Content of CMUC 22 (1981), No.3

Bukovský L., Butkovičová E.
Ultrafilter with $\aleph _0$ predecessors in Rudin--Frolík order. Comment.Math.Univ.Carolinae 22(1981) 429--447.
Poljak S., Pultr A.
Representing graphs by means of strong and weak products. Comment.Math.Univ.Carolinae 22(1981) 449--466.
Jirásko J.
Notes on generalized prime and coprime modules, I. Comment.Math.Univ.Carolinae 22(1981) 467--482.
Jirásko J.
Notes on generalized prime and coprime modules, II. Comment.Math.Univ.Carolinae 22(1981) 483--495.
Demuth O.
O psevdodifferenciruemosti ravnomerno nepreryvnych konstruktivnych funkcij po funkcijam togo že tipa. Comment.Math.Univ.Carolinae 22(1981) 497--512.
Ježek J., Kepka T.
Semigroup representations of medial groupoids. Comment.Math.Univ.Carolinae 22(1981) 513--524.
Banaś J., Stopka U.
The existence and some properties of solutions of a differential equation with deviated argument. Comment.Math.Univ.Carolinae 22(1981) 525--536.
Węgrzynowski S.
Disconnected regular $s$-manifolds. Comment.Math.Univ.Carolinae 22(1981) 537--547.
Zajíček L.
On approximate Dini derivates and one-sided approximate derivatives of arbitrary functions. Comment.Math.Univ.Carolinae 22(1981) 549--560.
Tišer J.
On strict preponderant maxima. Comment.Math.Univ.Carolinae 22(1981) 561--567.
Bican L.
A note on factor-splitting Abelian groups of rank two. Comment.Math.Univ.Carolinae 22(1981) 569--578.
Markl M.
Regular functions over conformal quaternionic manifolds. Comment.Math.Univ.Carolinae 22(1981) 579--583.
Hájek P.
Completion closed algebras and models of Peano arithmetic. Comment.Math.Univ.Carolinae 22(1981) 585--594.
Yue Chi Ming R.
On biregural and regular rings. Comment.Math.Univ.Carolinae 22(1981) 595--606.
Demuth O.
Ob odnom obobščenii konstruktivnogo analoga teoremy K.M. Garga. Comment.Math.Univ.Carolinae 22(1981) 607--620.
Tkačenko M.G.
Some results on inverse spectra, I. Comment.Math.Univ.Carolinae 22(1981) 621--633.