| Intuitionistic Logic Explorer |
< Previous
Next >
Nearby theorems |
||
| Mirrors > Home > ILE Home > Th. List > ofmresex | 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 | xpexg 4840 | . . 3 ⊢ ((𝐴 ∈ 𝑉 ∧ 𝐵 ∈ 𝑊) → (𝐴 × 𝐵) ∈ V) | |
| 4 | 1, 2, 3 | syl2anc 411 | . 2 ⊢ (𝜑 → (𝐴 × 𝐵) ∈ V) |
| 5 | ofexg 6240 | . 2 ⊢ ((𝐴 × 𝐵) ∈ V → ( ∘𝑓 𝑅 ↾ (𝐴 × 𝐵)) ∈ V) | |
| 6 | 4, 5 | syl 14 | 1 ⊢ (𝜑 → ( ∘𝑓 𝑅 ↾ (𝐴 × 𝐵)) ∈ V) |
| Colors of variables: wff set class |
| Syntax hints: → wi 4 ∈ wcel 2202 Vcvv 2802 × cxp 4723 ↾ cres 4727 ∘𝑓 cof 6233 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 106 ax-ia2 107 ax-ia3 108 ax-io 716 ax-5 1495 ax-7 1496 ax-gen 1497 ax-ie1 1541 ax-ie2 1542 ax-8 1552 ax-10 1553 ax-11 1554 ax-i12 1555 ax-bndl 1557 ax-4 1558 ax-17 1574 ax-i9 1578 ax-ial 1582 ax-i5r 1583 ax-13 2204 ax-14 2205 ax-ext 2213 ax-coll 4204 ax-sep 4207 ax-pow 4264 ax-pr 4299 ax-un 4530 |
| This theorem depends on definitions: df-bi 117 df-3an 1006 df-tru 1400 df-nf 1509 df-sb 1811 df-eu 2082 df-mo 2083 df-clab 2218 df-cleq 2224 df-clel 2227 df-nfc 2363 df-ral 2515 df-rex 2516 df-reu 2517 df-rab 2519 df-v 2804 df-sbc 3032 df-csb 3128 df-un 3204 df-in 3206 df-ss 3213 df-pw 3654 df-sn 3675 df-pr 3676 df-op 3678 df-uni 3894 df-iun 3972 df-br 4089 df-opab 4151 df-mpt 4152 df-id 4390 df-xp 4731 df-rel 4732 df-cnv 4733 df-co 4734 df-dm 4735 df-rn 4736 df-res 4737 df-ima 4738 df-iota 5286 df-fun 5328 df-fn 5329 df-f 5330 df-f1 5331 df-fo 5332 df-f1o 5333 df-fv 5334 df-oprab 6022 df-mpo 6023 df-of 6235 |
| This theorem is referenced by: psrval 14682 fnpsr 14683 psrbasg 14690 psrplusgg 14694 |
| Copyright terms: Public domain | W3C validator |