A hypermaps is, in its topological form, a cellular embedding of a connected hypergraph on a compact

Let R be a ring with identity. By a central ideal of R we mean an ideal of R which can be generated

We consider rings whose injective hulls of simple modules are locally Artinian. After a brief discus

Proper classes were introduced by Buchsbaum to axiomatize conditions under which a class of short ex

We introduce a new notion of exact sequences in arbitrary pointed (non-exact) categories. We apply t

The ring of Hurwitz integers, being both a left and a right PID, could be thought of as being arithm

Ore localisation is a classical way to obtain ring epimorphisms with a flatness condition. Universal

We prove a generalized version of a conjecture of A. Tyszka on the relative magnitude of solutions o

A ring R is called right McCoy if whenever non-zero polynomials f (x) and g(x) in R[x] satisfy f (x)

Last year, Izakhian and Rhodes developed a theory of representation of matroids by boolean matrices