theorem
for
P being non
empty compact Subset of
(TOP-REAL 2) for
e being
Real st
P is
being_simple_closed_curve &
e > 0 holds
ex
h being
FinSequence of the
carrier of
(TOP-REAL 2) st
(
h . 1
= W-min P &
h is
one-to-one & 8
<= len h &
rng h c= P & ( for
i being
Nat st 1
<= i &
i < len h holds
LE h /. i,
h /. (i + 1),
P ) & ( for
i being
Nat for
W being
Subset of
(Euclid 2) st 1
<= i &
i < len h &
W = Segment (
(h /. i),
(h /. (i + 1)),
P) holds
diameter W < e ) & ( for
W being
Subset of
(Euclid 2) st
W = Segment (
(h /. (len h)),
(h /. 1),
P) holds
diameter W < e ) & ( for
i being
Nat st 1
<= i &
i + 1
< len h holds
(Segment ((h /. i),(h /. (i + 1)),P)) /\ (Segment ((h /. (i + 1)),(h /. (i + 2)),P)) = {(h /. (i + 1))} ) &
(Segment ((h /. (len h)),(h /. 1),P)) /\ (Segment ((h /. 1),(h /. 2),P)) = {(h /. 1)} &
(Segment ((h /. ((len h) -' 1)),(h /. (len h)),P)) /\ (Segment ((h /. (len h)),(h /. 1),P)) = {(h /. (len h))} &
Segment (
(h /. ((len h) -' 1)),
(h /. (len h)),
P)
misses Segment (
(h /. 1),
(h /. 2),
P) & ( for
i,
j being
Nat st 1
<= i &
i < j &
j < len h &
i,
j aren't_adjacent holds
Segment (
(h /. i),
(h /. (i + 1)),
P)
misses Segment (
(h /. j),
(h /. (j + 1)),
P) ) & ( for
i being
Nat st 1
< i &
i + 1
< len h holds
Segment (
(h /. (len h)),
(h /. 1),
P)
misses Segment (
(h /. i),
(h /. (i + 1)),
P) ) )