1975/89/1

Groups in the category of f-manifolds

Reducing hyperarithmetic sequences

On Δ-spaces and fundamental dimension in the sense of Borsuk

Kurepa's hypothesis and the continuum

Results and problems concerning compactifications, compact subtopologies, and mappings

Infinite dimensional non-symmetric Borsuk-Ulam theorem

Wide tree-like spaces have a fixed point

On the fundamental dimension of approximatively 1-connected compacta

Compact metric spaces have binary bases