Mathematics – Geometric Topology
Scientific paper
2002-08-24
Mathematics
Geometric Topology
22 pages
Scientific paper
It was proved by H. Whitney in 1933 that it is possible to mark a point in all curves in a continuous way. The main result of this paper extends the Whitney theorem to dimensions 2 and 3. Namely, we prove that it is possible to choose a point continuously in all two-dimensional surfaces sufficiently close to a given surface, and in all 3-manifolds sufficiently close to a given 3-manifold.
Brodsky N.
Chigogidze Alex
Shchepin Evgenij V.
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