:: JGRAPH_5 semantic presentation
Lemma26:
for a, x being real number st a >= 0 & (x - a) * (x + a) >= 0 & not - a >= x holds
x >= a
by XREAL_1:97;
theorem Th1: :: JGRAPH_5:1
canceled;
theorem Th2: :: JGRAPH_5:2
theorem Th3: :: JGRAPH_5:3
theorem Th4: :: JGRAPH_5:4
theorem Th5: :: JGRAPH_5:5
theorem Th6: :: JGRAPH_5:6
theorem Th7: :: JGRAPH_5:7
theorem Th8: :: JGRAPH_5:8
theorem Th9: :: JGRAPH_5:9
theorem Th10: :: JGRAPH_5:10
theorem Th11: :: JGRAPH_5:11
for
a,
b,
d,
e,
s1,
s2,
t1,
t2 being
Real for
h being
Function of
(Closed-Interval-TSpace a,b),
(Closed-Interval-TSpace d,e) st
h is_homeomorphism &
h . s1 = t1 &
h . s2 = t2 &
h . a = d &
h . b = e &
d <= e &
t1 <= t2 &
s1 in [.a,b.] &
s2 in [.a,b.] holds
s1 <= s2
theorem Th12: :: JGRAPH_5:12
for
a,
b,
d,
e,
s1,
s2,
t1,
t2 being
Real for
h being
Function of
(Closed-Interval-TSpace a,b),
(Closed-Interval-TSpace d,e) st
h is_homeomorphism &
h . s1 = t1 &
h . s2 = t2 &
h . a = e &
h . b = d &
e >= d &
t1 >= t2 &
s1 in [.a,b.] &
s2 in [.a,b.] holds
s1 <= s2
theorem Th13: :: JGRAPH_5:13
theorem Th14: :: JGRAPH_5:14
Lemma114:
( 0 in [.0,1.] & 1 in [.0,1.] )
by RCOMP_1:15;
theorem Th15: :: JGRAPH_5:15
theorem Th16: :: JGRAPH_5:16
theorem Th17: :: JGRAPH_5:17
theorem Th18: :: JGRAPH_5:18
theorem Th19: :: JGRAPH_5:19
theorem Th20: :: JGRAPH_5:20
for
p1,
p2,
p3,
p4 being
Point of
(TOP-REAL 2) for
C0 being
Subset of
(TOP-REAL 2) st
C0 = { p where p is Point of (TOP-REAL 2) : |.p.| >= 1 } &
|.p1.| = 1 &
|.p2.| = 1 &
|.p3.| = 1 &
|.p4.| = 1 & ex
h being
Function of
(TOP-REAL 2),
(TOP-REAL 2) st
(
h is_homeomorphism &
h .: C0 c= C0 &
h . p1 = |[(- 1),0]| &
h . p2 = |[0,1]| &
h . p3 = |[1,0]| &
h . p4 = |[0,(- 1)]| ) holds
for
f,
g being
Function of
I[01] ,
(TOP-REAL 2) st
f is
continuous &
f is
one-to-one &
g is
continuous &
g is
one-to-one &
f . 0
= p1 &
f . 1
= p3 &
g . 0
= p4 &
g . 1
= p2 &
rng f c= C0 &
rng g c= C0 holds
rng f meets rng g
theorem Th21: :: JGRAPH_5:21
theorem Th22: :: JGRAPH_5:22
theorem Th23: :: JGRAPH_5:23
theorem Th24: :: JGRAPH_5:24
theorem Th25: :: JGRAPH_5:25
theorem Th26: :: JGRAPH_5:26
theorem Th27: :: JGRAPH_5:27
theorem Th28: :: JGRAPH_5:28
theorem Th29: :: JGRAPH_5:29
theorem Th30: :: JGRAPH_5:30
E376:
now
let P be non
empty compact Subset of
(TOP-REAL 2);
assume E30:
P = { q where q is Point of (TOP-REAL 2) : |.q.| = 1 }
;
E31:
proj1 .: P c= [.(- 1),1.]
[.(- 1),1.] c= proj1 .: P
proof
let y be
set ;
:: according to TARSKI:def 3
assume
y in [.(- 1),1.]
;
then
y in { r where r is Real : ( - 1 <= r & r <= 1 ) }
by RCOMP_1:def 1;
then consider r being
Real such that E46:
(
y = r &
- 1
<= r &
r <= 1 )
;
set q =
|[r,(sqrt (1 - (r ^2 )))]|;
E47:
dom proj1 = the
carrier of
(TOP-REAL 2)
by FUNCT_2:def 1;
E48:
(
|[r,(sqrt (1 - (r ^2 )))]| `1 = r &
|[r,(sqrt (1 - (r ^2 )))]| `2 = sqrt (1 - (r ^2 )) )
by EUCLID:56;
1
^2 >= r ^2
by , JGRAPH_2:7;
then E49:
1
- (r ^2 ) >= 0
by XREAL_1:50;
|.|[r,(sqrt (1 - (r ^2 )))]|.| =
sqrt ((r ^2 ) + ((sqrt (1 - (r ^2 ))) ^2 ))
by E31, JGRAPH_3:10
.=
sqrt ((r ^2 ) + (1 - (r ^2 )))
by , SQUARE_1:def 4
.=
1
by SQUARE_1:83
;
then E73:
|[r,(sqrt (1 - (r ^2 )))]| in P
by Th2;
proj1 . |[r,(sqrt (1 - (r ^2 )))]| =
|[r,(sqrt (1 - (r ^2 )))]| `1
by PSCOMP_1:def 28
.=
r
by EUCLID:56
;
hence
y in proj1 .: P
by , E30, , FUNCT_1:def 12;
end;
hence
proj1 .: P = [.(- 1),1.]
by Th3, XBOOLE_0:def 10;
E75:
proj2 .: P c= [.(- 1),1.]
[.(- 1),1.] c= proj2 .: P
proof
let y be
set ;
:: according to TARSKI:def 3
assume
y in [.(- 1),1.]
;
then
y in { r where r is Real : ( - 1 <= r & r <= 1 ) }
by RCOMP_1:def 1;
then consider r being
Real such that E82:
(
y = r &
- 1
<= r &
r <= 1 )
;
set q =
|[(sqrt (1 - (r ^2 ))),r]|;
E83:
dom proj2 = the
carrier of
(TOP-REAL 2)
by FUNCT_2:def 1;
E84:
(
|[(sqrt (1 - (r ^2 ))),r]| `2 = r &
|[(sqrt (1 - (r ^2 ))),r]| `1 = sqrt (1 - (r ^2 )) )
by EUCLID:56;
1
^2 >= r ^2
by E30, JGRAPH_2:7;
then E85:
1
- (r ^2 ) >= 0
by XREAL_1:50;
|.|[(sqrt (1 - (r ^2 ))),r]|.| =
sqrt (((sqrt (1 - (r ^2 ))) ^2 ) + (r ^2 ))
by , JGRAPH_3:10
.=
sqrt ((1 - (r ^2 )) + (r ^2 ))
by , SQUARE_1:def 4
.=
1
by SQUARE_1:83
;
then E86:
|[(sqrt (1 - (r ^2 ))),r]| in P
by Th2;
proj2 . |[(sqrt (1 - (r ^2 ))),r]| =
|[(sqrt (1 - (r ^2 ))),r]| `2
by PSCOMP_1:def 29
.=
r
by EUCLID:56
;
hence
y in proj2 .: P
by E30, E31, , FUNCT_1:def 12;
end;
hence
proj2 .: P = [.(- 1),1.]
by , XBOOLE_0:def 10;
end;
Lemma377:
for P being non empty compact Subset of (TOP-REAL 2) st P = { q where q is Point of (TOP-REAL 2) : |.q.| = 1 } holds
W-bound P = - 1
theorem Th31: :: JGRAPH_5:31
theorem Th32: :: JGRAPH_5:32
theorem Th33: :: JGRAPH_5:33
theorem Th34: :: JGRAPH_5:34
theorem Th35: :: JGRAPH_5:35
theorem Th36: :: JGRAPH_5:36
theorem Th37: :: JGRAPH_5:37
theorem Th38: :: JGRAPH_5:38
theorem Th39: :: JGRAPH_5:39
theorem Th40: :: JGRAPH_5:40
theorem Th41: :: JGRAPH_5:41
theorem Th42: :: JGRAPH_5:42
E412:
now
let P be non
empty compact Subset of
(TOP-REAL 2);
assume E30:
P = { p where p is Point of (TOP-REAL 2) : |.p.| = 1 }
;
reconsider g =
proj1 as
Function of
(TOP-REAL 2),
R^1 by TOPMETR:24;
set K0 =
Lower_Arc P;
reconsider g2 =
g | (Lower_Arc P) as
Function of
((TOP-REAL 2) | (Lower_Arc P)),
R^1 by PRE_TOPC:30;
E31:
for
p being
Point of
((TOP-REAL 2) | (Lower_Arc P)) holds
g2 . p = proj1 . p
then E32:
g2 is
continuous
by JGRAPH_2:39;
E33:
dom g2 = the
carrier of
((TOP-REAL 2) | (Lower_Arc P))
by FUNCT_2:def 1;
then E34:
dom g2 = Lower_Arc P
by PRE_TOPC:29;
E45:
Lower_Arc P c= P
by , E32;
rng g2 c= the
carrier of
(Closed-Interval-TSpace (- 1),1)
then reconsider g3 =
g2 as
Function of
((TOP-REAL 2) | (Lower_Arc P)),
(Closed-Interval-TSpace (- 1),1) by , FUNCT_2:4;
dom g3 = the
carrier of
((TOP-REAL 2) | (Lower_Arc P))
by FUNCT_2:def 1;
then
dom g3 = [#] ((TOP-REAL 2) | (Lower_Arc P))
;
then E49:
dom g3 = Lower_Arc P
by PRE_TOPC:def 10;
E73:
[#] (Closed-Interval-TSpace (- 1),1) c= rng g3
proof
let x be
set ;
:: according to TARSKI:def 3
assume
x in [#] (Closed-Interval-TSpace (- 1),1)
;
then
x in the
carrier of
(Closed-Interval-TSpace (- 1),1)
;
then E75:
x in [.(- 1),1.]
by TOPMETR:25;
then reconsider r =
x as
Real ;
set q =
|[r,(- (sqrt (1 - (r ^2 ))))]|;
E77:
|.|[r,(- (sqrt (1 - (r ^2 ))))]|.| =
sqrt (((|[r,(- (sqrt (1 - (r ^2 ))))]| `1 ) ^2 ) + ((|[r,(- (sqrt (1 - (r ^2 ))))]| `2 ) ^2 ))
by JGRAPH_3:10
.=
sqrt ((r ^2 ) + ((|[r,(- (sqrt (1 - (r ^2 ))))]| `2 ) ^2 ))
by EUCLID:56
.=
sqrt ((r ^2 ) + ((- (sqrt (1 - (r ^2 )))) ^2 ))
by EUCLID:56
.=
sqrt ((r ^2 ) + ((sqrt (1 - (r ^2 ))) ^2 ))
;
(
- 1
<= r &
r <= 1 )
by , RCOMP_1:48;
then
1
^2 >= r ^2
by JGRAPH_2:7;
then E78:
1
- (r ^2 ) >= 0
by XREAL_1:50;
then
0
<= sqrt (1 - (r ^2 ))
by SQUARE_1:def 4;
then E79:
- (sqrt (1 - (r ^2 ))) <= 0
by XREAL_1:60;
|.|[r,(- (sqrt (1 - (r ^2 ))))]|.| =
sqrt ((r ^2 ) + (1 - (r ^2 )))
by E49, , SQUARE_1:def 4
.=
1
by SQUARE_1:83
;
then E80:
|[r,(- (sqrt (1 - (r ^2 ))))]| in P
by ;
|[r,(- (sqrt (1 - (r ^2 ))))]| `2 = - (sqrt (1 - (r ^2 )))
by EUCLID:56;
then
|[r,(- (sqrt (1 - (r ^2 ))))]| in { p where p is Point of (TOP-REAL 2) : ( p in P & p `2 <= 0 ) }
by , Th6;
then E82:
|[r,(- (sqrt (1 - (r ^2 ))))]| in dom g3
by , , E34;
then g3 . |[r,(- (sqrt (1 - (r ^2 ))))]| =
proj1 . |[r,(- (sqrt (1 - (r ^2 ))))]|
by
.=
|[r,(- (sqrt (1 - (r ^2 ))))]| `1
by PSCOMP_1:def 28
.=
r
by EUCLID:56
;
hence
x in rng g3
by , FUNCT_1:def 5;
end;
reconsider B =
[.(- 1),1.] as non
empty Subset of
R^1 by TOPMETR:24, RCOMP_1:48;
E83:
Closed-Interval-TSpace (- 1),1
= R^1 | B
by TOPMETR:26;
for
x,
y being
set st
x in dom g3 &
y in dom g3 &
g3 . x = g3 . y holds
x = y
proof
let x be
set ,
y be
set ;
assume E84:
(
x in dom g3 &
y in dom g3 &
g3 . x = g3 . y )
;
then reconsider p1 =
x as
Point of
(TOP-REAL 2) by ;
reconsider p2 =
y as
Point of
(TOP-REAL 2) by , E49;
E85:
g3 . x =
proj1 . p1
by , E49
.=
p1 `1
by PSCOMP_1:def 28
;
E86:
g3 . y =
proj1 . p2
by , E49
.=
p2 `1
by PSCOMP_1:def 28
;
E88:
p1 in P
by E45, , E49;
p2 in P
by E45, , E49;
then consider p22 being
Point of
(TOP-REAL 2) such that E89:
(
p2 = p22 &
|.p22.| = 1 )
by ;
1
^2 = ((p2 `1 ) ^2 ) + ((p2 `2 ) ^2 )
by , JGRAPH_3:10;
then E90:
(1 ^2 ) - ((p2 `1 ) ^2 ) = (p2 `2 ) ^2
;
consider p11 being
Point of
(TOP-REAL 2) such that E94:
(
p1 = p11 &
|.p11.| = 1 )
by , Th6;
1
^2 = ((p1 `1 ) ^2 ) + ((p1 `2 ) ^2 )
by , JGRAPH_3:10;
then
(1 ^2 ) - ((p1 `1 ) ^2 ) = (p1 `2 ) ^2
;
then
(- (p1 `2 )) ^2 = (p2 `2 ) ^2
by E49, , , Th8;
then E95:
(- (p1 `2 )) ^2 = (- (p2 `2 )) ^2
;
p1 in { p3 where p3 is Point of (TOP-REAL 2) : ( p3 in P & p3 `2 <= 0 ) }
by , , E49, E34;
then consider p33 being
Point of
(TOP-REAL 2) such that E97:
(
p1 = p33 &
p33 in P &
p33 `2 <= 0 )
;
- (- (p1 `2 )) <= 0
by ;
then
- (p1 `2 ) >= 0
by XREAL_1:60;
then E98:
- (p1 `2 ) = sqrt ((- (p2 `2 )) ^2 )
by , SQUARE_1:89;
p2 in { p3 where p3 is Point of (TOP-REAL 2) : ( p3 in P & p3 `2 <= 0 ) }
by , , E49, E34;
then consider p44 being
Point of
(TOP-REAL 2) such that E99:
(
p2 = p44 &
p44 in P &
p44 `2 <= 0 )
;
- (- (p2 `2 )) <= 0
by ;
then
- (p2 `2 ) >= 0
by XREAL_1:60;
then
- (p1 `2 ) = - (p2 `2 )
by , SQUARE_1:89;
then
- (- (p1 `2 )) = p2 `2
;
then p1 =
|[(p2 `1 ),(p2 `2 )]|
by E49, , , EUCLID:57
.=
p2
by EUCLID:57
;
hence
x = y
;
end;
hence
(
proj1 | (Lower_Arc P) is
continuous Function of
((TOP-REAL 2) | (Lower_Arc P)),
(Closed-Interval-TSpace (- 1),1) &
proj1 | (Lower_Arc P) is
one-to-one &
rng (proj1 | (Lower_Arc P)) = [#] (Closed-Interval-TSpace (- 1),1) )
by , , , FUNCT_1:def 8, JGRAPH_1:63, XBOOLE_0:def 10;
end;
E417:
now
let P be non
empty compact Subset of
(TOP-REAL 2);
assume E30:
P = { p where p is Point of (TOP-REAL 2) : |.p.| = 1 }
;
reconsider g =
proj1 as
Function of
(TOP-REAL 2),
R^1 by TOPMETR:24;
set K0 =
Upper_Arc P;
reconsider g2 =
g | (Upper_Arc P) as
Function of
((TOP-REAL 2) | (Upper_Arc P)),
R^1 by PRE_TOPC:30;
E31:
for
p being
Point of
((TOP-REAL 2) | (Upper_Arc P)) holds
g2 . p = proj1 . p
then E32:
g2 is
continuous
by JGRAPH_2:39;
E33:
dom g2 = the
carrier of
((TOP-REAL 2) | (Upper_Arc P))
by FUNCT_2:def 1;
then E34:
dom g2 = Upper_Arc P
by PRE_TOPC:29;
E45:
Upper_Arc P c= P
by , E32;
rng g2 c= the
carrier of
(Closed-Interval-TSpace (- 1),1)
then reconsider g3 =
g2 as
Function of
((TOP-REAL 2) | (Upper_Arc P)),
(Closed-Interval-TSpace (- 1),1) by , FUNCT_2:4;
dom g3 = the
carrier of
((TOP-REAL 2) | (Upper_Arc P))
by FUNCT_2:def 1;
then
dom g3 = [#] ((TOP-REAL 2) | (Upper_Arc P))
;
then E49:
dom g3 = Upper_Arc P
by PRE_TOPC:def 10;
E73:
[#] (Closed-Interval-TSpace (- 1),1) c= rng g3
proof
let x be
set ;
:: according to TARSKI:def 3
assume
x in [#] (Closed-Interval-TSpace (- 1),1)
;
then
x in the
carrier of
(Closed-Interval-TSpace (- 1),1)
;
then E75:
x in [.(- 1),1.]
by TOPMETR:25;
then reconsider r =
x as
Real ;
set q =
|[r,(sqrt (1 - (r ^2 )))]|;
E77:
|.|[r,(sqrt (1 - (r ^2 )))]|.| =
sqrt (((|[r,(sqrt (1 - (r ^2 )))]| `1 ) ^2 ) + ((|[r,(sqrt (1 - (r ^2 )))]| `2 ) ^2 ))
by JGRAPH_3:10
.=
sqrt ((r ^2 ) + ((|[r,(sqrt (1 - (r ^2 )))]| `2 ) ^2 ))
by EUCLID:56
.=
sqrt ((r ^2 ) + ((sqrt (1 - (r ^2 ))) ^2 ))
by EUCLID:56
;
(
- 1
<= r &
r <= 1 )
by E49, RCOMP_1:48;
then
1
^2 >= r ^2
by JGRAPH_2:7;
then E78:
1
- (r ^2 ) >= 0
by XREAL_1:50;
then E79:
0
<= sqrt (1 - (r ^2 ))
by SQUARE_1:def 4;
|.|[r,(sqrt (1 - (r ^2 )))]|.| =
sqrt ((r ^2 ) + (1 - (r ^2 )))
by , , SQUARE_1:def 4
.=
1
by SQUARE_1:83
;
then E80:
|[r,(sqrt (1 - (r ^2 )))]| in P
by ;
|[r,(sqrt (1 - (r ^2 )))]| `2 = sqrt (1 - (r ^2 ))
by EUCLID:56;
then
|[r,(sqrt (1 - (r ^2 )))]| in { p where p is Point of (TOP-REAL 2) : ( p in P & p `2 >= 0 ) }
by Th6, ;
then E82:
|[r,(sqrt (1 - (r ^2 )))]| in dom g3
by , , E33;
then g3 . |[r,(sqrt (1 - (r ^2 )))]| =
proj1 . |[r,(sqrt (1 - (r ^2 )))]|
by
.=
|[r,(sqrt (1 - (r ^2 )))]| `1
by PSCOMP_1:def 28
.=
r
by EUCLID:56
;
hence
x in rng g3
by Th8, FUNCT_1:def 5;
end;
reconsider B =
[.(- 1),1.] as non
empty Subset of
R^1 by TOPMETR:24, RCOMP_1:48;
E83:
Closed-Interval-TSpace (- 1),1
= R^1 | B
by TOPMETR:26;
for
x,
y being
set st
x in dom g3 &
y in dom g3 &
g3 . x = g3 . y holds
x = y
proof
let x be
set ,
y be
set ;
assume E84:
(
x in dom g3 &
y in dom g3 &
g3 . x = g3 . y )
;
then reconsider p1 =
x as
Point of
(TOP-REAL 2) by ;
reconsider p2 =
y as
Point of
(TOP-REAL 2) by , ;
E85:
g3 . x =
proj1 . p1
by ,
.=
p1 `1
by PSCOMP_1:def 28
;
E86:
g3 . y =
proj1 . p2
by ,
.=
p2 `1
by PSCOMP_1:def 28
;
E88:
p1 in P
by , , ;
p2 in P
by , , ;
then consider p22 being
Point of
(TOP-REAL 2) such that E89:
(
p2 = p22 &
|.p22.| = 1 )
by ;
1
^2 = ((p2 `1 ) ^2 ) + ((p2 `2 ) ^2 )
by Th8, JGRAPH_3:10;
then E90:
(1 ^2 ) - ((p2 `1 ) ^2 ) = (p2 `2 ) ^2
;
consider p11 being
Point of
(TOP-REAL 2) such that E94:
(
p1 = p11 &
|.p11.| = 1 )
by , ;
1
^2 = ((p1 `1 ) ^2 ) + ((p1 `2 ) ^2 )
by , JGRAPH_3:10;
then E95:
(p1 `2 ) ^2 = (p2 `2 ) ^2
by , , Th6, ;
p1 in { p3 where p3 is Point of (TOP-REAL 2) : ( p3 in P & p3 `2 >= 0 ) }
by , , , E33;
then consider p33 being
Point of
(TOP-REAL 2) such that E97:
(
p1 = p33 &
p33 in P &
p33 `2 >= 0 )
;
E98:
p1 `2 = sqrt ((p2 `2 ) ^2 )
by , , SQUARE_1:89;
p2 in { p3 where p3 is Point of (TOP-REAL 2) : ( p3 in P & p3 `2 >= 0 ) }
by , , , E33;
then consider p44 being
Point of
(TOP-REAL 2) such that E99:
(
p2 = p44 &
p44 in P &
p44 `2 >= 0 )
;
p1 `2 = p2 `2
by , Th9, SQUARE_1:89;
then p1 =
|[(p2 `1 ),(p2 `2 )]|
by , , Th6, EUCLID:57
.=
p2
by EUCLID:57
;
hence
x = y
;
end;
hence
(
proj1 | (Upper_Arc P) is
continuous Function of
((TOP-REAL 2) | (Upper_Arc P)),
(Closed-Interval-TSpace (- 1),1) &
proj1 | (Upper_Arc P) is
one-to-one &
rng (proj1 | (Upper_Arc P)) = [#] (Closed-Interval-TSpace (- 1),1) )
by , , E49, FUNCT_1:def 8, JGRAPH_1:63, XBOOLE_0:def 10;
end;
theorem Th43: :: JGRAPH_5:43
theorem Th44: :: JGRAPH_5:44
theorem Th45: :: JGRAPH_5:45
theorem Th46: :: JGRAPH_5:46
theorem Th47: :: JGRAPH_5:47
theorem Th48: :: JGRAPH_5:48
theorem Th49: :: JGRAPH_5:49
theorem Th50: :: JGRAPH_5:50
theorem Th51: :: JGRAPH_5:51
theorem Th52: :: JGRAPH_5:52
theorem Th53: :: JGRAPH_5:53
theorem Th54: :: JGRAPH_5:54
theorem Th55: :: JGRAPH_5:55
theorem Th56: :: JGRAPH_5:56
theorem Th57: :: JGRAPH_5:57
theorem Th58: :: JGRAPH_5:58
theorem Th59: :: JGRAPH_5:59
theorem Th60: :: JGRAPH_5:60
theorem Th61: :: JGRAPH_5:61
theorem Th62: :: JGRAPH_5:62
for
p1,
p2,
p3,
p4 being
Point of
(TOP-REAL 2) for
P being non
empty compact Subset of
(TOP-REAL 2) st
P = { p where p is Point of (TOP-REAL 2) : |.p.| = 1 } &
LE p1,
p2,
P &
LE p2,
p3,
P &
LE p3,
p4,
P &
p1 `1 < 0 &
p1 `2 >= 0 &
p2 `1 < 0 &
p2 `2 >= 0 &
p3 `1 < 0 &
p3 `2 >= 0 &
p4 `1 < 0 &
p4 `2 >= 0 holds
ex
f being
Function of
(TOP-REAL 2),
(TOP-REAL 2) ex
q1,
q2,
q3,
q4 being
Point of
(TOP-REAL 2) st
(
f is_homeomorphism & ( for
q being
Point of
(TOP-REAL 2) holds
|.(f . q).| = |.q.| ) &
q1 = f . p1 &
q2 = f . p2 &
q3 = f . p3 &
q4 = f . p4 &
q1 `1 < 0 &
q1 `2 < 0 &
q2 `1 < 0 &
q2 `2 < 0 &
q3 `1 < 0 &
q3 `2 < 0 &
q4 `1 < 0 &
q4 `2 < 0 &
LE q1,
q2,
P &
LE q2,
q3,
P &
LE q3,
q4,
P )
theorem Th63: :: JGRAPH_5:63
for
p1,
p2,
p3,
p4 being
Point of
(TOP-REAL 2) for
P being non
empty compact Subset of
(TOP-REAL 2) st
P = { p where p is Point of (TOP-REAL 2) : |.p.| = 1 } &
LE p1,
p2,
P &
LE p2,
p3,
P &
LE p3,
p4,
P &
p1 `2 >= 0 &
p2 `2 >= 0 &
p3 `2 >= 0 &
p4 `2 > 0 holds
ex
f being
Function of
(TOP-REAL 2),
(TOP-REAL 2) ex
q1,
q2,
q3,
q4 being
Point of
(TOP-REAL 2) st
(
f is_homeomorphism & ( for
q being
Point of
(TOP-REAL 2) holds
|.(f . q).| = |.q.| ) &
q1 = f . p1 &
q2 = f . p2 &
q3 = f . p3 &
q4 = f . p4 &
q1 `1 < 0 &
q1 `2 >= 0 &
q2 `1 < 0 &
q2 `2 >= 0 &
q3 `1 < 0 &
q3 `2 >= 0 &
q4 `1 < 0 &
q4 `2 >= 0 &
LE q1,
q2,
P &
LE q2,
q3,
P &
LE q3,
q4,
P )
theorem Th64: :: JGRAPH_5:64
for
p1,
p2,
p3,
p4 being
Point of
(TOP-REAL 2) for
P being non
empty compact Subset of
(TOP-REAL 2) st
P = { p where p is Point of (TOP-REAL 2) : |.p.| = 1 } &
LE p1,
p2,
P &
LE p2,
p3,
P &
LE p3,
p4,
P &
p1 `2 >= 0 &
p2 `2 >= 0 &
p3 `2 >= 0 &
p4 `2 > 0 holds
ex
f being
Function of
(TOP-REAL 2),
(TOP-REAL 2) ex
q1,
q2,
q3,
q4 being
Point of
(TOP-REAL 2) st
(
f is_homeomorphism & ( for
q being
Point of
(TOP-REAL 2) holds
|.(f . q).| = |.q.| ) &
q1 = f . p1 &
q2 = f . p2 &
q3 = f . p3 &
q4 = f . p4 &
q1 `1 < 0 &
q1 `2 < 0 &
q2 `1 < 0 &
q2 `2 < 0 &
q3 `1 < 0 &
q3 `2 < 0 &
q4 `1 < 0 &
q4 `2 < 0 &
LE q1,
q2,
P &
LE q2,
q3,
P &
LE q3,
q4,
P )
theorem Th65: :: JGRAPH_5:65
for
p1,
p2,
p3,
p4 being
Point of
(TOP-REAL 2) for
P being non
empty compact Subset of
(TOP-REAL 2) st
P = { p where p is Point of (TOP-REAL 2) : |.p.| = 1 } &
LE p1,
p2,
P &
LE p2,
p3,
P &
LE p3,
p4,
P & (
p1 `2 >= 0 or
p1 `1 >= 0 ) & (
p2 `2 >= 0 or
p2 `1 >= 0 ) & (
p3 `2 >= 0 or
p3 `1 >= 0 ) & (
p4 `2 > 0 or
p4 `1 > 0 ) holds
ex
f being
Function of
(TOP-REAL 2),
(TOP-REAL 2) ex
q1,
q2,
q3,
q4 being
Point of
(TOP-REAL 2) st
(
f is_homeomorphism & ( for
q being
Point of
(TOP-REAL 2) holds
|.(f . q).| = |.q.| ) &
q1 = f . p1 &
q2 = f . p2 &
q3 = f . p3 &
q4 = f . p4 &
q1 `2 >= 0 &
q2 `2 >= 0 &
q3 `2 >= 0 &
q4 `2 > 0 &
LE q1,
q2,
P &
LE q2,
q3,
P &
LE q3,
q4,
P )
theorem Th66: :: JGRAPH_5:66
for
p1,
p2,
p3,
p4 being
Point of
(TOP-REAL 2) for
P being non
empty compact Subset of
(TOP-REAL 2) st
P = { p where p is Point of (TOP-REAL 2) : |.p.| = 1 } &
LE p1,
p2,
P &
LE p2,
p3,
P &
LE p3,
p4,
P & (
p1 `2 >= 0 or
p1 `1 >= 0 ) & (
p2 `2 >= 0 or
p2 `1 >= 0 ) & (
p3 `2 >= 0 or
p3 `1 >= 0 ) & (
p4 `2 > 0 or
p4 `1 > 0 ) holds
ex
f being
Function of
(TOP-REAL 2),
(TOP-REAL 2) ex
q1,
q2,
q3,
q4 being
Point of
(TOP-REAL 2) st
(
f is_homeomorphism & ( for
q being
Point of
(TOP-REAL 2) holds
|.(f . q).| = |.q.| ) &
q1 = f . p1 &
q2 = f . p2 &
q3 = f . p3 &
q4 = f . p4 &
q1 `1 < 0 &
q1 `2 < 0 &
q2 `1 < 0 &
q2 `2 < 0 &
q3 `1 < 0 &
q3 `2 < 0 &
q4 `1 < 0 &
q4 `2 < 0 &
LE q1,
q2,
P &
LE q2,
q3,
P &
LE q3,
q4,
P )
theorem Th67: :: JGRAPH_5:67
for
p1,
p2,
p3,
p4 being
Point of
(TOP-REAL 2) for
P being non
empty compact Subset of
(TOP-REAL 2) st
P = { p where p is Point of (TOP-REAL 2) : |.p.| = 1 } &
p4 = W-min P &
LE p1,
p2,
P &
LE p2,
p3,
P &
LE p3,
p4,
P holds
ex
f being
Function of
(TOP-REAL 2),
(TOP-REAL 2) ex
q1,
q2,
q3,
q4 being
Point of
(TOP-REAL 2) st
(
f is_homeomorphism & ( for
q being
Point of
(TOP-REAL 2) holds
|.(f . q).| = |.q.| ) &
q1 = f . p1 &
q2 = f . p2 &
q3 = f . p3 &
q4 = f . p4 &
q1 `1 < 0 &
q1 `2 < 0 &
q2 `1 < 0 &
q2 `2 < 0 &
q3 `1 < 0 &
q3 `2 < 0 &
q4 `1 < 0 &
q4 `2 < 0 &
LE q1,
q2,
P &
LE q2,
q3,
P &
LE q3,
q4,
P )
theorem Th68: :: JGRAPH_5:68
for
p1,
p2,
p3,
p4 being
Point of
(TOP-REAL 2) for
P being non
empty compact Subset of
(TOP-REAL 2) st
P = { p where p is Point of (TOP-REAL 2) : |.p.| = 1 } &
LE p1,
p2,
P &
LE p2,
p3,
P &
LE p3,
p4,
P holds
ex
f being
Function of
(TOP-REAL 2),
(TOP-REAL 2) ex
q1,
q2,
q3,
q4 being
Point of
(TOP-REAL 2) st
(
f is_homeomorphism & ( for
q being
Point of
(TOP-REAL 2) holds
|.(f . q).| = |.q.| ) &
q1 = f . p1 &
q2 = f . p2 &
q3 = f . p3 &
q4 = f . p4 &
q1 `1 < 0 &
q1 `2 < 0 &
q2 `1 < 0 &
q2 `2 < 0 &
q3 `1 < 0 &
q3 `2 < 0 &
q4 `1 < 0 &
q4 `2 < 0 &
LE q1,
q2,
P &
LE q2,
q3,
P &
LE q3,
q4,
P )
theorem Th69: :: JGRAPH_5:69
for
p1,
p2,
p3,
p4 being
Point of
(TOP-REAL 2) for
P being non
empty compact Subset of
(TOP-REAL 2) st
P = { p where p is Point of (TOP-REAL 2) : |.p.| = 1 } &
LE p1,
p2,
P &
LE p2,
p3,
P &
LE p3,
p4,
P &
p1 <> p2 &
p2 <> p3 &
p3 <> p4 &
p1 `1 < 0 &
p2 `1 < 0 &
p3 `1 < 0 &
p4 `1 < 0 &
p1 `2 < 0 &
p2 `2 < 0 &
p3 `2 < 0 &
p4 `2 < 0 holds
ex
f being
Function of
(TOP-REAL 2),
(TOP-REAL 2) st
(
f is_homeomorphism & ( for
q being
Point of
(TOP-REAL 2) holds
|.(f . q).| = |.q.| ) &
|[(- 1),0]| = f . p1 &
|[0,1]| = f . p2 &
|[1,0]| = f . p3 &
|[0,(- 1)]| = f . p4 )
theorem Th70: :: JGRAPH_5:70
for
p1,
p2,
p3,
p4 being
Point of
(TOP-REAL 2) for
P being non
empty compact Subset of
(TOP-REAL 2) st
P = { p where p is Point of (TOP-REAL 2) : |.p.| = 1 } &
LE p1,
p2,
P &
LE p2,
p3,
P &
LE p3,
p4,
P &
p1 <> p2 &
p2 <> p3 &
p3 <> p4 holds
ex
f being
Function of
(TOP-REAL 2),
(TOP-REAL 2) st
(
f is_homeomorphism & ( for
q being
Point of
(TOP-REAL 2) holds
|.(f . q).| = |.q.| ) &
|[(- 1),0]| = f . p1 &
|[0,1]| = f . p2 &
|[1,0]| = f . p3 &
|[0,(- 1)]| = f . p4 )
Lemma468:
( |[(- 1),0]| `1 = - 1 & |[(- 1),0]| `2 = 0 & |[1,0]| `1 = 1 & |[1,0]| `2 = 0 & |[0,(- 1)]| `1 = 0 & |[0,(- 1)]| `2 = - 1 & |[0,1]| `1 = 0 & |[0,1]| `2 = 1 )
by EUCLID:56;
E469:
now
thus |.|[(- 1),0]|.| =
sqrt (((- 1) ^2 ) + (0 ^2 ))
by Th11, JGRAPH_3:10
.=
1
by SQUARE_1:83
;
thus |.|[1,0]|.| =
sqrt (1 + 0)
by Th11, JGRAPH_3:10, SQUARE_1:59, SQUARE_1:60
.=
1
by SQUARE_1:83
;
thus |.|[0,(- 1)]|.| =
sqrt ((0 ^2 ) + ((- 1) ^2 ))
by Th11, JGRAPH_3:10
.=
1
by SQUARE_1:83
;
thus |.|[0,1]|.| =
sqrt ((0 ^2 ) + (1 ^2 ))
by Th11, JGRAPH_3:10
.=
1
by SQUARE_1:83
;
end;
Lemma470:
0 in [.0,1.]
by RCOMP_1:48;
Lemma471:
1 in [.0,1.]
by RCOMP_1:48;
theorem Th71: :: JGRAPH_5:71
for
p1,
p2,
p3,
p4 being
Point of
(TOP-REAL 2) for
P being non
empty compact Subset of
(TOP-REAL 2) for
C0 being
Subset of
(TOP-REAL 2) st
P = { p where p is Point of (TOP-REAL 2) : |.p.| = 1 } &
LE p1,
p2,
P &
LE p2,
p3,
P &
LE p3,
p4,
P holds
for
f,
g being
Function of
I[01] ,
(TOP-REAL 2) st
f is
continuous &
f is
one-to-one &
g is
continuous &
g is
one-to-one &
C0 = { p where p is Point of (TOP-REAL 2) : |.p.| <= 1 } &
f . 0
= p1 &
f . 1
= p3 &
g . 0
= p2 &
g . 1
= p4 &
rng f c= C0 &
rng g c= C0 holds
rng f meets rng g
theorem Th72: :: JGRAPH_5:72
for
p1,
p2,
p3,
p4 being
Point of
(TOP-REAL 2) for
P being non
empty compact Subset of
(TOP-REAL 2) for
C0 being
Subset of
(TOP-REAL 2) st
P = { p where p is Point of (TOP-REAL 2) : |.p.| = 1 } &
LE p1,
p2,
P &
LE p2,
p3,
P &
LE p3,
p4,
P holds
for
f,
g being
Function of
I[01] ,
(TOP-REAL 2) st
f is
continuous &
f is
one-to-one &
g is
continuous &
g is
one-to-one &
C0 = { p where p is Point of (TOP-REAL 2) : |.p.| <= 1 } &
f . 0
= p1 &
f . 1
= p3 &
g . 0
= p4 &
g . 1
= p2 &
rng f c= C0 &
rng g c= C0 holds
rng f meets rng g
theorem Th73: :: JGRAPH_5:73
for
p1,
p2,
p3,
p4 being
Point of
(TOP-REAL 2) for
P being non
empty compact Subset of
(TOP-REAL 2) for
C0 being
Subset of
(TOP-REAL 2) st
P = { p where p is Point of (TOP-REAL 2) : |.p.| = 1 } &
LE p1,
p2,
P &
LE p2,
p3,
P &
LE p3,
p4,
P holds
for
f,
g being
Function of
I[01] ,
(TOP-REAL 2) st
f is
continuous &
f is
one-to-one &
g is
continuous &
g is
one-to-one &
C0 = { p where p is Point of (TOP-REAL 2) : |.p.| >= 1 } &
f . 0
= p1 &
f . 1
= p3 &
g . 0
= p4 &
g . 1
= p2 &
rng f c= C0 &
rng g c= C0 holds
rng f meets rng g
theorem Th74: :: JGRAPH_5:74
for
p1,
p2,
p3,
p4 being
Point of
(TOP-REAL 2) for
P being non
empty compact Subset of
(TOP-REAL 2) for
C0 being
Subset of
(TOP-REAL 2) st
P = { p where p is Point of (TOP-REAL 2) : |.p.| = 1 } &
LE p1,
p2,
P &
LE p2,
p3,
P &
LE p3,
p4,
P holds
for
f,
g being
Function of
I[01] ,
(TOP-REAL 2) st
f is
continuous &
f is
one-to-one &
g is
continuous &
g is
one-to-one &
C0 = { p where p is Point of (TOP-REAL 2) : |.p.| >= 1 } &
f . 0
= p1 &
f . 1
= p3 &
g . 0
= p2 &
g . 1
= p4 &
rng f c= C0 &
rng g c= C0 holds
rng f meets rng g