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| Mirrors > Home > MPE Home > Th. List > restfn | Structured version Visualization version 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 17344 | . 2 ⊢ ↾t = (𝑗 ∈ V, 𝑥 ∈ V ↦ ran (𝑦 ∈ 𝑗 ↦ (𝑦 ∩ 𝑥))) | |
| 2 | vex 3442 | . . . 4 ⊢ 𝑗 ∈ V | |
| 3 | 2 | mptex 7163 | . . 3 ⊢ (𝑦 ∈ 𝑗 ↦ (𝑦 ∩ 𝑥)) ∈ V |
| 4 | 3 | rnex 7850 | . 2 ⊢ ran (𝑦 ∈ 𝑗 ↦ (𝑦 ∩ 𝑥)) ∈ V |
| 5 | 1, 4 | fnmpoi 8012 | 1 ⊢ ↾t Fn (V × V) |
| Colors of variables: wff setvar class |
| Syntax hints: Vcvv 3438 ∩ cin 3904 ↦ cmpt 5176 × cxp 5621 ran crn 5624 Fn wfn 6481 ↾t crest 17342 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1795 ax-4 1809 ax-5 1910 ax-6 1967 ax-7 2008 ax-8 2111 ax-9 2119 ax-10 2142 ax-11 2158 ax-12 2178 ax-ext 2701 ax-rep 5221 ax-sep 5238 ax-nul 5248 ax-pr 5374 ax-un 7675 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 848 df-3an 1088 df-tru 1543 df-fal 1553 df-ex 1780 df-nf 1784 df-sb 2066 df-mo 2533 df-eu 2562 df-clab 2708 df-cleq 2721 df-clel 2803 df-nfc 2878 df-ne 2926 df-ral 3045 df-rex 3054 df-reu 3346 df-rab 3397 df-v 3440 df-sbc 3745 df-csb 3854 df-dif 3908 df-un 3910 df-in 3912 df-ss 3922 df-nul 4287 df-if 4479 df-sn 4580 df-pr 4582 df-op 4586 df-uni 4862 df-iun 4946 df-br 5096 df-opab 5158 df-mpt 5177 df-id 5518 df-xp 5629 df-rel 5630 df-cnv 5631 df-co 5632 df-dm 5633 df-rn 5634 df-res 5635 df-ima 5636 df-iota 6442 df-fun 6488 df-fn 6489 df-f 6490 df-f1 6491 df-fo 6492 df-f1o 6493 df-fv 6494 df-oprab 7357 df-mpo 7358 df-1st 7931 df-2nd 7932 df-rest 17344 |
| This theorem is referenced by: 0rest 17351 restsspw 17353 firest 17354 restrcl 23060 restbas 23061 ssrest 23079 resstopn 23089 |
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