# Sergo Episkoposian's Publications (Full profile)

### Paper

- On the existence of universal series by trigonometric system, Journal of Functional Analysis, 230, pp. 169-189, (2006)
- On the divergence of Greedy algorithms with respect to Walsh subsystems in L^1, Journal of Nonlinear Analysis Series A: Theory, Methods & Applications, 65, (2006)
- On the divergence of Greedy algorithms with respect to Walsh systems in L ^1, Mathematics in Higer School, [in russian], (3), (2005)
- On the representation of functions by series Walsh system, Mathematics in Higer School, [in russian], (4), (2005)
- Representation of functions in weighted spaces L_mu ^1 by trigonometric series, Mathematics in Higer School, [in russian], (3), pp. 35-45, (2004)
- On the existence of universal series by Walsh system, Izvestiya Natsionalnoi Akademii Nauk Armenii, English trans. in: Journal of Contemporary Mathematical Analysis, 38, (4), pp. 16-32, (2003)
- On the series by trigonometric system, Mathematics in Higer School, . [in russian], (1), pp. 36-43, (2003)
- Representation of functions in weighted spaces L_mu ^1 by trigonometric and Walsh series, Analysis Mathematica, 27, pp. 261-277, (2001)
- On the divergence of Fourier-Walsh series, Uch. Zapiski. , Yerevan State University, . [in russian], (2), pp. 19-23, (2000)
- On the series by Walsh system universal in weighted L_mu ^1 spaces, Izvestiya Natsionalnoi Akademii Nauk Armenii, English trans. in: Journal of Contemporary Mathematical Analysis, 34, (2), pp. 16-32, (1999)
- On universal trigonometric series in weighted spaces L_mu ^1, East Journal on Approximations, 5, (4), pp. 483-492, (1999)

### Conference Paper

- Existence of double Walsh series universal in weighted L_mu ^1[0,1]^2 spaces, HARMONIC ANALYSIS AND RELATED PROBLEMS, Zaros, Crete, Greece, (2006)
- The Walsh system as not a Quasi-Greedy basis for L^1[0,1], Approximation and Harmonic Analysis, Auckland, New Zealand, (2005)
- On the divergence of Fourier-Walsh series in L^1[E] metric, International Conference, HARMONIC ANALYSIS and APPROXIMATION III, Tsahkadzor, ARMENIA, (2005)
- Double Walsh series universal in weighted L_mu ^1[0,1]^2 spaces, International Conference on Harmonic Analysis and Ergodic Theory, USA, (2005)
- On the existence of universal series by trigonometric system, The 12th Saratov winter school, " Modern problems of the theory Functions and their application ", Saratov, Russia, (2004)
- On the divergence of Greedy algorithms with respect to Walsh system, The first international Workshop on Polynomial Orthogonality and Applications, Annaba, Algeria, (2004)
- On the universal series by trigonometric and Walsh systems in weighted spaces L_mu ^1, Seventh Int. Symposium on Orthogonal Polynomials, Special Functions and Applications, Copenhagen, Denmark, August, pp. 18-22,, (2003)
- On the series by Walsh system universal in weighted L_mu ^1[0,1] spaces, International Conference, Mathematics in Armenia, Advances and Perspectives, September 30 - October 7, Tsahkadzor, ARMENIA, (2003)
- On the systems is not Quasi-Greedy basis, Isaac International Conferensce, Yerevan, Armenia, (2002)
- On the multiplicatively completion of Walsh subsystem to quasibasis in L ^1[0,1], International Conference, HARMONIC ANALYSIS and APPROXIMATION II, Nor Amberd, Armenia, p. 17, (2001)
- On almost everywhere convergence of Fourier-Walsh series, Djrbashian Memorial Conference, Yerevan, Armenia, p. 19, (1998)
- On the convergence of Fourier-Walsh series, International Conference, HARMONIC ANALYSIS and APPROXIMATION, Nor Amberd, Armenia, p. 17, (1998)

### Submitted Paper

- On the divergence of Greedy algorithms with respect to generalized Walsh systems in L^1[0,1], Izvestiya Natsionalnoi Akademii Nauk Armenii, English trans. in: Journal of Contemporary Mathematical Analysis
- Universal series by trigonometric system in weighted L_mu ^1[0,1] spaces, [to appear], International Journal Mathematics and Mathematical Scianeses
- Existence of double Walsh series universal in weighted L_mu ^1[0,1]^2 spaces, [to appear], Advances in Mathematics