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| Mirrors > Home > MPE Home > Th. List > ffnov | Structured version Visualization version GIF version | ||
| Description: An operation maps to a class to which all values belong. (Contributed by NM, 7-Feb-2004.) |
| Ref | Expression |
|---|---|
| ffnov | ⊢ (𝐹:(𝐴 × 𝐵)⟶𝐶 ↔ (𝐹 Fn (𝐴 × 𝐵) ∧ ∀𝑥 ∈ 𝐴 ∀𝑦 ∈ 𝐵 (𝑥𝐹𝑦) ∈ 𝐶)) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | ffnfv 7094 | . 2 ⊢ (𝐹:(𝐴 × 𝐵)⟶𝐶 ↔ (𝐹 Fn (𝐴 × 𝐵) ∧ ∀𝑤 ∈ (𝐴 × 𝐵)(𝐹‘𝑤) ∈ 𝐶)) | |
| 2 | fveq2 6861 | . . . . . 6 ⊢ (𝑤 = 〈𝑥, 𝑦〉 → (𝐹‘𝑤) = (𝐹‘〈𝑥, 𝑦〉)) | |
| 3 | df-ov 7393 | . . . . . 6 ⊢ (𝑥𝐹𝑦) = (𝐹‘〈𝑥, 𝑦〉) | |
| 4 | 2, 3 | eqtr4di 2783 | . . . . 5 ⊢ (𝑤 = 〈𝑥, 𝑦〉 → (𝐹‘𝑤) = (𝑥𝐹𝑦)) |
| 5 | 4 | eleq1d 2814 | . . . 4 ⊢ (𝑤 = 〈𝑥, 𝑦〉 → ((𝐹‘𝑤) ∈ 𝐶 ↔ (𝑥𝐹𝑦) ∈ 𝐶)) |
| 6 | 5 | ralxp 5808 | . . 3 ⊢ (∀𝑤 ∈ (𝐴 × 𝐵)(𝐹‘𝑤) ∈ 𝐶 ↔ ∀𝑥 ∈ 𝐴 ∀𝑦 ∈ 𝐵 (𝑥𝐹𝑦) ∈ 𝐶) |
| 7 | 6 | anbi2i 623 | . 2 ⊢ ((𝐹 Fn (𝐴 × 𝐵) ∧ ∀𝑤 ∈ (𝐴 × 𝐵)(𝐹‘𝑤) ∈ 𝐶) ↔ (𝐹 Fn (𝐴 × 𝐵) ∧ ∀𝑥 ∈ 𝐴 ∀𝑦 ∈ 𝐵 (𝑥𝐹𝑦) ∈ 𝐶)) |
| 8 | 1, 7 | bitri 275 | 1 ⊢ (𝐹:(𝐴 × 𝐵)⟶𝐶 ↔ (𝐹 Fn (𝐴 × 𝐵) ∧ ∀𝑥 ∈ 𝐴 ∀𝑦 ∈ 𝐵 (𝑥𝐹𝑦) ∈ 𝐶)) |
| Colors of variables: wff setvar class |
| Syntax hints: ↔ wb 206 ∧ wa 395 = wceq 1540 ∈ wcel 2109 ∀wral 3045 〈cop 4598 × cxp 5639 Fn wfn 6509 ⟶wf 6510 ‘cfv 6514 (class class class)co 7390 |
| 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-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-rab 3409 df-v 3452 df-sbc 3757 df-csb 3866 df-dif 3920 df-un 3922 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-iota 6467 df-fun 6516 df-fn 6517 df-f 6518 df-fv 6522 df-ov 7393 |
| This theorem is referenced by: fovcld 7519 cantnfvalf 9625 axaddf 11105 axmulf 11106 mulnzcnf 11831 frmdplusg 18788 gass 19240 sylow2blem2 19558 matecl 22319 txdis1cn 23529 isxmet2d 24222 prdsmet 24265 imasdsf1olem 24268 imasf1oxmet 24270 imasf1omet 24271 xmetresbl 24332 comet 24408 tgqioo 24695 xrtgioo 24702 opnmblALT 25511 mpodvdsmulf1o 27111 dvdsmulf1o 27113 hhssabloilem 31197 pstmxmet 33894 xrge0pluscn 33937 mpomulnzcnf 36294 isbndx 37783 isbnd3 37785 isbnd3b 37786 prdsbnd 37794 isdrngo2 37959 aks6d1c6lem3 42167 clintopcllaw 48203 |
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