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Mirrors > Home > MPE Home > Th. List > Mathboxes > ntrclsbex | Structured version Visualization version GIF version |
Description: If (pseudo-)interior and (pseudo-)closure functions are related by the duality operator then the base set exists. (Contributed by RP, 21-May-2021.) |
Ref | Expression |
---|---|
ntrclsbex.d | ⊢ 𝐷 = (𝑂‘𝐵) |
ntrclsbex.r | ⊢ (𝜑 → 𝐼𝐷𝐾) |
Ref | Expression |
---|---|
ntrclsbex | ⊢ (𝜑 → 𝐵 ∈ V) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | ntrclsbex.r | . 2 ⊢ (𝜑 → 𝐼𝐷𝐾) | |
2 | ntrclsbex.d | . . 3 ⊢ 𝐷 = (𝑂‘𝐵) | |
3 | 2 | a1i 11 | . 2 ⊢ (𝜑 → 𝐷 = (𝑂‘𝐵)) |
4 | 1, 3 | brfvimex 41265 | 1 ⊢ (𝜑 → 𝐵 ∈ V) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 = wceq 1543 ∈ wcel 2110 Vcvv 3401 class class class wbr 5043 ‘cfv 6369 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1803 ax-4 1817 ax-5 1918 ax-6 1976 ax-7 2016 ax-8 2112 ax-9 2120 ax-10 2141 ax-11 2158 ax-12 2175 ax-ext 2706 ax-sep 5181 ax-nul 5188 ax-pr 5311 |
This theorem depends on definitions: df-bi 210 df-an 400 df-or 848 df-3an 1091 df-tru 1546 df-fal 1556 df-ex 1788 df-nf 1792 df-sb 2071 df-mo 2537 df-eu 2566 df-clab 2713 df-cleq 2726 df-clel 2812 df-ne 2936 df-ral 3059 df-rex 3060 df-rab 3063 df-v 3403 df-dif 3860 df-un 3862 df-in 3864 df-ss 3874 df-nul 4228 df-if 4430 df-sn 4532 df-pr 4534 df-op 4538 df-uni 4810 df-br 5044 df-iota 6327 df-fv 6377 |
This theorem is referenced by: ntrclsrcomplex 41274 ntrclsf1o 41290 ntrclsnvobr 41291 ntrclselnel1 41296 ntrclsfv 41298 ntrclscls00 41305 ntrclsiso 41306 ntrclsk2 41307 ntrclskb 41308 ntrclsk3 41309 ntrclsk13 41310 |
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