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| Mirrors > Home > ILE Home > Th. List > fnovex | GIF version | ||
| Description: The result of an operation is a set. (Contributed by Jim Kingdon, 15-Jan-2019.) |
| Ref | Expression |
|---|---|
| fnovex | ⊢ ((𝐹 Fn (𝐶 × 𝐷) ∧ 𝐴 ∈ 𝐶 ∧ 𝐵 ∈ 𝐷) → (𝐴𝐹𝐵) ∈ V) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | df-ov 6088 | . 2 ⊢ (𝐴𝐹𝐵) = (𝐹‘〈𝐴, 𝐵〉) | |
| 2 | opelxp 4804 | . . . 4 ⊢ (〈𝐴, 𝐵〉 ∈ (𝐶 × 𝐷) ↔ (𝐴 ∈ 𝐶 ∧ 𝐵 ∈ 𝐷)) | |
| 3 | funfvex 5712 | . . . . 5 ⊢ ((Fun 𝐹 ∧ 〈𝐴, 𝐵〉 ∈ dom 𝐹) → (𝐹‘〈𝐴, 𝐵〉) ∈ V) | |
| 4 | 3 | funfni 5483 | . . . 4 ⊢ ((𝐹 Fn (𝐶 × 𝐷) ∧ 〈𝐴, 𝐵〉 ∈ (𝐶 × 𝐷)) → (𝐹‘〈𝐴, 𝐵〉) ∈ V) |
| 5 | 2, 4 | sylan2br 288 | . . 3 ⊢ ((𝐹 Fn (𝐶 × 𝐷) ∧ (𝐴 ∈ 𝐶 ∧ 𝐵 ∈ 𝐷)) → (𝐹‘〈𝐴, 𝐵〉) ∈ V) |
| 6 | 5 | 3impb 1230 | . 2 ⊢ ((𝐹 Fn (𝐶 × 𝐷) ∧ 𝐴 ∈ 𝐶 ∧ 𝐵 ∈ 𝐷) → (𝐹‘〈𝐴, 𝐵〉) ∈ V) |
| 7 | 1, 6 | eqeltrid 2325 | 1 ⊢ ((𝐹 Fn (𝐶 × 𝐷) ∧ 𝐴 ∈ 𝐶 ∧ 𝐵 ∈ 𝐷) → (𝐴𝐹𝐵) ∈ V) |
| Colors of variables: wff set class |
| This proof depends on syntax axioms: → wi 4 ∧ wa 104 ∧ w3a 1009 ∈ wcel 2209 Vcvv 2821 〈cop 3712 × cxp 4772 Fn wfn 5372 ‘cfv 5377 (class class class)co 6085 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 106 ax-ia2 107 ax-ia3 108 ax-io 721 ax-5 1500 ax-7 1501 ax-gen 1502 ax-ie1 1546 ax-ie2 1547 ax-8 1557 ax-10 1558 ax-11 1559 ax-i12 1560 ax-bndl 1562 ax-4 1563 ax-17 1579 ax-i9 1583 ax-ial 1587 ax-i5r 1588 ax-14 2212 ax-ext 2220 ax-sep 4249 ax-pow 4311 ax-pr 4346 |
| This proof depends on definitions: df-bi 117 df-3an 1011 df-tru 1405 df-nf 1514 df-sb 1816 df-eu 2089 df-mo 2090 df-clab 2225 df-cleq 2231 df-clel 2234 df-nfc 2381 df-ral 2533 df-rex 2534 df-v 2823 df-sbc 3052 df-un 3224 df-in 3226 df-ss 3233 df-pw 3690 df-sn 3715 df-pr 3716 df-op 3718 df-uni 3936 df-br 4131 df-opab 4193 df-id 4438 df-xp 4780 df-cnv 4782 df-co 4783 df-dm 4784 df-iota 5337 df-fun 5379 df-fn 5380 df-fv 5385 df-ov 6088 |
| This theorem is used by: ovelrn 6238 mapsnend 7099 mapsnen 7100 map1 7101 mapen 7146 mapdom1g 7147 mapxpen 7148 xpmapenlem 7149 mapunen 7151 2omapen 7319 fzen 10447 hashfacen 11284 wrdexg 11315 omctfn 13334 topnfn 13598 topnvalg 13605 prdsvallem 13621 ismhm 13768 mhmex 13769 gsumvalfi 14152 prdsval 14173 rhmex 14464 fnpsr 15051 psrelbas 15066 psrplusgg 15069 psraddcl 15071 psr0cl 15072 psr0lid 15073 psrnegcl 15074 psrlinv 15075 psrgrp 15076 psr1clfi 15079 mplvalcoe 15081 mplbascoe 15082 fnmpl 15084 mplsubgfilemcl 15090 mplplusgg 15094 restbasg 15269 tgrest 15270 restco 15275 lmfval 15294 cnfval 15295 cnpfval 15296 cnpval 15299 txrest 15377 ismet 15445 isxmet 15446 xmetunirn 15459 plyval 15833 pw1mapen 17026 |
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