|In this paper we describe geometric properties of embedded |
liftabilities of immersed 3--manifolds in 4--space
It is known that a regular homotopy class of an immersed
orientable surface in 3--space is constructed by a pair
of an embedded surface and an immersed circle on it.
We found an isotopy between embedded lifts of these constructed
immersions in 4--space,
which covers a regular homotopy of their projections in 3--space.
Also we construct non-liftable immersed 3--spheres without
immersion, surfaces, deformation, lift, isotopy
Math Review Classification
Primary 57R42 ; Secondary 57M99
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