ЗМІСТ

Drensky V., Holtkamp R.
Planar trees, free nonassociative algebras, invariants, and elliptic integrals

Guo X., Shum K.P.
Baer semisimple modules and Baer rings

Hutsko V.N., Skiba A.N.
On well p-embedded subgroups of finite groups

Jacobs D.P., Rayes M.O., Trevisan V.
Characterization of Chebyshev Numbers

Pikuta P.
Exact values of girth for some graphs D(k,q) and upper bounds of the order of cages

Pluhar G., Wood J.
The free spectra of varieties generated by idempotent semigroups

Protasov I.V.
Balleans of bounded geometry and G-spaces

Safonov V.G.
On τ-closed totally saturated group formations with Boolean sublattices

Vyshnevetskiy A.L., Zhmud E.M.
Random walks on finite groups converging after finite number of steps

Favorov S., Novikov B., Vyshnevetskiy A., Zholtkevich G.
Emmanuil Moiseevich Zhmud’ (1918-2007)