
A note on the number of cyclic subgroups of a finite group (with M.S. Lazorec), submitted.

Minimal nonIwasawa finite groups, submitted, cited by:
 M.S. Lazorec, Relative cyclic subgroup commutativity degrees of finite groups, 2018.

Breaking points in the poset of conjugacy classes of subgroups of a finite group, submitted.

Finite groups with two relative subgroup commutativity degrees (with M.S. Lazorec), submitted, cited by:
 M.S. Lazorec, Relative cyclic subgroup commutativity degrees of finite groups, 2018.

Breaking points in centralizer lattices, submitted.

Another class of finite groups whose ChermakDelgado lattice is a chain of length zero (with R. McCulloch), submitted.

On some probabilistic aspects of (generalized) dicyclic groups (with M.S. Lazorec), submitted, cited by:
 M.S. Lazorec, Probabilistic aspects of ZMgroups, 2017.

Finite groups with a certain number of cyclic subgroups II, submitted, cited by:
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 W. Zhou, Finite groups with small number of cyclic subgroups, 2016.

A characterization of PSL(2,q), q=5,7, submitted.

Addendum to "On a generalization of the Gauss formula", accepted for publication in AsianEur. J. Math.

A nilpotency criterion for finite groups, accepted for publication in Acta Math. Hung., cited by:
 A.D. Ramos, A. Viruel, A pnilpotency criterion for finite groups, 2018.

A note on subgroup commutativity degrees of finite groups, accepted for publication in Quaest. Math.

Cyclic factorization numbers of finite groups (with M.S. Lazorec), accepted for publication in Ars Combin., cited by:
 M.S. Lazorec, Probabilistic aspects of ZMgroups, 2017.

Cyclic subgroup commutativity degrees of finite groups (with M.S. Lazorec), accepted for publication in Rend. Semin. Mat. Univ. Padova, cited by:
 M.S. Lazorec, Probabilistic aspects of ZMgroups, 2017.
 M.S. Lazorec, Relative cyclic subgroup commutativity degrees of finite groups, 2018.

Factorization numbers of finite rank 3 abelian pgroups, accepted for publication in J. Combin. Math. Combin. Comput.

Two classes of finite groups whose ChermakDelgado lattice is a chain of length zero (with R. McCulloch), Comm. Algebra, vol. 46 (2018), no. 7, 30923096
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On the poset of classes of isomorphic subgroups of a finite group, Int. J. Open Problems Compt. Math., vol. 11 (2018), no. 3, 3236
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A note on the ChermakDelgado lattice of a finite group, Comm. Algebra, vol. 46 (2018), no. 1, 201204
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The ChermakDelgado lattice of ZMgroups, Results Math., vol. 72 (2017), no. 4, 18491855, ZBL 06832345
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Addendum to "On finite groups with perfect subgroup order subsets", Int. J. Open Problems Compt. Math., vol. 10 (2017), no 2, 1719
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Finite groups determined by an inequality of the orders of their subgroups II, Comm. Algebra, vol. 45 (2017), no. 11, 48654868, ZBL 1375.20025
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A note on a class of gyrogroups, Quasigroups Related Systems, vol. 25 (2017), no. 1, 151154, ZBL 1371.20059
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On the number of subgroups of a given exponent in a finite abelian group (with L. Tóth), Publ. Inst. Math. Beograd, vol. 101 (115) (2017), 121133
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On a generalization of the Gauss formula, AsianEur. J. Math., vol. 10 (2017), no. 1, article ID 1750008, ZBL 1367.20025
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The posets of classes of isomorphic subgroups of finite groups, Bull. Malays. Math. Sci. Soc., vol. 40 (2017), no. 1, 163172, MR 3592900, ZBL 1356.20011
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On the factorization numbers of some finite pgroups, Ars Combin., vol. 128 (2016), 39, MR 3526148, ZBL 06644255
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 D.E. Otera, F.G. Russo, Permutability degrees of finite groups, Filomat, vol. 30 (2016), no. 8, 21652175.
 Y. Wang, G. Peng, F. Zhou, Factorization number of a class of generalized extraspecial pgroups,
Henan Sci., vol. 34 (2016), no. 12, 19491955.
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On the number of diamonds in the subgroup lattice of a finite abelian group (with D.G. Fodor), Sci. An. Univ. "Ovidius" Constanţa, ser. Math., vol. XXIV (2016), fasc. 2, 205215, MR 3546637, ZBL 06805909
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A new equivalence relation to classify the fuzzy subgroups of finite groups, Fuzzy Sets and Systems, vol. 289 (2016), 113121, MR 3454465, ZBL 1374.20077
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The number of chains of subgroups of a finite elementary abelian pgroup, Sci. Bull., Ser. A, Appl. Math. Phys., Politeh. Univ. Buchar., vol. 77 (2015), no. 4, 6568, MR 3452533, ZBL 1363.20076
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A generalization of the Euler's totient function, AsianEur. J. Math., vol. 8 (2015), no. 4, article ID 1550087, MR 3424162, ZBL 1336.20029
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Solitary subgroups and solitary quotients of ZMgroups, Sci. Stud. Res., Ser. Math. Inform., vol. 25 (2015), no. 1, 237242, MR 3384660, ZBL 1349.20018
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Finite groups with a certain number of cyclic subgroups, Amer. Math. Monthly, vol. 122 (2015), no. 3, 275276, MR 3327719, ZBL 1328.20045
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Cyclicity degrees of finite groups (with L. Tóth), Acta Math. Hung., vol. 145 (2015), no. 2, 489504, MR 3325804, ZBL 1348.20027
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On finite groups with dismantlable subgroup lattices, Canad. Math. Bull., vol. 52 (2015), no. 1, 182187, MR 3303222, ZBL 1323.20019
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The normal subgroup structure of ZMgroups, Ann. Mat. Pura Appl., vol. 193 (2014), no. 4, 10851088, MR 3237917, ZBL 1304.20034
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Remarks on the exponent function associated to a finite group, Sci. Stud. Res., Ser. Math. Inform., vol. 24 (2014), no. 1, 141147, MR 3245073, ZBL 1313.20013
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On finite groups with perfect subgroup order subsets, Int. J. Open Problems Compt. Math., vol. 7 (2014), no. 1, 4146
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On the sum of element orders of finite abelian groups (with D.G. Fodor), Sci. An. Univ. "Al. I. Cuza" Iaşi, ser. Math., tome LX (2014), fasc. 1, 17, MR 3252452, ZBL 1299.20059
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Some combinatorial aspects of finite Hamiltonian groups, Bull. Iranian Math. Soc., vol. 39 (2013), no. 5, 841854, MR 3126183, ZBL 1303.20020
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A note on the product of element orders of finite abelian groups, Bull. Malays. Math. Sci. Soc., vol. 36 (2013), no. 4, 11231126, MR 3108800, ZBL 1280.20058
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On the number of fuzzy subgroups of finite symmetric groups, J. Mult.Valued Logic Soft Comput., vol. 21 (2013), no. 12, 201213, MR 3113673
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Counting certain sublattices in the subgroup lattice of a finite abelian group (with D.G. Fodor), Sci. An. Univ. Craiova, vol. 40 (2013), no. 1, 106111, MR 3078964, ZBL 1289.20033
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A characterization of the quaternion group, Sci. An. Univ. "Ovidius" Constanţa, ser. Math., vol. XXI (2013), fasc. 1, 209214, MR 3065384
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Classifying fuzzy subgroups for a class of finite pgroups, Critical Review (a publication of Society for Mathematics of Uncertainty), vol. VII (2013), 3039
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D_{2p} × Z_q and finite groups of order n <= 20, J. Intell. Fuzzy Syst., vol. 33
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A note on fundamental group lattices, Bull. Univ. "Transilvania" Braşov, ser. III, vol. 5 (2012), no. 2, 107112, MR 3035862, ZBL 1324.20032
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A note on the lattice of fuzzy subgroups of a finite group, J. Mult.Valued Logic Soft Comput., vol. 19 (2012), no. 56, 537545, MR 3012373
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A generalization of Menon's identity, J. Number Theory, vol. 132 (2012), no. 11, 25682573, MR 2954990, ZBL 1276.11010
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Classifying fuzzy subgroups of finite nonabelian groups, Iran. J. Fuzzy Syst., vol. 9 (2012), no. 4, 3343, MR 3112759, ZBL 1260.20092
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Some open problems on a class of finite groups, Int. J. Open Problems Compt. Math., vol. 5 (2012), no. 2, 8894
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On an open problem by J.N. Mordeson, K.R. Bhutani and A. Rosenfeld, Critical Review (a publication of Society for Mathematics of Uncertainty), vol. VI (2012), 38, ZBL 1275.20072
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Finite groups determined by an inequality of the orders of their elements, Publ. Math. Debrecen, vol. 80 (2012), no. 34, 457463, MR 2943017, ZBL 1261.20028
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Solitary quotients of finite groups, Cent. Eur. J. Math., vol. 10 (2012), no. 2, 740747, MR 2886569, ZBL 1257.20024
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A note on subgroup coverings of finite groups, Sci. An. Univ. Timişoara, ser. Math.Inform., tome XLIX (2011), fasc. 2, 129135, MR 2949162, ZBL 1260.20041
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Finite groups determined by an inequality of the orders of their normal subgroups, Sci. An. Univ. "Al. I. Cuza" Iaşi, ser. Math., tome LVII (2011), fasc. 2, 229238, MR 2933379, ZBL 1240.20035
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Addendum to "Subgroup commutativity degrees of finite groups", J. Algebra, vol. 337 (2011), no. 1, 363368, MR 2796081, ZBL 1233.20023
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Pseudocomplementation in (normal) subgroup lattices (with T. De Medts), Comm. Algebra, vol. 39 (2011), no. 1, 247262, MR 2770893, ZBL 1218.20014
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On the total number of principal series of a finite abelian group (with L. Bentea), Sci. An. Univ. "Ovidius" Constanţa, ser. Math., vol. XVIII (2010), fasc. 2, 4152, MR 2785793, ZBL 1224.05501
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