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| Mirrors > Home > ILE Home > Th. List > fnmap | GIF version | ||
| Description: Set exponentiation has a universal domain. (Contributed by NM, 8-Dec-2003.) (Revised by Mario Carneiro, 8-Sep-2013.) |
| Ref | Expression |
|---|---|
| fnmap | ⊢ ↑𝑚 Fn (V × V) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | df-map 6924 | . 2 ⊢ ↑𝑚 = (𝑥 ∈ V, 𝑦 ∈ V ↦ {𝑓 ∣ 𝑓:𝑦⟶𝑥}) | |
| 2 | vex 2824 | . . 3 ⊢ 𝑦 ∈ V | |
| 3 | vex 2824 | . . 3 ⊢ 𝑥 ∈ V | |
| 4 | mapex 6928 | . . 3 ⊢ ((𝑦 ∈ V ∧ 𝑥 ∈ V) → {𝑓 ∣ 𝑓:𝑦⟶𝑥} ∈ V) | |
| 5 | 2, 3, 4 | mp2an 430 | . 2 ⊢ {𝑓 ∣ 𝑓:𝑦⟶𝑥} ∈ V |
| 6 | 1, 5 | fnmpoi 6439 | 1 ⊢ ↑𝑚 Fn (V × V) |
| Colors of variables: wff set class |
| This proof depends on syntax axioms: ∈ wcel 2209 {cab 2224 Vcvv 2821 × cxp 4772 Fn wfn 5372 ⟶wf 5373 ↑𝑚 cmap 6922 |
| 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 ax-un 4578 |
| 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-rab 2537 df-v 2823 df-sbc 3052 df-csb 3148 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-iun 4014 df-br 4131 df-opab 4193 df-mpt 4194 df-id 4438 df-xp 4780 df-rel 4781 df-cnv 4782 df-co 4783 df-dm 4784 df-rn 4785 df-res 4786 df-ima 4787 df-iota 5337 df-fun 5379 df-fn 5380 df-f 5381 df-fv 5385 df-oprab 6089 df-mpo 6090 df-1st 6374 df-2nd 6375 df-map 6924 |
| This theorem is used by: mapsnend 7099 mapsnen 7100 map1 7101 mapen 7146 mapdom1g 7147 mapxpen 7148 xpmapenlem 7149 mapunen 7151 2omapen 7319 hashfacen 11286 wrdexg 11317 omctfn 13336 prdsvallem 13623 ismhm 13770 mhmex 13771 prdsval 14175 rhmex 14466 fnpsr 15053 psrelbas 15068 psrplusgg 15071 psraddcl 15073 psr0cl 15074 psr0lid 15075 psrnegcl 15076 psrlinv 15077 psrgrp 15078 psr1clfi 15081 mplsubgfilemcl 15092 cnfval 15297 cnpfval 15298 cnpval 15301 ismet 15447 isxmet 15448 xmetunirn 15461 plyval 15835 pw1mapen 17038 |
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