Content of CMUC 21 (1980), No.4
- Demuth O., Km\'{\i }nek V.
- O svojstvach neopredelennych konstruktivnych integralov Lebega--Stil'tesa. Comment.Math.Univ.Carolinae 21(1980) 629--644.
- Vejvoda O., Kop\'a\v{c}kov\'a M.
- Periodic solutions of abstract and partial differential equations with deviation. Comment.Math.Univ.Carolinae 21(1980) 645--652.
- Frol\'{\i }k Z., Holick\'y P.
- Selections using orderings (non-separable case). Comment.Math.Univ.Carolinae 21(1980) 653--661.
- Carlson J.W.
- Prime extensions and nearness structures. Comment.Math.Univ.Carolinae 21(1980) 663--677.
- Kawohl B.
- On Liouville-theorems, continuity and H\"{o}lder continuity of weak solutions to some quasilinear elliptic systems. Comment.Math.Univ.Carolinae 21(1980) 679--697.
- Andr\'eka H., N\'emeti I.
- Does {\fam \bffam \tenbf SP}$K\supseteq $ {\fam \bffam \tenbf PS} $K$ imply axiom of choice?. Comment.Math.Univ.Carolinae 21(1980) 699--706.
- Gregor J.
- Integral representation of $n$-variable positive real functions. Comment.Math.Univ.Carolinae 21(1980) 707--717.
- Petzeltov\'a H.
- Remark on a Newton--Moser type method. Comment.Math.Univ.Carolinae 21(1980) 719--725.
- Gavalec M., Vojt\'a\v{s} P.
- Remarks to a modification of Ramsey-type theorems. Comment.Math.Univ.Carolinae 21(1980) 727--738.
- Bican L.
- A note on the splitting length of a finite direct sum of mixed Abelian groups of rank one. Comment.Math.Univ.Carolinae 21(1980) 739--747.
- Simon P.
- A compact Fr\'echet space whose square is not Fr\'echet. Comment.Math.Univ.Carolinae 21(1980) 749--753.
- Megibben Ch.K.
- Separable mixed groups. Comment.Math.Univ.Carolinae 21(1980) 755--768.
- Biryukov P.A.
- Cardinalities and ranks of $\pi $-bases in topological spaces. Comment.Math.Univ.Carolinae 21(1980) 769--776.
- Hot L.V.
- On the embedding theorem. Comment.Math.Univ.Carolinae 21(1980) 777--794.
- Proch\'azka L.
- A note on $p$-adic completion of torsion free Abelian groups. Comment.Math.Univ.Carolinae 21(1980) 795--803.
- Tarafdar E.
- On the existence of solution of the equation $L(x)=N(x)$ and a generalized coincidence degree theory, I. Comment.Math.Univ.Carolinae 21(1980) 805--823.
- Kat\v{e}tov M.
- Correction to "Extensions of the Shannon entropy to semimetrized measure spaces". Comment.Math.Univ.Carolinae 21(1980) 825--830.