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Theorem ecopoprdm 3245
Description: Assuming the operation F is commutative, compute the domain the relation R specified by the first hypothesis.
Hypotheses
Ref Expression
ecopopr.1 |- R = {<.x, y>. | ((x e. (S X. S) /\ y e. (S X. S)) /\ E.zE.wE.vE.u((x = <.z, w>. /\ y = <.v, u>.) /\ (zFu) = (wFv)))}
ecopopr.com |- (xFy) = (yFx)
Assertion
Ref Expression
ecopoprdm |- dom R = (S X. S)
Distinct variable group(s):   x,y,z,w,v,u,F   x,S,y,z,w,v,u

Proof of Theorem ecopoprdm
StepHypRef Expression
1 ecopopr.1 . . . . 5 |- R = {<.x, y>. | ((x e. (S X. S) /\ y e. (S X. S)) /\ E.zE.wE.vE.u((x = <.z, w>. /\ y = <.v, u>.) /\ (zFu) = (wFv)))}
2 opabssxp 2468 . . . . 5 |- {<.x, y>. | ((x e. (S X. S) /\ y e. (S X. S)) /\ E.zE.wE.vE.u((x = <.z, w>. /\ y = <.v, u>.) /\ (zFu) = (wFv)))} (_ ((S X. S) X. (S X. S))
31, 2eqsstr 1530 . . . 4 |- R (_ ((S X. S) X. (S X. S))
4 dmss 2530 . . . 4 |- (R (_ ((S X. S) X. (S X. S)) -> dom R (_ dom ((S X. S) X. (S X. S)))
53, 4ax-mp 6 . . 3 |- dom R (_ dom ((S X. S) X. (S X. S))
6 dmxpid 2553 . . 3 |- dom ((S X. S) X. (S X. S)) = (S X. S)
75, 6sseqtr 1532 . 2 |- dom R (_ (S X. S)
8 relxp 2486 . . 3 |- Rel (S X. S)
9 visset 1350 . . . . 5 |- g e. V
109opelxp 2452 . . . 4 |- (<.f, g>. e. (S X. S) <-> (f e. S /\ g e. S))
11 visset 1350 . . . . . . . 8 |- f e. V
12 ecopopr.com . . . . . . . 8 |- (xFy) = (yFx)
1311, 9, 12caoprcom 3067 . . . . . . 7 |- (fFg) = (gFf)
141ecopopreq 3244 . . . . . . . 8 |- (((f e. S /\ g e. S) /\ (f e. S /\ g e. S)) -> (<.f, g>.R<.f, g>. <-> (fFg) = (gFf)))
1514anidms 332 . . . . . . 7 |- ((f e. S /\ g e. S) -> (<.f, g>.R<.f, g>. <-> (fFg) = (gFf)))
1613, 15mpbiri 169 . . . . . 6 |- ((f e. S /\ g e. S) -> <.f, g>.R<.f, g>.)
17 df-br 2063 . . . . . 6 |- (<.f, g>.R<.f, g>. <-> <.<.f, g>., <.f, g>.>. e. R)
1816, 17sylib 173 . . . . 5 |- ((f e. S /\ g e. S) -> <.<.f, g>., <.f, g>.>. e. R)
19 opex 1893 . . . . . 6 |- <.f, g>. e. V
2019opeldm 2534 . . . . 5 |- (<.<.f, g>., <.f, g>.>. e. R -> <.f, g>. e. dom R)
2118, 20syl 12 . . . 4 |- ((f e. S /\ g e. S) -> <.f, g>. e. dom R)
2210, 21sylbi 174 . . 3 |- (<.f, g>. e. (S X. S) -> <.f, g>. e. dom R)
238, 22relssi 2481 . 2 |- (S X. S) (_ dom R
247, 23eqssi 1517 1 |- dom R = (S X. S)
Colors of variables: wff set class
Syntax hints:   <-> wb 127   /\ wa 196  E.wex 678   = wceq 1091   e. wcel 1092   (_ wss 1487  <.cop 1810   class class class wbr 2054  {copab 2055   X. cxp 2408  dom cdm 2410  (class class class)co 3001
This theorem is referenced by:  dmenq 3839  dmenr 3969
This theorem was proved from axioms:  ax-1 3  ax-2 4  ax-3 5  ax-mp 6  ax-4 673  ax-5 674  ax-6 675  ax-7 676  ax-gen 677  ax-8 798  ax-9 799  ax-10 800  ax-11 801  ax-12 802  ax-13 804  ax-14 805  ax-16 922  ax-17 925  ax-ext 1074  ax-rep 1075  ax-pow 1077
This theorem depends on definitions:  df-bi 128  df-or 197  df-an 198  df-ex 679  df-sb 853  df-clab 1093  df-cleq 1097  df-clel 1099  df-ral 1205  df-v 1349  df-dif 1489  df-un 1490  df-in 1491  df-ss 1492  df-nul 1708  df-pw 1799  df-sn 1811  df-pr 1812  df-op 1815  df-uni 1920  df-br 2063  df-opab 2098  df-xp 2424  df-rel 2425  df-cnv 2426  df-dm 2428  df-rn 2429  df-res 2430  df-ima 2431  df-fv 2438  df-opr 3003
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