Sommaire

Semi-homomorphisms of near-rings.
p. 3
On finite sphere-packings.
p. 19
Projections, skewness and related constants in real normed spaces.
p. 31
Localization families for real function algebras.
p. 49
Simultaneous extensions of proximities, semi-uniformities, contiguities and merotopies. IV.
p. 57
On unital extensions of near-rings and their radicals.
p. 77
A continuous and a discrete variant of Wirtinger's inequality.
p. 83
Powers and generalized cardinal numbers for HCH-objects --- basic notions.
p. 91
Complex interpolation and property.
p. 117