ЗМІСТ

Agustín-Aquino O.A.
Enumeration of strong dichotomy patterns

Andrade M.G.C., Gazon A.B., Lima A.F.
On certain homological invariant and its relation with Poincaré duality pairs

Bhoumik S., Mitra S.
On k-graceful labeling of pendant edge extension of complete bipartite graphs

Keskin Tütüncü D., Orhan Ertas N., Tribak R.
On dual Rickart modules and weak dual Rickart modules

Karimilla Bi N., Parvathi M.
Gram matrices and Stirling numbers of a class of diagram algebras, II

Krzyzanowska I.
Cross-cap singularities counted with sign

Movsisyan Yu.
On functional equations and distributive second order formulae with specialized quantifiers

Protasov I.
Some more algebra on ultrafilters in metric spaces

Sherman Z.
Square difference labeling of some union and disjoint union graphs

Skochko V.
The growth function of the adding machine

Zabka M.J.
A random Bockstein operator

Zhuchok Y.V.
Automorphisms of the endomorphism semigroup of a free abelian diband