theorem Th73: :: JGRAPH_4:73

for cn being Real
for p2 being Point of (TOP-REAL 2) st - 1 < cn & cn < 1 holds
ex K being non empty compact Subset of (TOP-REAL 2) st
( K = (cn -FanMorphN) .: K & ex V2 being Subset of (TOP-REAL 2) st
( p2 in V2 & V2 is open & V2 c= K & (cn -FanMorphN) . p2 in V2 ) )