theorem Th26: :: JGRAPH_5:26

for cn being Real
for q being Point of (TOP-REAL 2) st - 1 < cn & cn < 1 & q `2 < 0 & (q `1) / |.q.| > cn holds
for p being Point of (TOP-REAL 2) st p = (cn -FanMorphS) . q holds
( p `2 < 0 & p `1 > 0 )