2 papers
math.RA2004
Universal localization of triangular matrix rings
Desmond Sheiham
If R is a triangular 2x2 matrix ring, the columns, P and Q, are projective left R-modules. We describe the universal localization of R which makes invertible an R-module morphism P…
math.AT2004
Invariants of Boundary Link Cobordism II. The Blanchfield-Duval Form
Desmond Sheiham
We use the Blanchfield-Duval form to define complete invariants for the cobordism group C_{2q-1}(F_μ) of (2q-1)-dimensional μ-component boundary links (for q\geq2). The author solv…