Mathematica Scandinavica has been published regularly since 1953. Mathematica Scandinavica is a non-profit company, which is operated by the five mathematical societies in Scandinavia. It is the aim ...

If a space X is an H-space, then the homotopy suspension homomorphism is a monomorphism onto a direct factor in all dimensions. We present an example to show that the converse is false. Journal ...

Learning outcomes 1 Discuss, explain and utilise basic group structures and homomorphism theorems. 2 Describe and discuss basic ring properties (especially those of polynomial ring), irreducibility, ...