Mstislav Keldysh, born on February 2, 1911, and passed away on December 24, 1998, was a prominent Soviet mathematician and a significant figure in the fields of mathematics and applied mathematics. He contributed to various areas, including differential equations, numerical analysis, and mathematical physics.

Nadeschda Gernet is known as a prominent figure in the fields of linguistics and cognitive science, particularly in the context of Russian linguistics. She may also be associated with various academic and research contributions.

Naum Krasner is a prominent figure in contemporary art, known for his contributions to abstract expressionism and his exploration of color and form. He may be less well-known than some of his contemporaries, but he has made significant contributions to the art world throughout his career.

Nikolai Kapitonovich Nikolski was a prominent Soviet and Russian mathematician known for his contributions to various fields, including analysis, function theory, and complex analysis. Born on April 29, 1898, and passing away on October 20, 1979, Nikolski's work particularly focused on topics such as approximation theory, operator theory, and the study of analytic functions.

As of my last knowledge update in October 2021, Sergei Starchenko is not a widely recognized figure in popular culture, science, or history. It's possible that he may be a private individual, a less-known professional, or has gained recognition after that time.

As of my last knowledge update in October 2023, Sergey Chesnokov does not appear to be a widely recognized public figure, historical figure, or significant entity in popular culture. It’s possible that he could be a private individual, a professional in a specific field, or a name that has gained prominence after my last update.

Sergey Yablonsky is a name that may refer to various individuals or contexts, but it is most commonly associated with a notable figure in the field of music and specifically classical guitar. He is known for his work as a guitarist, composer, and educator. However, without more specific context, it is challenging to provide precise information.

As of my last update in October 2023, there is no widely known individual by the name Numan Yunusovich Satimov in public records, literature, or notable events. It's possible that he might be a private individual or has emerged in news or social contexts after that time.

As of my last update in October 2023, there isn't any widely known or notable figure, concept, or entity named "Oleg Tozoni." It's possible that he could be a private individual or involved in a niche area that hasn't gained significant public attention.

Orymbek Zhautykov, often referred to in the context of his contributions to mathematics, stalwartly distinguished himself as a mathematician from Kazakhstan. His work significantly impacted various mathematical disciplines, and he is recognized for his efforts in promoting mathematics education and research in Kazakhstan and beyond. Zhautykov was notably affiliated with institutions in Kazakhstan, where he actively contributed to the development of mathematical science and education.

Otto Schmidt could refer to different subjects depending on the context: 1. **Otto Schmidt (Mathematician)**: A notable mathematician and physicist recognized for contributions in various fields. He may be known primarily in academic circles. 2. **Otto Schmidt (Political Figure)**: There could be various historical or political figures by this name, particularly in German or Russian contexts.

Semyon Aranovich Gershgorin (also spelled Gershgorin) was a Soviet mathematician known for his work in the field of linear algebra and matrix theory. He is perhaps best known for the Gershgorin Circle Theorem, which provides a method to locate the eigenvalues of a matrix.

Sergei N. Artemov is a prominent figure in the field of mathematical logic and computer science, particularly known for his contributions to proof theory and constructive mathematics. He has made significant strides in areas such as formal logic, epistemic logic, and the foundational aspects of mathematics. Additionally, Artemov has worked on topics relating to automated theorem proving and the interplay between formal systems and computational applications.

Tanya Khovanova is a mathematician known for her work in combinatorics, mathematical education, and outreach. She has made significant contributions to the field, particularly in areas such as graph theory and combinatorial games. Khovanova is also recognized for her efforts in promoting mathematics through various educational initiatives and has been involved in organizing mathematics competitions. In addition to her research, she is known for her engaging teaching style and her passion for inspiring students to appreciate and excel in mathematics.

Tatyana Velikanova is a prominent figure in the field of education, particularly recognized for her work in developing innovative teaching methodologies. She has made significant contributions to pedagogical practices, promoting the use of technology and interactive learning approaches in the classroom. Her work often focuses on enhancing student engagement and improving educational outcomes.

Stefan Cohn-Vossen (1902–1936) was a notable German mathematician known for his contributions to differential geometry and topology. He is best remembered for his work on the theory of surfaces, particularly in relation to minimal surfaces and the geometry of curves and surfaces. Cohn-Vossen collaborated with other prominent mathematicians, including David Hilbert, and his insights have had a lasting impact on the fields of mathematics and geometry.

Viktor Vladimirovich Nemytskii is a notable mathematician recognized for his contributions to the fields of differential equations, dynamical systems, and mathematical analysis. He is particularly known for the Nemytskii operator (or Nemytskii's mapping), which is a concept in functional analysis and is used to describe how functions can be transformed or mapped in different mathematical contexts.

As of my last knowledge update in October 2021, there is no widely known public figure or notable entity named Vitalii Ditkin. It is possible that he could be a private individual or someone who has gained prominence after that date. If you have more context or specific details about him, I would be glad to help!

Vladimir A. Zorich is a noted mathematician primarily known for his work in the fields of mathematics and mathematical education. He is particularly recognized for his contributions to mathematical analysis, differential equations, and mathematical modeling. Zorich has also authored textbooks and research papers that address various topics within mathematics, including the teaching methods in higher education.

Toshmuhammad Sarimsoqov, often referred to as Toshmuhammad, is a notable figure in Uzbekistan, primarily recognized for his contributions to politics and public administration. He has served in various governmental roles and is known for his involvement in promoting development and reform within the region. However, specific details about his political career or notable achievements may vary, and further context about the time period or specific events might be necessary to provide more comprehensive information.