Some compactifications of a semitopological semigroup.
Some continua admitting only trivial multiplications.
Some examples of clans.
Some finitely generated subsemigroups of S(X)
Some remarks on subgroups defined by the Bohr compactification.
Some remarks on topologically semiprime ideals
Split ...-coextensions of topological inverse semigroups.
Strongly differentiable monoids with smooth boundary.
Strongly summable ultrafilters on N and small maximal subgroups of ßN.
Subprincipal closed ideals in ßN.
Sums equal to products in ßN.
Sums of idempotents in ßN.
Sur certains éléments ergodiques dans
Sur les homomorphismes des demi-groupes compacts