[Turkmath:5365] Re: (no subject)

Mon Jan 10 08:55:17 UTC 2022

Dear All,
Since the internet connection with Kazakhstan could not be provided, Prof.
Kalmenov's presentation that was announced on 11 January 2022 at 13.00 in
our seminar series has been postponed to a later date, it is announced to
those who are interested.

*Prof. Dr. Allaberen Ashyralyev *
*Department of Mathematics, Bahcesehir University, 34353, Istanbul, Turkey*
*  and **Near East University, Lefkoşa(Nicosia), Mersin 10 Turkey*
*Peoples' Friendship University of Russia (RUDN University),** Ul Miklukho
Maklaya 6, Moscow 117198, Russian Federation *
*Institute of Mathematics and Mathematical Modelling, 050010, Almaty,
Kazakhstan*
*e-mail: allaberen.ashyralyev at eng.bau.edu.tr
<allaberen.ashyralyev at neu.edu.tr> and **aallaberen at gmail.com
<aallaberen at gmail.com>    *
*http://staff.neu.edu.tr/allaberen.ashyralyev/
<http://staff.neu.edu.tr/allaberen.ashyralyev/>*
https://content.sciendo.com/view/journals/ejaam/ejaam-overview.xml
*icaam-online.org <http://icaam-online.org>*

*https://www.genealogy.math.ndsu.nodak.edu/id.php?id=95872&fChrono=1
<https://www.genealogy.math.ndsu.nodak.edu/id.php?id=95872&fChrono=1>*

On Tue, 4 Jan 2022 at 11:01, Allaberen Ashyralyev <
Allaberen.Ashyralyev at listweb.bilkent.edu.tr> wrote:

> *Bahçeşehir University, Istanbul, Turkey*
>
> *Analysis & PDE Center, Ghent University, Ghent,  Belgium *
>
> *Institute Mathematics & Math. Modeling, Almaty, Kazakhstan*
>
>
> Seminar leaders: Prof. Allaberen Ashyralyev BAU, Istanbul), Prof. Michael
> Ruzhansky (GU,  Ghent),
>
> Prof. Makhmud Sadybekov (IMMM, Almaty)
>
>
> Date: Tuesday, January 11, 2022   Time: 13.00-14.00 (GMT+4, Istanbul) =
> 10.00-11.00 (Ghent) = 15.00-16.00 (Almaty)
>
> *Zoom link*: *https://us02web.zoom.us/j/6678270445?pwd=SFNmQUIvT0tRaH-*
> <https://us02web.zoom.us/j/6678270445?pwd=SFNmQUIvT0tRaHlDaVYrN3l5bzJVQT09>
> *lDaVYrN3l5bzJVQT09*
> <https://us02web.zoom.us/j/6678270445?pwd=SFNmQUIvT0tRaHlDaVYrN3l5bzJVQT09>*,
> Conference ID: *667 827 0445, *Access code: *1
>
>
>
> *Speaker:*
> *Prof. Dr. T.Sh. Kal’menov* Institute of Mathematics and Mathematical
> Modeling, Almaty, Kazakhstan *Title:* Hadamard's example and solvability
> of the mixed Cau chy problem for the multidimensional Gellerstedt equation
>
>
> *Abstract:* In the theory of partial differential equations, an example
> constructed by J. Hada- mard, which shows the instability of the solution
> of the Cauchy problem for the Laplace equa- tion with respect to small
> changes in the initial data, is of great importance. In the works of A.N.Tikhonov,
> V.Y.Arsenin, M.M.Lavrentiev and many subsequent papers, this problem is reduced
> to integral equations of the first kind by solving the Newton potential,
> various regu- larizations of the problem under consideration are given
> and its conditional correctness is established. In our previous work, a
> criterion for the strong solvability of the Cauchy problem for the
> Laplace equation was found by the spectral decomposition of the Laplace
> operator with a deviating argument.
>
> In this report, we consider a mixed Cauchy problem for two-dimensional and
> multidimen- sional degenerate Gellerstedst equations. Analogs of the
> Hadamard’s example are constructed and incorrectness of the solution of
> the Cauchy problem for the Gellerstedt equation in two- dimensional and
> multidimensional cases is established. The condition of strong solvability
> of the mixed Cauchy problem for the multidimensional Gellerstedt equation
> in a cylindrical do- main is found. The proof is based on the spectral
> properties of the Laplace operator and the properties of special
> functions.
>
>
> *Biography:*
>
> Tynysbek Kal’menov is a graduate of the Novosibirsk State University
> (1969), and a representative of the school of A.V. Bitsadze, the
> outstanding scientist, the corresponding member of the Academy of
> Sciences of the USSR. In 1972, he completed his postgraduate studies at the Institute
> of Mathematics of the Siberian Branch of the Academy of Sciences of the
> USSR. In 1983, he defended his doctoral thesis at Moscow State
> University. In 1989, he was elected as a corresponding member of the
> Academy of Sciences of the Kazakh SSR.
>
> Tynysbek Kal’menov worked at the Institute of Mathematics and Mechanics of
> the Academy of Sciences of the Kazakh SSR (1972-1985). From 1986 to 1991,
> he was the dean of the Faculty of Mathematics of Al-Farabi Kazakh State
> University. From 1991 to 1997, he was the rector of Kazakh Chemical-Technological
> University (Shymkent).
>
> From 2004 to 2019, Tynysbek Kal’menov was the General Director of the
> Institute of Mathematics and Mathematical Modeling, he made it one of the
> leading scientific centres in the country and the best research institute
> in Kazakhstan. Suffice it to say, that in terms of the number of
> scientific publications (2015-2018) in international rating journals
> indexed in the Web of Science, the Institute of Mathematics and
> Mathematical Modeling ranked fourth among all Kazakhstani organisations,
> behind only three large universities: Nazarbaev Univer sity, N Al-Farabi
> National University and L.N. Gumilyov Eurasian University.
>
> Since 2019, Tynysbek Kal’menov has been working as the head of the
> Department of Differential Equations of the Institute of Mathematics and
> Mathematical Modeling.
>
> In 2013, he was awarded the State Prize of the Republic of Kazakhstan in
> the field of science and technology for the series of works “To the
> theory of initial-boundary value problems for differential equations”.
>
> The main areas of scientific interests of Academician Tynysbek Kal’menov
> are differential equations, mathematical physics and operator theory. He
> has obtained fundamental scientific results, many of which led to the
> creation of new scientific directions in mathematics.
>
> Tynysbek Kal’menov has trained 11 doctors and more than 60 candidates of
> sciences and PhD, has founded a large scientific school on equations of
> mixed type and differential operators recognized all over the world. Many
> of his disciples are major independent scientists recog- nized in the
> world of mathematics.
>
> He has published over 150 scientific articles, most of which are published
> in international mathematical journals, including 14 articles published in
> “Doklady AN SSSR/ Doklady Math- ematics”. In the last 5 years alone
> (2016-2020), he has published more than 30 articles in scientific
> journals indexed in the Web of Science database. To date, Academician
> Tynysbek Kal’menov has a Hirsch index of 18 in the Web of Science and
> Scopus databases, which is the highest indicator among all Kazakhstan
> mathematicians.
>
>
>
> *Prof. Dr. Allaberen Ashyralyev *
> *Department of Mathematics, Bahcesehir University, 34353, Istanbul, Turkey*
> *  and **Near East University, Lefkoşa(Nicosia), Mersin 10 Turkey*
> *Peoples' Friendship University of Russia (RUDN University),** Ul
> Miklukho Maklaya 6, Moscow 117198, Russian Federation *
> *Institute of Mathematics and Mathematical Modelling, 050010, Almaty,
> Kazakhstan*
> *e-mail: allaberen.ashyralyev at eng.bau.edu.tr
> <allaberen.ashyralyev at neu.edu.tr> and **aallaberen at gmail.com
> <aallaberen at gmail.com>    *
> *http://staff.neu.edu.tr/allaberen.ashyralyev/
> <http://staff.neu.edu.tr/allaberen.ashyralyev/>*
> https://content.sciendo.com/view/journals/ejaam/ejaam-overview.xml
> *icaam-online.org <http://icaam-online.org>*
>
> *https://www.genealogy.math.ndsu.nodak.edu/id.php?id=95872&fChrono=1
> <https://www.genealogy.math.ndsu.nodak.edu/id.php?id=95872&fChrono=1>*
> _______________________________________________
> Turkmath mailing list
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> http://yunus.listweb.bilkent.edu.tr/cgi-bin/mailman/listinfo/turkmath
>
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