The Hilbert cube is the product:
It plays a central role in Borsuk's shape theory, and is the basis for the construction of Hilbert cube manifolds. The theory of these were developed by Tom Chapman (mid 1970s) and were used in his proof of the topological invariance of Whitehead torsion?.
It has an important subspace known as its pseudo-interior. This is the product of the corresponding open intervals,
This plays an essential role in the Chapman complement theorem.
Let be the Hilbert cube.
The Hilbert cube has some counterintuitive properties, such as the fact that it is a homogeneous space (i.e., the group of self-homeomorphisms acts transitively on ), even though it seems to have a “boundary”. See Halverson and Wright for some explicit constructions.
T.A.Chapman, On Some Applications of Infinite Dimensional Manifolds to the Theory of Shape, Fund. Math. &6 (1972), 181 - 193.
T.A. Chapman, Lectures on Hilbert Cube Manifolds, CBMS 28, American Mathematical Society, Providence, RI, 1975
Denise M. Halverson, David G. Wright, The Homogeneous Property of the Hilbert Cube, http://arxiv.org/pdf/1211.1363v1.pdf