The extending surfaces of immersions into surfaces

Abstract

S. Blank solved the question of classifying immersed circles in ${\mathbb{R}}^2$ that extend to immersed disks, and how many topologically inequivalent disks can be extended. The quetions of various cases in $2$-dimension have already been solved by generalizing his method. In this paper, we give a new way, which is straightforward for the questions, and we determine all topological equivalence classes of immersed surfaces bounded by an arbitrary immersed circle in a closed oriented surface.

References in corpus (1)

• The Golden Age of Immersion Theory in Topology: 1959-1973