Dr. Maria Zeltser

Institute of Mathematics and Natural Sciences

Tallinn University, Estonia

Senior researcher

Email: mariaz@tlu.ee

Qualifications

2001 Ph.D., Tartu University, Mathematics

1997 M.Sc., Tartu University, Mathematics

1996 B.Sc., Tartu University, Mathematics

1996 B.Sc., Tartu University, Statistics 

Publications (Selected)

1. Zeltser, Maria (2014). Weak monotonicity concept and its applications. Fourth Finnish-Estonian Mathematics Colloquium and Finnish Mathematical Days 2014, University of Helsinki, 9-10 January 2014 . , 2014.
2. Zeltser, Maria (2013). Bounded domains of generalized Riesz methods with the Hahn property. Journal of Function Spaces and Applications, 2013, 1 - 8.
3. Zeltser, Maria (2013). On equiconvergence of number series. Mathematica Slovaca, 63(6), 1333 - 1346.
4. Zeltser, Maria (2013). The Hahn property of bounded domains of some matrix methods . In: 11TH INTERNATIONAL CONFERENCE OF NUMERICAL ANALYSIS AND APPLIED MATHEMATICS 2013: ICNAAM 2013: Numerical Analysis and Applied Mathematics ICNAAM 2013: Rhodes, Greece, 21–27 September 2013. (Toim.) Theodore Simos , George Psihoyios and Ch. Tsitouras ., 2013, (AIP Conference Proceedings), 770 - 773.
5. Zeltser, Maria (2013). On the Hahn property of bounded domains of special matrix methods. In: Kangro-100 : Methods of Analysis and Algebra, International conference dedicated to the centennial of professor Gunnar Kangro, Tartu, Estonia, September 1-6, 2013, Book of Abstracts: Kangro-100 : Methods of Analysis and Algebra, International conference dedicated to the centennial of professor Gunnar Kangro, Tartu, Estonia, September 1-6, 2013. (Toim.) Oja, E.; Kaarli, K.; Lissitsin, A.; Mikkor, K.; Põldvere, M.; Zolk, I.. Tartu: Estonian Mathematical Society, 2013, 143 - 143.
6. Zeltser, Maria (2013). Weak monotonicity in number series and Hardy inequalities.
7. Zeltser, Maria (2012). Between kth term test and Abel-Olivier's test. 3rd Dolomites Workshop on Constructive Approximation and Applications, Alba di Canazei, September 9-14, 2012. , 2012, 126 - 126.
8. Liflyand, Elijah; Tikhonov, Sergei; Zeltser, Maria (2011). Extending tests for convergence of number series. Journal of Mathematical Analysis and Applications, 377(1), 194 - 206.
9. Karaev, Mubariz; Zeltser, Maria (2010). On Abel Convergence of Double Sequences. Numerical Functional Analysis and Optimization, 31(10), 1185 - 1189.
10. Liflyand, Elijah; Tikhonov, Sergei; Zeltser, Maria (2010). Extending tests for convergence of number series. International workshop "Approximation theory", St. Petersburg, Venemaa, 06-08 mai 2010. St. Petersburg:, 2010, 129 - 130.
11. Zeltser, Maria (2010). On Convergence of Number Series. International Conference on Mathematical Analysis 2010, 7-9 December 2010, Tawana Hotel, Bangkok, THAILAND. , 2010, 23 - 23.
12. Zeltser, M.; Mursaleen, M.; Mohiuddine, S.A. (2009). On almost conservative matrix methods for double sequence spaces. Publicationes Mathematicae Debrecen, 75, 387 - 399.
13. Limaye, Balmohan V.; Zeltser, Maria (2009). On the Pringsheim convergence of double series. Proceedings of the Estonian Academy of Sciences, 58(2), 108 - 121.
14. Zeltser, Maria (2008). Sequences of 0's and 1's. Hahn properties. . In: Approximations, Harmonic Analysis, Operators and Sequences. Research Communications of the Workshop held in Narva-Jõesuu, Estonia, October 3-5, 2008: Approximations, Harmonic Analysis, Operators and Sequences. Narva-Jõesuu, Estonia, October 3-5, 2008. (Toim.) Kivinukk, A.; Tamberg, G.. Tartu: Eesti Matemaatika Selts, 2008, 16 - 18.
15. Zeltser, Maria (2008). Sequence spaces with the separable Hahn property. Mathematics Workshop Days (Summabillity, Sequence spaces and Applications) Istanbul Commerce University, 15-16 Mai 2008. Istanbul:, 2008, 10 - 10.
16. Zeltser, Maria (2007). Sequences of 0's and 1's: sequence spaces with the separable Hahn property . Studia Mathematica, 182, 87 - 98 .
17. Zeltser, Maria (2007). Topeltjadade summeerimise uurimismeetoditest. Andi Kivinukk; Gert Tamberg, Jan Willemson (Toim.). Eesti Matemaatika Selts. aastaraamat 2002-2003 (61 - 66).Eesti Matemaatika Selts
18. Boos, Johann; Leiger, Toivo; Zeltser, Maria (2006). The intersection of matrix domains including a given sequence space. The Houston Journal of Mathematics, 32(1), 205 - 225.
19. Zeltser, Maria (2003). Weak sequential completeness of β-duals of double sequence spaces. II. Journal of Analysis, 11, 1 - 22.
20. Boos, J.; Zeltser, M. (2003). Sequences of 0's and 1's classes of concrete 'big' Hahn spaces. Zeitschrift für Analysis und Ihre Anwendungen, 22(4), 819 - 842.
21. Zeltser, M. (2002). On conservative matrix methods for double sequence spaces. Acta Mathematica Hungarica, 95(3), 225 - 242.
22. Zeltser, M.; Boos, J.; Leiger, T. (2002). Sequences of 0's and 1's: new results via double sequence spaces. Journal of Mathematical Analysis and Applications, 275(2), 883 - 899.
23. Zeltser, Maria (2001). On conservative and coercive SM-methods. Proceedings of the Estonian Academy of Sciences. Physics. Mathematics, 50(no. 2), 76 - 85.
24. Zeltser, Maria (2001). Weak sequential completeness of β-duals of double sequence spaces. Analysis Mathematica, 27(3), 223 - 238.
25. Zeltser, Maria (2001). Investigation of double sequence spaces by soft and hard analytical methods. (Doktoritöö, Tartu Ülikool. Matemaatika-Informaatikateaduskond) Tartu: Tartu University Press
26. Zeltser, Maria (2000). Matrix transformations of double sequences. Acta et Commentationes Universitatis Tartuensis de Mathematica, 4, 39 - 51.
27. Zeltser, Maria (1998). The solid Topology in Double Sequence Spaces. Seminarberichte aus dem Fachbereich Mathematik (53 - 67). Hagen: FernUniversität
28. Zeltser, Maria (1998). Matrix Transformations Involving Analytic Double Seguence Spaces. Seminarberichte aus dem Fachbereich Mathematik (77 - 91). Hagen: FernUniversität.