ax-7 676 ax-gen 677 ax-8 798 ax-9 799 ax-10 800 ax-11 801 ax-12 802 ax-13 804 ax-14 805 ax-16 922 ax-17 925 ax-ext 1074 ax-rep 1075 ax-pow 1077 |
| This theorem depends on definitions: df-bi 128 df-or 197 df-an 198 df-ex 679 df-sb 853 df-eu 1009 df-mo 1010 df-clab 1093 df-cleq 1097 df-clel 1099 df-rex 1206 df-v 1349 df-dif 1489 df-un 1490 df-in 1491 df-ss 1492 df-nul 1708 df-pw 1799 df-sn 1811 df-pr 1812 df-op 1815 df-uni 1920 df-br 2063 df-opab 2098 df-id 2125 df-xp 2424 df-rel 2425 df-cnv 2426 df-co 2427 df-dm 2428 df-rn 2429 df-res 2430 df-ima 2431 df-fun 2432 df-fv 2438 |