Higher Non-orientable Surfaces
By glueing together projective planes successively we get non-orientable surfaces of higher demigenus. The glueing process consists of cutting out a little disk from each surface and identifying (glueing) their boundary circles. Glueing two projective planes creates the Klein bottle.
The article on the fundamental polygon describes the higher non-orientable surfaces.
Read more about this topic: Real Projective Plane
Famous quotes containing the words higher and/or surfaces:
“I find myself both as man and as myself something more determined and distinctive, at pitch, more distinctive and higher pitched than anything else I see.”
—Gerard Manley Hopkins (1844–1889)
“Footnotes are the finer-suckered surfaces that allow tentacular paragraphs to hold fast to the wider reality of the library.”
—Nicholson Baker (b. 1957)