williams@kirk.DEC (John Williams 223-3402) (11/30/84)
There is one I can think of off hand. This is a case of
reducing the dimensions and working from there. This will
describe an infinite two dimensional surface split into two
infinite surfaces by a finite line. Imagine an infinitely long
cylinder with a line going laterally around the circumference to
form a circle. Now translate the cylinder in a manner similar to
how you would translate a sphere into a finite yet unbounded
space. You will end up with a spacial manifold that is finite in
two dimensions, yet infinite in the third. The plane will align
with the two finite dimensions. It should be noted that this has
not been observed in our known universe. Another example might be
to have an infinitely long corridor with wrap around on the
sides to form a two toroid universe. If the plane is properly
aligned, it will wrap around onto itself.
----{ john williams }----
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