Mathbox for Richard Penner < Previous   Next > Nearby theorems Mirrors  >  Home  >  MPE Home  >  Th. List  >   Mathboxes  >  ntrclsfv1 Structured version   Visualization version   GIF version

Theorem ntrclsfv1 40390
 Description: If (pseudo-)interior and (pseudo-)closure functions are related by the duality operator then there is a functional relation between them (Contributed by RP, 28-May-2021.)
Hypotheses
Ref Expression
ntrcls.o 𝑂 = (𝑖 ∈ V ↦ (𝑘 ∈ (𝒫 𝑖m 𝒫 𝑖) ↦ (𝑗 ∈ 𝒫 𝑖 ↦ (𝑖 ∖ (𝑘‘(𝑖𝑗))))))
ntrcls.d 𝐷 = (𝑂𝐵)
ntrcls.r (𝜑𝐼𝐷𝐾)
Assertion
Ref Expression
ntrclsfv1 (𝜑 → (𝐷𝐼) = 𝐾)
Distinct variable groups:   𝐵,𝑖,𝑗,𝑘   𝜑,𝑖,𝑗,𝑘
Allowed substitution hints:   𝐷(𝑖,𝑗,𝑘)   𝐼(𝑖,𝑗,𝑘)   𝐾(𝑖,𝑗,𝑘)   𝑂(𝑖,𝑗,𝑘)

Proof of Theorem ntrclsfv1
StepHypRef Expression
1 ntrcls.r . 2 (𝜑𝐼𝐷𝐾)
2 ntrcls.o . . . . . . 7 𝑂 = (𝑖 ∈ V ↦ (𝑘 ∈ (𝒫 𝑖m 𝒫 𝑖) ↦ (𝑗 ∈ 𝒫 𝑖 ↦ (𝑖 ∖ (𝑘‘(𝑖𝑗))))))
3 ntrcls.d . . . . . . 7 𝐷 = (𝑂𝐵)
42, 3, 1ntrclsf1o 40386 . . . . . 6 (𝜑𝐷:(𝒫 𝐵m 𝒫 𝐵)–1-1-onto→(𝒫 𝐵m 𝒫 𝐵))
5 f1ofn 6609 . . . . . 6 (𝐷:(𝒫 𝐵m 𝒫 𝐵)–1-1-onto→(𝒫 𝐵m 𝒫 𝐵) → 𝐷 Fn (𝒫 𝐵m 𝒫 𝐵))
64, 5syl 17 . . . . 5 (𝜑𝐷 Fn (𝒫 𝐵m 𝒫 𝐵))
72, 3, 1ntrclsiex 40388 . . . . 5 (𝜑𝐼 ∈ (𝒫 𝐵m 𝒫 𝐵))
86, 7jca 514 . . . 4 (𝜑 → (𝐷 Fn (𝒫 𝐵m 𝒫 𝐵) ∧ 𝐼 ∈ (𝒫 𝐵m 𝒫 𝐵)))
9 fnfun 6446 . . . . . 6 (𝐷 Fn (𝒫 𝐵m 𝒫 𝐵) → Fun 𝐷)
109adantr 483 . . . . 5 ((𝐷 Fn (𝒫 𝐵m 𝒫 𝐵) ∧ 𝐼 ∈ (𝒫 𝐵m 𝒫 𝐵)) → Fun 𝐷)
11 fndm 6448 . . . . . . 7 (𝐷 Fn (𝒫 𝐵m 𝒫 𝐵) → dom 𝐷 = (𝒫 𝐵m 𝒫 𝐵))
1211eleq2d 2896 . . . . . 6 (𝐷 Fn (𝒫 𝐵m 𝒫 𝐵) → (𝐼 ∈ dom 𝐷𝐼 ∈ (𝒫 𝐵m 𝒫 𝐵)))
1312biimpar 480 . . . . 5 ((𝐷 Fn (𝒫 𝐵m 𝒫 𝐵) ∧ 𝐼 ∈ (𝒫 𝐵m 𝒫 𝐵)) → 𝐼 ∈ dom 𝐷)
1410, 13jca 514 . . . 4 ((𝐷 Fn (𝒫 𝐵m 𝒫 𝐵) ∧ 𝐼 ∈ (𝒫 𝐵m 𝒫 𝐵)) → (Fun 𝐷𝐼 ∈ dom 𝐷))
158, 14syl 17 . . 3 (𝜑 → (Fun 𝐷𝐼 ∈ dom 𝐷))
16 funbrfvb 6713 . . 3 ((Fun 𝐷𝐼 ∈ dom 𝐷) → ((𝐷𝐼) = 𝐾𝐼𝐷𝐾))
1715, 16syl 17 . 2 (𝜑 → ((𝐷𝐼) = 𝐾𝐼𝐷𝐾))
181, 17mpbird 259 1 (𝜑 → (𝐷𝐼) = 𝐾)
 Colors of variables: wff setvar class Syntax hints:   → wi 4   ↔ wb 208   ∧ wa 398   = wceq 1530   ∈ wcel 2107  Vcvv 3493   ∖ cdif 3931  𝒫 cpw 4537   class class class wbr 5057   ↦ cmpt 5137  dom cdm 5548  Fun wfun 6342   Fn wfn 6343  –1-1-onto→wf1o 6347  ‘cfv 6348  (class class class)co 7148   ↑m cmap 8398 This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1789  ax-4 1803  ax-5 1904  ax-6 1963  ax-7 2008  ax-8 2109  ax-9 2117  ax-10 2138  ax-11 2153  ax-12 2169  ax-ext 2791  ax-rep 5181  ax-sep 5194  ax-nul 5201  ax-pow 5257  ax-pr 5320  ax-un 7453 This theorem depends on definitions:  df-bi 209  df-an 399  df-or 844  df-3an 1083  df-tru 1533  df-ex 1774  df-nf 1778  df-sb 2063  df-mo 2616  df-eu 2648  df-clab 2798  df-cleq 2812  df-clel 2891  df-nfc 2961  df-ne 3015  df-ral 3141  df-rex 3142  df-reu 3143  df-rab 3145  df-v 3495  df-sbc 3771  df-csb 3882  df-dif 3937  df-un 3939  df-in 3941  df-ss 3950  df-nul 4290  df-if 4466  df-pw 4539  df-sn 4560  df-pr 4562  df-op 4566  df-uni 4831  df-iun 4912  df-br 5058  df-opab 5120  df-mpt 5138  df-id 5453  df-xp 5554  df-rel 5555  df-cnv 5556  df-co 5557  df-dm 5558  df-rn 5559  df-res 5560  df-ima 5561  df-iota 6307  df-fun 6350  df-fn 6351  df-f 6352  df-f1 6353  df-fo 6354  df-f1o 6355  df-fv 6356  df-ov 7151  df-oprab 7152  df-mpo 7153  df-1st 7681  df-2nd 7682  df-map 8400 This theorem is referenced by:  ntrclsfv2  40391  ntrclscls00  40401  ntrclsiso  40402  ntrclsk2  40403  ntrclskb  40404  ntrclsk3  40405  ntrclsk13  40406
 Copyright terms: Public domain W3C validator