be a one-to-one correspondence
of the points in a plane
Prove or disprove the following statement:
"If f maps circles to circles, then it maps straight lines to straight lines."
(In reply to A thought
by Bernie Hunt)
It's supposed to be a 1-to-1 correspondence. Sending everything to point P is many-to-1.
Posted by Charlie
on 2006-11-16 10:42:11