39 research outputs found
Chemical ionization of phenyl n-propyl ether and methyl substituted analogs: Propene loss initiated by competing proton transfer to the oxygen atom and the aromatic ring
Mathias–Prikry and Laver type forcing; summable ideals, coideals, and +-selective filters
Selections on -spaces
summary:We show that if \Cal A is an uncountable AD (almost disjoint) family of subsets of then the space \Psi(\Cal A) does not admit a continuous selection; moreover, if \Cal A is maximal then \Psi(\Cal A) does not even admit a continuous selection on pairs, answering thus questions of T. Nogura