50 citations · 85 across the 7 of their papers we have counts for
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math.GT2004
Morse theory, graphs, and string topology
Ralph L. Cohen
In these lecture notes we discuss a body of work in which Morse theory is used to construct various homology and cohomology operations. In the classical setting of algebraic topolo…
math.AT2004★ 2 cited
The topology of the category of open and closed strings
Nils A. Baas, Ralph L. Cohen, Antonio Ramirez
In this paper we study the topology of the cobordism category of open and closed strings. This is a 2-category in which the objects are compact one-manifolds whose boundary compone…