MPE Home Metamath Proof Explorer < Previous   Next >
Nearby theorems
Mirrors  >  Home  >  MPE Home  >  Th. List  >  suppimacnv Structured version   Visualization version   GIF version

Theorem suppimacnv 8153
Description: Support sets of functions expressed by inverse images. (Contributed by AV, 31-Mar-2019.) (Revised by AV, 7-Apr-2019.)
Assertion
Ref Expression
suppimacnv ((𝑅𝑉𝑍𝑊) → (𝑅 supp 𝑍) = (𝑅 “ (V ∖ {𝑍})))

Proof of Theorem suppimacnv
Dummy variables 𝑥 𝑦 𝑠 𝑡 are mutually distinct and distinct from all other variables.
StepHypRef Expression
1 breq2 5111 . . . . . . . 8 (𝑡 = 𝑠 → (𝑥𝑅𝑡𝑥𝑅𝑠))
21cbvexvw 2037 . . . . . . 7 (∃𝑡 𝑥𝑅𝑡 ↔ ∃𝑠 𝑥𝑅𝑠)
3 breq2 5111 . . . . . . . . . . . . . 14 (𝑠 = 𝑍 → (𝑥𝑅𝑠𝑥𝑅𝑍))
43anbi1d 631 . . . . . . . . . . . . 13 (𝑠 = 𝑍 → ((𝑥𝑅𝑠 ∧ (𝑥𝑅𝑡𝑡𝑍)) ↔ (𝑥𝑅𝑍 ∧ (𝑥𝑅𝑡𝑡𝑍))))
5 bianir 1058 . . . . . . . . . . . . . . . . . 18 ((𝑡𝑍 ∧ (𝑥𝑅𝑡𝑡𝑍)) → 𝑥𝑅𝑡)
6 vex 3451 . . . . . . . . . . . . . . . . . . . 20 𝑡 ∈ V
7 breq2 5111 . . . . . . . . . . . . . . . . . . . . 21 (𝑦 = 𝑡 → (𝑥𝑅𝑦𝑥𝑅𝑡))
8 neeq1 2987 . . . . . . . . . . . . . . . . . . . . 21 (𝑦 = 𝑡 → (𝑦𝑍𝑡𝑍))
97, 8anbi12d 632 . . . . . . . . . . . . . . . . . . . 20 (𝑦 = 𝑡 → ((𝑥𝑅𝑦𝑦𝑍) ↔ (𝑥𝑅𝑡𝑡𝑍)))
106, 9spcev 3572 . . . . . . . . . . . . . . . . . . 19 ((𝑥𝑅𝑡𝑡𝑍) → ∃𝑦(𝑥𝑅𝑦𝑦𝑍))
1110ex 412 . . . . . . . . . . . . . . . . . 18 (𝑥𝑅𝑡 → (𝑡𝑍 → ∃𝑦(𝑥𝑅𝑦𝑦𝑍)))
125, 11syl 17 . . . . . . . . . . . . . . . . 17 ((𝑡𝑍 ∧ (𝑥𝑅𝑡𝑡𝑍)) → (𝑡𝑍 → ∃𝑦(𝑥𝑅𝑦𝑦𝑍)))
1312ex 412 . . . . . . . . . . . . . . . 16 (𝑡𝑍 → ((𝑥𝑅𝑡𝑡𝑍) → (𝑡𝑍 → ∃𝑦(𝑥𝑅𝑦𝑦𝑍))))
1413pm2.43a 54 . . . . . . . . . . . . . . 15 (𝑡𝑍 → ((𝑥𝑅𝑡𝑡𝑍) → ∃𝑦(𝑥𝑅𝑦𝑦𝑍)))
1514adantld 490 . . . . . . . . . . . . . 14 (𝑡𝑍 → ((𝑥𝑅𝑍 ∧ (𝑥𝑅𝑡𝑡𝑍)) → ∃𝑦(𝑥𝑅𝑦𝑦𝑍)))
16 nne 2929 . . . . . . . . . . . . . . . 16 𝑡𝑍𝑡 = 𝑍)
17 notbi 319 . . . . . . . . . . . . . . . . . . . 20 ((𝑥𝑅𝑡𝑡𝑍) ↔ (¬ 𝑥𝑅𝑡 ↔ ¬ 𝑡𝑍))
18 bianir 1058 . . . . . . . . . . . . . . . . . . . . . 22 ((¬ 𝑡𝑍 ∧ (¬ 𝑥𝑅𝑡 ↔ ¬ 𝑡𝑍)) → ¬ 𝑥𝑅𝑡)
19 breq2 5111 . . . . . . . . . . . . . . . . . . . . . . . . 25 (𝑍 = 𝑡 → (𝑥𝑅𝑍𝑥𝑅𝑡))
2019eqcoms 2737 . . . . . . . . . . . . . . . . . . . . . . . 24 (𝑡 = 𝑍 → (𝑥𝑅𝑍𝑥𝑅𝑡))
21 pm2.24 124 . . . . . . . . . . . . . . . . . . . . . . . 24 (𝑥𝑅𝑡 → (¬ 𝑥𝑅𝑡 → ∃𝑦(𝑥𝑅𝑦𝑦𝑍)))
2220, 21biimtrdi 253 . . . . . . . . . . . . . . . . . . . . . . 23 (𝑡 = 𝑍 → (𝑥𝑅𝑍 → (¬ 𝑥𝑅𝑡 → ∃𝑦(𝑥𝑅𝑦𝑦𝑍))))
2322com13 88 . . . . . . . . . . . . . . . . . . . . . 22 𝑥𝑅𝑡 → (𝑥𝑅𝑍 → (𝑡 = 𝑍 → ∃𝑦(𝑥𝑅𝑦𝑦𝑍))))
2418, 23syl 17 . . . . . . . . . . . . . . . . . . . . 21 ((¬ 𝑡𝑍 ∧ (¬ 𝑥𝑅𝑡 ↔ ¬ 𝑡𝑍)) → (𝑥𝑅𝑍 → (𝑡 = 𝑍 → ∃𝑦(𝑥𝑅𝑦𝑦𝑍))))
2524ex 412 . . . . . . . . . . . . . . . . . . . 20 𝑡𝑍 → ((¬ 𝑥𝑅𝑡 ↔ ¬ 𝑡𝑍) → (𝑥𝑅𝑍 → (𝑡 = 𝑍 → ∃𝑦(𝑥𝑅𝑦𝑦𝑍)))))
2617, 25biimtrid 242 . . . . . . . . . . . . . . . . . . 19 𝑡𝑍 → ((𝑥𝑅𝑡𝑡𝑍) → (𝑥𝑅𝑍 → (𝑡 = 𝑍 → ∃𝑦(𝑥𝑅𝑦𝑦𝑍)))))
2726com13 88 . . . . . . . . . . . . . . . . . 18 (𝑥𝑅𝑍 → ((𝑥𝑅𝑡𝑡𝑍) → (¬ 𝑡𝑍 → (𝑡 = 𝑍 → ∃𝑦(𝑥𝑅𝑦𝑦𝑍)))))
2827imp 406 . . . . . . . . . . . . . . . . 17 ((𝑥𝑅𝑍 ∧ (𝑥𝑅𝑡𝑡𝑍)) → (¬ 𝑡𝑍 → (𝑡 = 𝑍 → ∃𝑦(𝑥𝑅𝑦𝑦𝑍))))
2928com13 88 . . . . . . . . . . . . . . . 16 (𝑡 = 𝑍 → (¬ 𝑡𝑍 → ((𝑥𝑅𝑍 ∧ (𝑥𝑅𝑡𝑡𝑍)) → ∃𝑦(𝑥𝑅𝑦𝑦𝑍))))
3016, 29sylbi 217 . . . . . . . . . . . . . . 15 𝑡𝑍 → (¬ 𝑡𝑍 → ((𝑥𝑅𝑍 ∧ (𝑥𝑅𝑡𝑡𝑍)) → ∃𝑦(𝑥𝑅𝑦𝑦𝑍))))
3130pm2.43i 52 . . . . . . . . . . . . . 14 𝑡𝑍 → ((𝑥𝑅𝑍 ∧ (𝑥𝑅𝑡𝑡𝑍)) → ∃𝑦(𝑥𝑅𝑦𝑦𝑍)))
3215, 31pm2.61i 182 . . . . . . . . . . . . 13 ((𝑥𝑅𝑍 ∧ (𝑥𝑅𝑡𝑡𝑍)) → ∃𝑦(𝑥𝑅𝑦𝑦𝑍))
334, 32biimtrdi 253 . . . . . . . . . . . 12 (𝑠 = 𝑍 → ((𝑥𝑅𝑠 ∧ (𝑥𝑅𝑡𝑡𝑍)) → ∃𝑦(𝑥𝑅𝑦𝑦𝑍)))
34 vex 3451 . . . . . . . . . . . . . . . 16 𝑠 ∈ V
35 breq2 5111 . . . . . . . . . . . . . . . . 17 (𝑦 = 𝑠 → (𝑥𝑅𝑦𝑥𝑅𝑠))
36 neeq1 2987 . . . . . . . . . . . . . . . . 17 (𝑦 = 𝑠 → (𝑦𝑍𝑠𝑍))
3735, 36anbi12d 632 . . . . . . . . . . . . . . . 16 (𝑦 = 𝑠 → ((𝑥𝑅𝑦𝑦𝑍) ↔ (𝑥𝑅𝑠𝑠𝑍)))
3834, 37spcev 3572 . . . . . . . . . . . . . . 15 ((𝑥𝑅𝑠𝑠𝑍) → ∃𝑦(𝑥𝑅𝑦𝑦𝑍))
3938ex 412 . . . . . . . . . . . . . 14 (𝑥𝑅𝑠 → (𝑠𝑍 → ∃𝑦(𝑥𝑅𝑦𝑦𝑍)))
4039adantr 480 . . . . . . . . . . . . 13 ((𝑥𝑅𝑠 ∧ (𝑥𝑅𝑡𝑡𝑍)) → (𝑠𝑍 → ∃𝑦(𝑥𝑅𝑦𝑦𝑍)))
4140com12 32 . . . . . . . . . . . 12 (𝑠𝑍 → ((𝑥𝑅𝑠 ∧ (𝑥𝑅𝑡𝑡𝑍)) → ∃𝑦(𝑥𝑅𝑦𝑦𝑍)))
4233, 41pm2.61ine 3008 . . . . . . . . . . 11 ((𝑥𝑅𝑠 ∧ (𝑥𝑅𝑡𝑡𝑍)) → ∃𝑦(𝑥𝑅𝑦𝑦𝑍))
4342expcom 413 . . . . . . . . . 10 ((𝑥𝑅𝑡𝑡𝑍) → (𝑥𝑅𝑠 → ∃𝑦(𝑥𝑅𝑦𝑦𝑍)))
4443exlimiv 1930 . . . . . . . . 9 (∃𝑡(𝑥𝑅𝑡𝑡𝑍) → (𝑥𝑅𝑠 → ∃𝑦(𝑥𝑅𝑦𝑦𝑍)))
4544com12 32 . . . . . . . 8 (𝑥𝑅𝑠 → (∃𝑡(𝑥𝑅𝑡𝑡𝑍) → ∃𝑦(𝑥𝑅𝑦𝑦𝑍)))
4645exlimiv 1930 . . . . . . 7 (∃𝑠 𝑥𝑅𝑠 → (∃𝑡(𝑥𝑅𝑡𝑡𝑍) → ∃𝑦(𝑥𝑅𝑦𝑦𝑍)))
472, 46sylbi 217 . . . . . 6 (∃𝑡 𝑥𝑅𝑡 → (∃𝑡(𝑥𝑅𝑡𝑡𝑍) → ∃𝑦(𝑥𝑅𝑦𝑦𝑍)))
4847imp 406 . . . . 5 ((∃𝑡 𝑥𝑅𝑡 ∧ ∃𝑡(𝑥𝑅𝑡𝑡𝑍)) → ∃𝑦(𝑥𝑅𝑦𝑦𝑍))
4948a1i 11 . . . 4 ((𝑅𝑉𝑍𝑊) → ((∃𝑡 𝑥𝑅𝑡 ∧ ∃𝑡(𝑥𝑅𝑡𝑡𝑍)) → ∃𝑦(𝑥𝑅𝑦𝑦𝑍)))
5049ss2abdv 4029 . . 3 ((𝑅𝑉𝑍𝑊) → {𝑥 ∣ (∃𝑡 𝑥𝑅𝑡 ∧ ∃𝑡(𝑥𝑅𝑡𝑡𝑍))} ⊆ {𝑥 ∣ ∃𝑦(𝑥𝑅𝑦𝑦𝑍)})
51 suppvalbr 8143 . . 3 ((𝑅𝑉𝑍𝑊) → (𝑅 supp 𝑍) = {𝑥 ∣ (∃𝑡 𝑥𝑅𝑡 ∧ ∃𝑡(𝑥𝑅𝑡𝑡𝑍))})
52 cnvimadfsn 8151 . . . 4 (𝑅 “ (V ∖ {𝑍})) = {𝑥 ∣ ∃𝑦(𝑥𝑅𝑦𝑦𝑍)}
5352a1i 11 . . 3 ((𝑅𝑉𝑍𝑊) → (𝑅 “ (V ∖ {𝑍})) = {𝑥 ∣ ∃𝑦(𝑥𝑅𝑦𝑦𝑍)})
5450, 51, 533sstr4d 4002 . 2 ((𝑅𝑉𝑍𝑊) → (𝑅 supp 𝑍) ⊆ (𝑅 “ (V ∖ {𝑍})))
55 suppimacnvss 8152 . 2 ((𝑅𝑉𝑍𝑊) → (𝑅 “ (V ∖ {𝑍})) ⊆ (𝑅 supp 𝑍))
5654, 55eqssd 3964 1 ((𝑅𝑉𝑍𝑊) → (𝑅 supp 𝑍) = (𝑅 “ (V ∖ {𝑍})))
Colors of variables: wff setvar class
Syntax hints:  ¬ wn 3  wi 4  wb 206  wa 395   = wceq 1540  wex 1779  wcel 2109  {cab 2707  wne 2925  Vcvv 3447  cdif 3911  {csn 4589   class class class wbr 5107  ccnv 5637  cima 5641  (class class class)co 7387   supp csupp 8139
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-sep 5251  ax-nul 5261  ax-pr 5387  ax-un 7711
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-rab 3406  df-v 3449  df-sbc 3754  df-dif 3917  df-un 3919  df-in 3921  df-ss 3931  df-nul 4297  df-if 4489  df-pw 4565  df-sn 4590  df-pr 4592  df-op 4596  df-uni 4872  df-br 5108  df-opab 5170  df-id 5533  df-xp 5644  df-rel 5645  df-cnv 5646  df-co 5647  df-dm 5648  df-rn 5649  df-res 5650  df-ima 5651  df-iota 6464  df-fun 6513  df-fv 6519  df-ov 7390  df-oprab 7391  df-mpo 7392  df-supp 8140
This theorem is referenced by:  fsuppeq  8154  fsuppeqg  8155  suppun  8163  mptsuppdifd  8165  suppco  8185  fidmfisupp  9323  fdmfisuppfi  9325  fsuppun  9338  fsuppco  9353  gsumval3a  19833  gsumzf1o  19842  gsumzaddlem  19851  gsumzmhm  19867  gsumzoppg  19874  deg1val  26001  suppun2  32607  suppss3  32647  ffsrn  32652  fpwrelmapffslem  32655  sitgclg  34333  eulerpartlemmf  34366  eulerpartlemgf  34370
  Copyright terms: Public domain W3C validator