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Mirrors > Home > MPE Home > Th. List > mapfvd | Structured version Visualization version GIF version |
Description: The value of a function that maps from 𝐵 to 𝐴. (Contributed by AV, 2-Feb-2023.) |
Ref | Expression |
---|---|
mapfvd.m | ⊢ 𝑀 = (𝐴 ↑m 𝐵) |
mapfvd.f | ⊢ (𝜑 → 𝐹 ∈ 𝑀) |
mapfvd.x | ⊢ (𝜑 → 𝑋 ∈ 𝐵) |
Ref | Expression |
---|---|
mapfvd | ⊢ (𝜑 → (𝐹‘𝑋) ∈ 𝐴) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | mapfvd.f | . 2 ⊢ (𝜑 → 𝐹 ∈ 𝑀) | |
2 | mapfvd.x | . . . 4 ⊢ (𝜑 → 𝑋 ∈ 𝐵) | |
3 | elmapi 8421 | . . . 4 ⊢ (𝐹 ∈ (𝐴 ↑m 𝐵) → 𝐹:𝐵⟶𝐴) | |
4 | ffvelrn 6842 | . . . . 5 ⊢ ((𝐹:𝐵⟶𝐴 ∧ 𝑋 ∈ 𝐵) → (𝐹‘𝑋) ∈ 𝐴) | |
5 | 4 | expcom 416 | . . . 4 ⊢ (𝑋 ∈ 𝐵 → (𝐹:𝐵⟶𝐴 → (𝐹‘𝑋) ∈ 𝐴)) |
6 | 2, 3, 5 | syl2imc 41 | . . 3 ⊢ (𝐹 ∈ (𝐴 ↑m 𝐵) → (𝜑 → (𝐹‘𝑋) ∈ 𝐴)) |
7 | mapfvd.m | . . 3 ⊢ 𝑀 = (𝐴 ↑m 𝐵) | |
8 | 6, 7 | eleq2s 2930 | . 2 ⊢ (𝐹 ∈ 𝑀 → (𝜑 → (𝐹‘𝑋) ∈ 𝐴)) |
9 | 1, 8 | mpcom 38 | 1 ⊢ (𝜑 → (𝐹‘𝑋) ∈ 𝐴) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 = wceq 1536 ∈ wcel 2113 ⟶wf 6344 ‘cfv 6348 (class class class)co 7149 ↑m cmap 8399 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1795 ax-4 1809 ax-5 1910 ax-6 1969 ax-7 2014 ax-8 2115 ax-9 2123 ax-10 2144 ax-11 2160 ax-12 2176 ax-ext 2792 ax-sep 5196 ax-nul 5203 ax-pow 5259 ax-pr 5323 ax-un 7454 |
This theorem depends on definitions: df-bi 209 df-an 399 df-or 844 df-3an 1084 df-tru 1539 df-ex 1780 df-nf 1784 df-sb 2069 df-mo 2621 df-eu 2653 df-clab 2799 df-cleq 2813 df-clel 2892 df-nfc 2962 df-ne 3016 df-ral 3142 df-rex 3143 df-rab 3146 df-v 3493 df-sbc 3769 df-csb 3877 df-dif 3932 df-un 3934 df-in 3936 df-ss 3945 df-nul 4285 df-if 4461 df-pw 4534 df-sn 4561 df-pr 4563 df-op 4567 df-uni 4832 df-iun 4914 df-br 5060 df-opab 5122 df-mpt 5140 df-id 5453 df-xp 5554 df-rel 5555 df-cnv 5556 df-co 5557 df-dm 5558 df-rn 5559 df-res 5560 df-ima 5561 df-iota 6307 df-fun 6350 df-fn 6351 df-f 6352 df-fv 6356 df-ov 7152 df-oprab 7153 df-mpo 7154 df-1st 7682 df-2nd 7683 df-map 8401 |
This theorem is referenced by: rrx2pxel 44772 rrx2pyel 44773 |
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