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Theorem iseuctopg 10483
Description: The predicate "J belongs to the euclidean topology."
Assertion
Ref Expression
iseuctopg |- (J e. A -> (J e. EucTop <-> (J (_ RR /\ A.y e. J E.a e. RR E.b e. RR (y e. (a(,)b) /\ (a(,)b) (_ J))))
Distinct variable group:   J,a,b,y

Proof of Theorem iseuctopg
StepHypRef Expression
1 sseq1 2080 . . 3 |- (x = J -> (x (_ RR <-> J (_ RR))
2 sseq2 2081 . . . . . 6 |- (x = J -> ((a(,)b) (_ x <-> (a(,)b) (_ J))
32anbi2d 615 . . . . 5 |- (x = J -> ((y e. (a(,)b) /\ (a(,)b) (_ x) <-> (y e. (a(,)b) /\ (a(,)b) (_ J)))
432rexbidv 1680 . . . 4 |- (x = J -> (E.a e. RR E.b e. RR (y e. (a(,)b) /\ (a(,)b) (_ x) <-> E.a e. RR E.b e. RR (y e. (a(,)b) /\ (a(,)b) (_ J)))
54raleqd 1790 . . 3 |- (x = J -> (A.y e. x E.a e. RR E.b e. RR (y e. (a(,)b) /\ (a(,)b) (_ x) <-> A.y e. J E.a e. RR E.b e. RR (y e. (a(,)b) /\ (a(,)b) (_ J)))
61, 5anbi12d 627 . 2 |- (x = J -> ((x (_ RR /\ A.y e. x E.a e. RR E.b e. RR (y e. (a(,)b) /\ (a(,)b) (_ x)) <-> (J (_ RR /\ A.y e. J E.a e. RR E.b e. RR (y e. (a(,)b) /\ (a(,)b) (_ J))))
7 df-EucTop 10482 . 2 |- EucTop = {x | (x (_ RR /\ A.y e. x E.a e. RR E.b e. RR (y e. (a(,)b) /\ (a(,)b) (_ x))}
86, 7elab2g 1898 1 |- (J e. A -> (J e. EucTop <-> (J (_ RR /\ A.y e. J E.a e. RR E.b e. RR (y e. (a(,)b) /\ (a(,)b) (_ J))))
Colors of variables: wff set class
Syntax hints:   -> wi 3   <-> wb 146   /\ wa 223   = wceq 955   e. wcel 957  A.wral 1644  E.wrex 1645   (_ wss 2045  (class class class)co 3960  RRcr 5220  (,)cioo 6312  EucTopceuctop 10481
This theorem is referenced by:  iseuctopgb 10484  osbr 10485  osbs 10486
This theorem was proved from axioms:  ax-1 4  ax-2 5  ax-3 6  ax-mp 7  ax-7 961  ax-gen 962  ax-8 963  ax-10 965  ax-12 967  ax-17 970  ax-4 972  ax-5o 974  ax-6o 977  ax-9o 1122  ax-10o 1139  ax-16 1210  ax-11o 1218  ax-ext 1459
This theorem depends on definitions:  df-bi 147  df-an 225  df-ex 980  df-sb 1172  df-clab 1464  df-cleq 1469  df-clel 1472  df-ral 1648  df-rex 1649  df-v 1810  df-in 2049  df-ss 2051  df-EucTop 10482
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