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20K27 Subgroups (37 articles)

• Ghumashyan, Heghine; Guričan, Jaroslav: Endomorphism kernel property for finite groups. (English). Mathematica Bohemica, vol. 147 (2022), issue 3, pp. 347-358
• Tărnăuceanu, Marius: Isolated subgroups of finite abelian groups. (English). Czechoslovak Mathematical Journal, vol. 72 (2022), issue 2, pp. 615-620
• Gabriyelyan, S. S.: On extensions of bounded subgroups in Abelian groups. (English). Commentationes Mathematicae Universitatis Carolinae, vol. 55 (2014), issue 2, pp. 175-188
• Danchev, Peter; Keef, Patrick: A note on a theorem of Megibben. (English). Archivum Mathematicum, vol. 44 (2008), issue 3, pp. 245-249
• Danchev, Peter: Notes on countable extensions of $p^{\omega +n}$-projectives. (English). Archivum Mathematicum, vol. 44 (2008), issue 1, pp. 37-40
• Danchev, Peter V.: On extensions of primary almost totally projective abelian groups. (English). Mathematica Bohemica, vol. 133 (2008), issue 2, pp. 149-155
• Danchev, Peter: The generalized criterion of Dieudonné for primary valuated groups. (English). Acta Mathematica Universitatis Ostraviensis, vol. 15 (2007), issue 1, pp. 3-6
• Danchev, P. V.: Direct decompositions and basic subgroups in commutative group rings. (English). Acta Universitatis Palackianae Olomucensis. Facultas Rerum Naturalium. Mathematica, vol. 45 (2006), issue 1, pp. 53-56
• Danchev, Peter: The generalized criterion of Dieudonné for valuated $p$-groups. (English). Acta Mathematica Universitatis Ostraviensis, vol. 14 (2006), issue 1, pp. 17-19
• Megibben, Charles; Ullery, William: Isotype knice subgroups of global Warfield groups. (English). Czechoslovak Mathematical Journal, vol. 56 (2006), issue 1, pp. 109-132
• Danchev, Peter: Commutative group algebras of highly torsion-complete abelian $p$-groups. (English). Commentationes Mathematicae Universitatis Carolinae, vol. 44 (2003), issue 4, pp. 587-592
• Breaz, Simion; Călugăreanu, Grigore: Abelian groups have/are near Frattini subgroups. (English). Commentationes Mathematicae Universitatis Carolinae, vol. 43 (2002), issue 3, pp. 395-405
• Albrecht, Ulrich: $A$-projective resolutions and an Azumaya theorem for a class of mixed abelian groups. (English). Czechoslovak Mathematical Journal, vol. 51 (2001), issue 1, pp. 73-93
• Megibben, Charles; Ullery, William: Isotype subgroups of mixed groups. (English). Commentationes Mathematicae Universitatis Carolinae, vol. 42 (2001), issue 3, pp. 421-442
• Bican, Ladislav: Pure subgroups. (English). Mathematica Bohemica, vol. 126 (2001), issue 3, pp. 649-652
• Bican, Ladislav: Almost Butler groups. (English). Czechoslovak Mathematical Journal, vol. 50 (2000), issue 2, pp. 367-378
• Fuchs, L.; Viljoen, G.: Valuated Butler groups of special type. (English). Czechoslovak Mathematical Journal, vol. 49 (1999), issue 3, pp. 507-516
• Hill, Paul; Megibben, Charles: The nonseparability of simply presented mixed groups. (English). Commentationes Mathematicae Universitatis Carolinae, vol. 39 (1998), issue 1, pp. 1-5
• Goeters, H. Pat; Ullery, William: Quasi-balanced torsion-free groups. (English). Commentationes Mathematicae Universitatis Carolinae, vol. 39 (1998), issue 3, pp. 431-443
• Müller, Edgar; Mutzbauer, Otto: Schichtengleiche Gewichte und Butlergruppen. (German) [Groups with equal layers and Butler groups]. Czechoslovak Mathematical Journal, vol. 47 (1997), issue 2, pp. 193-204
• Hill, Paul; Ullery, William: Almost totally projective groups. (English). Czechoslovak Mathematical Journal, vol. 46 (1996), issue 2, pp. 249-258
• Bican, Ladislav: Butler groups and Shelah's Singular Compactness. (English). Commentationes Mathematicae Universitatis Carolinae, vol. 37 (1996), issue 1, pp. 171-178
• Uspenskii, V. V.: On the Suslin number of subgroups of products of countable groups. (English). Acta Universitatis Carolinae. Mathematica et Physica, vol. 36 (1995), issue 2, pp. 85-87
• Bican, Ladislav: Butler groups of infinite rank. (English). Czechoslovak Mathematical Journal, vol. 44 (1994), issue 1, pp. 67-79
• Rangaswamy, K. M.: A property of $B_2$-groups. (English). Commentationes Mathematicae Universitatis Carolinae, vol. 35 (1994), issue 4, pp. 627-631
• Müller, Edgar; Mutzbauer, Otto: Regularität in torsionsfreien abelschen Gruppen. (German) [Regularity in torsion-free abelian groups]. Czechoslovak Mathematical Journal, vol. 42 (1992), issue 2, pp. 279-288
• Bican, Ladislav: On a class of locally Butler groups. (English). Commentationes Mathematicae Universitatis Carolinae, vol. 32 (1991), issue 4, pp. 597-600
• Giovannitti, Anthony; Goeters, H. Pat; Metelli, Claudia: Cobalanced exact sequences. (English). Commentationes Mathematicae Universitatis Carolinae, vol. 30 (1989), issue 4, pp. 637-641
• Bican, Ladislav; Hora, Jaroslav: On a class of locally completely decomposable Abelian groups. (English). Commentationes Mathematicae Universitatis Carolinae, vol. 27 (1986), issue 2, pp. 307-323
• Bečvář, J.: $N$-pure-high subgroups of abelian groups. (English). Acta Universitatis Carolinae. Mathematica et Physica, vol. 26 (1985), issue 1, pp. 21-33
• Bečvář, Jindřich: A note on $H$-high subgroups of abelian groups. (English). Commentationes Mathematicae Universitatis Carolinae, vol. 25 (1984), issue 1, pp. 55-59
• O'Neill, John D.: On summands of direct products of Abelian groups. (English). Commentationes Mathematicae Universitatis Carolinae, vol. 24 (1983), issue 3, pp. 407-413
• Procházka, Ladislav: A note on $p$-adic completion of torsion-free abelian groups. (English). Commentationes Mathematicae Universitatis Carolinae, vol. 21 (1980), issue 4, pp. 795-803
• Bican, Ladislav: A note on the splitting length of a finite direct sum of mixed Abelian groups of rank one. (English). Commentationes Mathematicae Universitatis Carolinae, vol. 21 (1980), issue 4, pp. 739-747
• Bican, Ladislav: Purely finitely generated Abelian groups. (English). Commentationes Mathematicae Universitatis Carolinae, vol. 21 (1980), issue 2, pp. 209-218
• Megibben, Charles K.: Separable mixed groups. (English). Commentationes Mathematicae Universitatis Carolinae, vol. 21 (1980), issue 4, pp. 755-768
• Bican, Ladislav: Pure subgroups split. (English). Commentationes Mathematicae Universitatis Carolinae, vol. 20 (1979), issue 2, pp. 283-292