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The sugarcane stemborer Eldana saccharina is an indigenous African moth found throughout much of subsaharan Africa. Previous research has revealed ecological differences among geographical populations, raising the possibility that E. saccharina may consist of different biotypes. As a first step towards evaluating this hypothesis, E. saccharina populations… (More)
We determine rank numbers for the prism graph P 2 ×C n (P 2 being the connected two-node graph and C n a cycle of length n) and for the square of an even cycle.
Recall that algebraic sets are characterized by resolution tower structures [AK1], [AK2]. A topological space with such a structure is called a TR space for short. In low dimensions existence of resolution tower structures can often be detected by combinatorial invariants of the underlying topological spaces. For example, let X be a locally cone-like Euler… (More)