Some remarks on subgroups defined by the Bohr compactification.
Obituary to Lee W. Anderson.
On recognition and compactification.
On certain two generator monoids.
On one Dimensional Semigroups.
Homomorphisms and Dimension.
On a centralizer result of Hunter's (correspondence between Karl Heinrich Hofmann and Robert P. Hunter).
Type of (n,k) adherence and indecomposability
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