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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 8907 | . . . 4 ⊢ (𝐹 ∈ (𝐴 ↑m 𝐵) → 𝐹:𝐵⟶𝐴) | |
4 | ffvelcdm 7115 | . . . . 5 ⊢ ((𝐹:𝐵⟶𝐴 ∧ 𝑋 ∈ 𝐵) → (𝐹‘𝑋) ∈ 𝐴) | |
5 | 4 | expcom 413 | . . . 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 2862 | . 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 1537 ∈ wcel 2108 ⟶wf 6569 ‘cfv 6573 (class class class)co 7448 ↑m cmap 8884 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1793 ax-4 1807 ax-5 1909 ax-6 1967 ax-7 2007 ax-8 2110 ax-9 2118 ax-10 2141 ax-11 2158 ax-12 2178 ax-ext 2711 ax-sep 5317 ax-nul 5324 ax-pow 5383 ax-pr 5447 ax-un 7770 |
This theorem depends on definitions: df-bi 207 df-an 396 df-or 847 df-3an 1089 df-tru 1540 df-fal 1550 df-ex 1778 df-nf 1782 df-sb 2065 df-mo 2543 df-eu 2572 df-clab 2718 df-cleq 2732 df-clel 2819 df-nfc 2895 df-ne 2947 df-ral 3068 df-rex 3077 df-rab 3444 df-v 3490 df-sbc 3805 df-csb 3922 df-dif 3979 df-un 3981 df-in 3983 df-ss 3993 df-nul 4353 df-if 4549 df-pw 4624 df-sn 4649 df-pr 4651 df-op 4655 df-uni 4932 df-iun 5017 df-br 5167 df-opab 5229 df-mpt 5250 df-id 5593 df-xp 5706 df-rel 5707 df-cnv 5708 df-co 5709 df-dm 5710 df-rn 5711 df-res 5712 df-ima 5713 df-iota 6525 df-fun 6575 df-fn 6576 df-f 6577 df-fv 6581 df-ov 7451 df-oprab 7452 df-mpo 7453 df-1st 8030 df-2nd 8031 df-map 8886 |
This theorem is referenced by: fsuppind 42545 1arympt1 48372 rrx2pxel 48445 rrx2pyel 48446 |
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