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| Mirrors > Home > MPE Home > Th. List > Mathboxes > ntrelmap | Structured version Visualization version GIF version | ||
| Description: The interior function is a map from the powerset of the base set to itself. (Contributed by RP, 22-Apr-2021.) |
| Ref | Expression |
|---|---|
| ntrrn.x | ⊢ 𝑋 = ∪ 𝐽 |
| ntrrn.i | ⊢ 𝐼 = (int‘𝐽) |
| Ref | Expression |
|---|---|
| ntrelmap | ⊢ (𝐽 ∈ Top → 𝐼 ∈ (𝒫 𝑋 ↑m 𝒫 𝑋)) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | ntrrn.x | . . 3 ⊢ 𝑋 = ∪ 𝐽 | |
| 2 | ntrrn.i | . . 3 ⊢ 𝐼 = (int‘𝐽) | |
| 3 | 1, 2 | ntrf2 44361 | . 2 ⊢ (𝐽 ∈ Top → 𝐼:𝒫 𝑋⟶𝒫 𝑋) |
| 4 | 1 | topopn 22850 | . . . 4 ⊢ (𝐽 ∈ Top → 𝑋 ∈ 𝐽) |
| 5 | 4 | pwexd 5324 | . . 3 ⊢ (𝐽 ∈ Top → 𝒫 𝑋 ∈ V) |
| 6 | 5, 5 | elmapd 8777 | . 2 ⊢ (𝐽 ∈ Top → (𝐼 ∈ (𝒫 𝑋 ↑m 𝒫 𝑋) ↔ 𝐼:𝒫 𝑋⟶𝒫 𝑋)) |
| 7 | 3, 6 | mpbird 257 | 1 ⊢ (𝐽 ∈ Top → 𝐼 ∈ (𝒫 𝑋 ↑m 𝒫 𝑋)) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 = wceq 1541 ∈ wcel 2113 Vcvv 3440 𝒫 cpw 4554 ∪ cuni 4863 ⟶wf 6488 ‘cfv 6492 (class class class)co 7358 ↑m cmap 8763 Topctop 22837 intcnt 22961 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1796 ax-4 1810 ax-5 1911 ax-6 1968 ax-7 2009 ax-8 2115 ax-9 2123 ax-10 2146 ax-11 2162 ax-12 2184 ax-ext 2708 ax-rep 5224 ax-sep 5241 ax-nul 5251 ax-pow 5310 ax-pr 5377 ax-un 7680 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 848 df-3an 1088 df-tru 1544 df-fal 1554 df-ex 1781 df-nf 1785 df-sb 2068 df-mo 2539 df-eu 2569 df-clab 2715 df-cleq 2728 df-clel 2811 df-nfc 2885 df-ne 2933 df-ral 3052 df-rex 3061 df-reu 3351 df-rab 3400 df-v 3442 df-sbc 3741 df-csb 3850 df-dif 3904 df-un 3906 df-in 3908 df-ss 3918 df-nul 4286 df-if 4480 df-pw 4556 df-sn 4581 df-pr 4583 df-op 4587 df-uni 4864 df-iun 4948 df-br 5099 df-opab 5161 df-mpt 5180 df-id 5519 df-xp 5630 df-rel 5631 df-cnv 5632 df-co 5633 df-dm 5634 df-rn 5635 df-res 5636 df-ima 5637 df-iota 6448 df-fun 6494 df-fn 6495 df-f 6496 df-f1 6497 df-fo 6498 df-f1o 6499 df-fv 6500 df-ov 7361 df-oprab 7362 df-mpo 7363 df-map 8765 df-top 22838 df-topon 22855 df-ntr 22964 |
| This theorem is referenced by: (None) |
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