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Mirrors > Home > MPE Home > Th. List > Mathboxes > funbrafv2b | Structured version Visualization version GIF version |
Description: Function value in terms of a binary relation, analogous to funbrfv2b 6150. (Contributed by Alexander van der Vekens, 25-May-2017.) |
Ref | Expression |
---|---|
funbrafv2b | ⊢ (Fun 𝐹 → (𝐴𝐹𝐵 ↔ (𝐴 ∈ dom 𝐹 ∧ (𝐹'''𝐴) = 𝐵))) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | funrel 5821 | . . . 4 ⊢ (Fun 𝐹 → Rel 𝐹) | |
2 | releldm 5279 | . . . . 5 ⊢ ((Rel 𝐹 ∧ 𝐴𝐹𝐵) → 𝐴 ∈ dom 𝐹) | |
3 | 2 | ex 449 | . . . 4 ⊢ (Rel 𝐹 → (𝐴𝐹𝐵 → 𝐴 ∈ dom 𝐹)) |
4 | 1, 3 | syl 17 | . . 3 ⊢ (Fun 𝐹 → (𝐴𝐹𝐵 → 𝐴 ∈ dom 𝐹)) |
5 | 4 | pm4.71rd 665 | . 2 ⊢ (Fun 𝐹 → (𝐴𝐹𝐵 ↔ (𝐴 ∈ dom 𝐹 ∧ 𝐴𝐹𝐵))) |
6 | funbrafvb 39885 | . . 3 ⊢ ((Fun 𝐹 ∧ 𝐴 ∈ dom 𝐹) → ((𝐹'''𝐴) = 𝐵 ↔ 𝐴𝐹𝐵)) | |
7 | 6 | pm5.32da 671 | . 2 ⊢ (Fun 𝐹 → ((𝐴 ∈ dom 𝐹 ∧ (𝐹'''𝐴) = 𝐵) ↔ (𝐴 ∈ dom 𝐹 ∧ 𝐴𝐹𝐵))) |
8 | 5, 7 | bitr4d 270 | 1 ⊢ (Fun 𝐹 → (𝐴𝐹𝐵 ↔ (𝐴 ∈ dom 𝐹 ∧ (𝐹'''𝐴) = 𝐵))) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ↔ wb 195 ∧ wa 383 = wceq 1475 ∈ wcel 1977 class class class wbr 4583 dom cdm 5038 Rel wrel 5043 Fun wfun 5798 '''cafv 39843 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1713 ax-4 1728 ax-5 1827 ax-6 1875 ax-7 1922 ax-9 1986 ax-10 2006 ax-11 2021 ax-12 2034 ax-13 2234 ax-ext 2590 ax-sep 4709 ax-nul 4717 ax-pr 4833 |
This theorem depends on definitions: df-bi 196 df-or 384 df-an 385 df-3an 1033 df-tru 1478 df-ex 1696 df-nf 1701 df-sb 1868 df-eu 2462 df-mo 2463 df-clab 2597 df-cleq 2603 df-clel 2606 df-nfc 2740 df-ral 2901 df-rex 2902 df-rab 2905 df-v 3175 df-sbc 3403 df-dif 3543 df-un 3545 df-in 3547 df-ss 3554 df-nul 3875 df-if 4037 df-sn 4126 df-pr 4128 df-op 4132 df-uni 4373 df-br 4584 df-opab 4644 df-id 4953 df-xp 5044 df-rel 5045 df-cnv 5046 df-co 5047 df-dm 5048 df-res 5050 df-iota 5768 df-fun 5806 df-fn 5807 df-fv 5812 df-dfat 39845 df-afv 39846 |
This theorem is referenced by: (None) |
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