[ Teaching 
Research Areas  Publications 
Student's Corner ]
I got my M. S. in Mathematics from University of Tashkent (now it is National
University of Uzbekistan). Both my Ph. D. and D. Sc. in mathematical statistics
are from Leningrad (now St. Petersburg) State University.
In 1965 – 1988 I was a senior researcher at the Leningrad Branch of Steklov
Mathematical Institute (known by its Russian acronym LOMI), Russian Academy of
Sciences.
Since April 1, 1988 I have been with Department of Mathematics (Statistics
Program), University of Maryland.
My hobby since the high school was playing chess. As a high school student, I
played in many official tournaments in the former Soviet Union. After a few
decades break, I played in a few tournaments in the United States. My official
US Chess federation rating is 2111 in regular chess and 2283 in speed chess.
However, I have not played recently in tournaments so that my actual rating is
probably lower. My other hobbies are swimming all the year around and downhill
skiing in winter. My fervent desire is seeing my grandchildren (now aged 18, 16, 12 and
9) enjoying mountainskiing, swimming and playing soccer.
Teaching
Spring 2019
Research Areas

Parameter Estimation
 Fisher Information
 Characterization
Problems
 Sufficiency and Exponential Families
 Generalized
Linear Models
Publications

2016
On the structure of UMVUEs (with Ya. Malinovsky). Sankhya, Ser. A, 78 ( 2016), 124132

2015
An analytic generalization of independence and identical distributiveness (with G. Szekely). Stat. Probab. Letters (2015), 710

2014
i. Partially complete sufficient statistics are jointly complete
(with Ya. Malinovsky and L. Mattner). Theory Probab. Appl.,59, 3 (2014), 542561.

2013
i. On the Nile problem by Sir Ronald Fisher (with Ya. Malinovsky).Electronic J.
Statistics, 7 (2013), 19681982.
ii. Monotonicity in the sample size of the length of classical confidence intervals
(with Ya. Malinovsky). Stat. Probab. Letters, 83 (2013), 7882.

2012
i. Contribution to the theory of Pitman estimators (with T. Yu, A. Barron, and M. Madiman).
Zapiski Nauchnukh Seminarov PDMI, 408 (2012), 245267. (reprinted in J. Math. Sci., 199 (2014), 202214).

2010
i. A class of multivariate distributions related to distributions with a Gaussian component (with L. Klebanov).
IMS Collections, 7 (2010), 105112.

2009
i. Geometric properties of the sample mean and vector of residuals (with T. Yu) .
Statist. Probab. Letters, 79(2009), 14091413.

2008
i. An identity for the Fisher information and Mahalanobis distance (with Bing Li) .
J. Statist. Plan. Inference, 138 (2008), 3950–3959.
ii. Bivariate distributions with Gaussianlike dependence structure (with S. BarLev).
Comm. Statistics – Theory and Methods, 38 (2008), 26692676
iii. Some inequalities related to the Stam inequality (with T. Yu).
J. Math. Analysis, 53(2008), 195205.

2007
i. Sub and superadditivity a la Carlen of matrices related to the Fisher
information (with Z. Landsman and C. R. Rao). J. Statist. Planning and
Inference, 137, 291298.
ii. A lemma on stochastic majorization and properties of the Student
distribution (with A. V. Nagaev). Theory Probab. Applications, 52, no. 1.
iii. Strong decomposition of random variables (with J. Hoffman –Jorgensen, L. Pitt and L. Shepp)
J. Theoret. Probab.

2006
i. Quasiindependence of random variables and a property of normal and gamma
distributions. J. Statist. Planning and Inference, 136, 199208.
ii. Profile sufficiency . Austrian J. Statistics, 35, 121130.

2005
i. A sufficiency paradox: an insufficient statistic preserving the Fisher
information (with L. Shepp). American Statistician, 59, No. 1.
ii. On estimation of a location parameter in presence of an ancillary component
(with C. R. Rao). Theory Probab. and Its Applications, 50, 172176.
iii. The structure of the UMVUEs from categorical data (with M. Konikov). Theory
Probab. and Its Applications, 50, No. 3.

2004
i. On the maximum correlation coefficient (with W. Bryc and A. Dembo). Theory
Probab. and Its Applications, 49, 191197.

2003
i. Some properties and applications of the efficient Fisher score (with C. R.
Rao). J. Statist. Planning and Inference, 116, 343352.
ii. Statistical approach to some mathematical problems. Austrian J. of
Statistics, 32, 7183.

2002
i. Sufficiency and ancillarity in characterization problems. J. Statist.
Planning and Inference, 102, 223228.
ii. Transfer theorems in exponential families. Statist. and Probab. Letters,
57, 225228.
iii. An inequality for the Pitman estimators related to the Stam inequality.
Sankhya .A64, 282292

2001
i. A discrete version of the Stam inequality and a characterization of the
Poisson distribution. J. Statist. Planning and Inference, 92, 712.
ii. A property of linear forms of independent random variables related to
uniqueness of linear structure (with R.G. Laha). J. Statist. Planning and
Inference, 92, 1320.
iii. Multivariate normal distributions, Fisher information and matrix
inequalities (with P. J. Smith). Internat. J. of Mathem. Education in Science
and Technology, 32, 9196.
iv. A note on the logistic link function. Biometrika, 88, 599601.
v. Remarks on the maximum correlation coefficient (with A. Dembo and L. Shepp).
Bernoulli, 7, 343350.
vi. Another look at the CramerRao inequality. American Statistician, 55,
211212. vii. How many moments can be estimated from a large sample? (with S.
Nagaev). Statist. and Probab. Letters, 55, 99105.

2000
i. An extension of DarmoisSkitovich theorem to a class of dependent random
variables (with J. Wesolowski). Statist. and Probab. Letters, 47, 6973

1999
i. Symmetrization of binary random variables (with C. Mallows, L. Shepp, R.
Vanderbei, and Y. Vardi). Bernoulli, 5, 10131020.
ii. Relation between the covariance and Fisher information matrices (with Z.
Landsman). Statist. and Probab. Letters, 42, 713.
iii. Characterization of the Weibull distribution by properties of the Fisher
information under type I censoring (with I. Gertsbakh). Statist. and Probab.
Letters, 42, 99105.
iv. Characterization of the normal distribution through the power of a oneway
ANOVA (with G. Letac). J. Statist. Planning and Inference, 77, 19.
v. Tail hypotheses in the signal plus noise model (with L. Shepp). Statist. and
Probab. Letters, 43, 317319.

1998
i. Some linear models are necessarily parametric (with L. Shepp). Statist. and
Probab. Letters, 37, 7780.
ii. Why the variance? (with L Shepp). Statist. and Probab. Letters
iii. A stronger version of matrix convexity as applied to functions of
Hermitian matrices (with P.J. Smith). J. of Inequalities and Applications

1997
i. Statistical meaning of Carlen's superadditivity of the Fisher information
(with Z. Landsman). Statist. and Probab. Letters, 32, 175179.
ii. A class of polynomials with an invariance property (with V. Rohatgi). .J.
Statist. Planning and Inference, 63, 215222.
iii. Independence of the sum and absolute difference of independent random
variables does not imply their normality (with R. G. Laha and V. Rohatgi).
Mathem. Methods of Statist., 6, 263265.

1996
i. Normality via conditional normality of linear forms (with J. Wesolowski).
Statist. and Probab. Letters, 29, 229232
In University
Statistics Seminar Organizer, 2010  2015.
In Math Community
Coorganizer of the 5th Lukacs Symposium in Probability and Statistics (Bowling
Green, Spring 1995)
Coorganizer of Special Session of the Amer. Math. Soc. Regional Meeting
(College Park, Spring 1997)
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