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| Mirrors > Home > MPE Home > Th. List > ofmresex | Structured version Visualization version GIF version | ||
| Description: Existence of a restriction of the function operation map. (Contributed by NM, 20-Oct-2014.) |
| Ref | Expression |
|---|---|
| ofmresex.a | ⊢ (𝜑 → 𝐴 ∈ 𝑉) |
| ofmresex.b | ⊢ (𝜑 → 𝐵 ∈ 𝑊) |
| Ref | Expression |
|---|---|
| ofmresex | ⊢ (𝜑 → ( ∘f 𝑅 ↾ (𝐴 × 𝐵)) ∈ V) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | ofmresex.a | . . 3 ⊢ (𝜑 → 𝐴 ∈ 𝑉) | |
| 2 | ofmresex.b | . . 3 ⊢ (𝜑 → 𝐵 ∈ 𝑊) | |
| 3 | 1, 2 | xpexd 7746 | . 2 ⊢ (𝜑 → (𝐴 × 𝐵) ∈ V) |
| 4 | ofexg 7679 | . 2 ⊢ ((𝐴 × 𝐵) ∈ V → ( ∘f 𝑅 ↾ (𝐴 × 𝐵)) ∈ V) | |
| 5 | 3, 4 | syl 18 | 1 ⊢ (𝜑 → ( ∘f 𝑅 ↾ (𝐴 × 𝐵)) ∈ V) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ∈ wcel 2143 Vcvv 3455 × cxp 5659 ↾ cres 5663 ∘f cof 7672 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1825 ax-4 1839 ax-5 1940 ax-6 1997 ax-7 2038 ax-8 2145 ax-9 2153 ax-10 2176 ax-11 2192 ax-12 2213 ax-ext 2735 ax-rep 5238 ax-sep 5257 ax-nul 5269 ax-pow 5336 ax-pr 5404 ax-un 7732 |
| This theorem depends on definitions: df-bi 210 df-an 401 df-or 861 df-3an 1105 df-tru 1573 df-fal 1583 df-ex 1810 df-nf 1814 df-sb 2097 df-mo 2567 df-eu 2597 df-clab 2742 df-cleq 2755 df-clel 2838 df-nfc 2912 df-ne 2959 df-ral 3080 df-rex 3090 df-reu 3370 df-rab 3417 df-v 3457 df-sbc 3745 df-csb 3854 df-dif 3908 df-un 3910 df-in 3912 df-ss 3922 df-nul 4287 df-if 4488 df-pw 4564 df-sn 4590 df-pr 4592 df-op 4596 df-uni 4873 df-iun 4958 df-br 5110 df-opab 5174 df-mpt 5193 df-id 5556 df-xp 5667 df-rel 5668 df-cnv 5669 df-co 5670 df-dm 5671 df-rn 5672 df-res 5673 df-ima 5674 df-iota 6492 df-fun 6538 df-fn 6539 df-f 6540 df-f1 6541 df-fo 6542 df-f1o 6543 df-fv 6544 df-oprab 7414 df-mpo 7415 df-of 7674 |
| This theorem is referenced by: ldualfvadd 39902 |
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