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| Mirrors > Home > MPE Home > Th. List > offun | Structured version Visualization version GIF version | ||
| Description: The function operation produces a function. (Contributed by SN, 23-Jul-2024.) |
| Ref | Expression |
|---|---|
| offun.1 | ⊢ (𝜑 → 𝐹 Fn 𝐴) |
| offun.2 | ⊢ (𝜑 → 𝐺 Fn 𝐵) |
| offun.3 | ⊢ (𝜑 → 𝐴 ∈ 𝑉) |
| offun.4 | ⊢ (𝜑 → 𝐵 ∈ 𝑊) |
| Ref | Expression |
|---|---|
| offun | ⊢ (𝜑 → Fun (𝐹 ∘f 𝑅𝐺)) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | offun.1 | . . 3 ⊢ (𝜑 → 𝐹 Fn 𝐴) | |
| 2 | offun.2 | . . 3 ⊢ (𝜑 → 𝐺 Fn 𝐵) | |
| 3 | offun.3 | . . 3 ⊢ (𝜑 → 𝐴 ∈ 𝑉) | |
| 4 | offun.4 | . . 3 ⊢ (𝜑 → 𝐵 ∈ 𝑊) | |
| 5 | eqid 2730 | . . 3 ⊢ (𝐴 ∩ 𝐵) = (𝐴 ∩ 𝐵) | |
| 6 | 1, 2, 3, 4, 5 | offn 7669 | . 2 ⊢ (𝜑 → (𝐹 ∘f 𝑅𝐺) Fn (𝐴 ∩ 𝐵)) |
| 7 | fnfun 6621 | . 2 ⊢ ((𝐹 ∘f 𝑅𝐺) Fn (𝐴 ∩ 𝐵) → Fun (𝐹 ∘f 𝑅𝐺)) | |
| 8 | 6, 7 | syl 17 | 1 ⊢ (𝜑 → Fun (𝐹 ∘f 𝑅𝐺)) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ∈ wcel 2109 ∩ cin 3916 Fun wfun 6508 Fn wfn 6509 (class class class)co 7390 ∘f cof 7654 |
| 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 1967 ax-7 2008 ax-8 2111 ax-9 2119 ax-10 2142 ax-11 2158 ax-12 2178 ax-ext 2702 ax-rep 5237 ax-sep 5254 ax-nul 5264 ax-pr 5390 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 848 df-3an 1088 df-tru 1543 df-fal 1553 df-ex 1780 df-nf 1784 df-sb 2066 df-mo 2534 df-eu 2563 df-clab 2709 df-cleq 2722 df-clel 2804 df-nfc 2879 df-ne 2927 df-ral 3046 df-rex 3055 df-reu 3357 df-rab 3409 df-v 3452 df-sbc 3757 df-csb 3866 df-dif 3920 df-un 3922 df-in 3924 df-ss 3934 df-nul 4300 df-if 4492 df-sn 4593 df-pr 4595 df-op 4599 df-uni 4875 df-iun 4960 df-br 5111 df-opab 5173 df-mpt 5192 df-id 5536 df-xp 5647 df-rel 5648 df-cnv 5649 df-co 5650 df-dm 5651 df-rn 5652 df-res 5653 df-ima 5654 df-iota 6467 df-fun 6516 df-fn 6517 df-f 6518 df-f1 6519 df-fo 6520 df-f1o 6521 df-fv 6522 df-ov 7393 df-oprab 7394 df-mpo 7395 df-of 7656 |
| This theorem is referenced by: mndpsuppss 18699 mndpfsupp 18701 lcomfsupp 20815 frlmphl 21697 frlmsslsp 21712 psrbagev1 21991 mhpmulcl 22043 |
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