1991/138/2

A lattice of conditions on topological spaces II

Formalizing a non-linear Henkin quantifier

${\displaystyle F_{\sigma }}$-ideals and ${\displaystyle {\omega }_1{\omega }^{\cdot }\_1}$-gaps in the Boolean algebras Ρ(ω)/I.

A splitting theorem for multipeak path algebras

Sets of end-points and ramification points in dendroids

Strong cellularity and global asymptotic stability