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Mirrors > Home > ILE Home > Th. List > restfn | GIF version |
Description: The subspace topology operator is a function on pairs. (Contributed by Mario Carneiro, 1-May-2015.) |
Ref | Expression |
---|---|
restfn | ⊢ ↾t Fn (V × V) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | df-rest 12855 | . 2 ⊢ ↾t = (𝑗 ∈ V, 𝑥 ∈ V ↦ ran (𝑦 ∈ 𝑗 ↦ (𝑦 ∩ 𝑥))) | |
2 | vex 2763 | . . . 4 ⊢ 𝑗 ∈ V | |
3 | 2 | mptex 5785 | . . 3 ⊢ (𝑦 ∈ 𝑗 ↦ (𝑦 ∩ 𝑥)) ∈ V |
4 | 3 | rnex 4930 | . 2 ⊢ ran (𝑦 ∈ 𝑗 ↦ (𝑦 ∩ 𝑥)) ∈ V |
5 | 1, 4 | fnmpoi 6258 | 1 ⊢ ↾t Fn (V × V) |
Colors of variables: wff set class |
Syntax hints: Vcvv 2760 ∩ cin 3153 ↦ cmpt 4091 × cxp 4658 ran crn 4661 Fn wfn 5250 ↾t crest 12853 |
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 710 ax-5 1458 ax-7 1459 ax-gen 1460 ax-ie1 1504 ax-ie2 1505 ax-8 1515 ax-10 1516 ax-11 1517 ax-i12 1518 ax-bndl 1520 ax-4 1521 ax-17 1537 ax-i9 1541 ax-ial 1545 ax-i5r 1546 ax-13 2166 ax-14 2167 ax-ext 2175 ax-coll 4145 ax-sep 4148 ax-pow 4204 ax-pr 4239 ax-un 4465 |
This theorem depends on definitions: df-bi 117 df-3an 982 df-tru 1367 df-nf 1472 df-sb 1774 df-eu 2045 df-mo 2046 df-clab 2180 df-cleq 2186 df-clel 2189 df-nfc 2325 df-ral 2477 df-rex 2478 df-reu 2479 df-rab 2481 df-v 2762 df-sbc 2987 df-csb 3082 df-un 3158 df-in 3160 df-ss 3167 df-pw 3604 df-sn 3625 df-pr 3626 df-op 3628 df-uni 3837 df-iun 3915 df-br 4031 df-opab 4092 df-mpt 4093 df-id 4325 df-xp 4666 df-rel 4667 df-cnv 4668 df-co 4669 df-dm 4670 df-rn 4671 df-res 4672 df-ima 4673 df-iota 5216 df-fun 5257 df-fn 5258 df-f 5259 df-f1 5260 df-fo 5261 df-f1o 5262 df-fv 5263 df-oprab 5923 df-mpo 5924 df-1st 6195 df-2nd 6196 df-rest 12855 |
This theorem is referenced by: topnfn 12858 topnvalg 12865 restbasg 14347 tgrest 14348 restco 14353 txrest 14455 |
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