At the present time, the average undergraduate mathematics major finds
mathematics heavily compartmentalized. After the calculus, he takes a
course in analysis and a course in algebra. Depending upon his interests
(or those of his department), he takes courses in special topics. Ifhe
is exposed to topology, it is usually straightforward point set
topology; if he is exposed to geom- etry, it is usually classical
differential geometry. The exciting revelations that there is some unity
in mathematics, that fields overlap, that techniques of one field have
applications in another, are denied the undergraduate. He must wait
until he is well into graduate work to see interconnections, presumably
because earlier he doesn't know enough. These notes are an attempt to
break up this compartmentalization, at least in topology-geometry. What
the student has learned in algebra and advanced calculus are used to
prove some fairly deep results relating geometry, topol- ogy, and group
theory. (De Rham's theorem, the Gauss-Bonnet theorem for surfaces, the
functorial relation of fundamental group to covering space, and surfaces
of constant curvature as homogeneous spaces are the most note- worthy
examples.) In the first two chapters the bare essentials of elementary
point set topology are set forth with some hint ofthe subject's
application to functional analysis.