As of my last knowledge update in October 2023, there is no widely recognized figure or entity named Charles Hellaby that appears in historical, literary, or notable current events contexts. It's possible that Charles Hellaby could refer to a private individual or a less well-known subject.

Mamokgethi Phakeng is a prominent South African academic and administrator recognized for her contributions to higher education, particularly in the fields of mathematics education and university leadership. She has served as the Vice-Chancellor of the University of Cape Town (UCT), making her the first black woman to hold this position in the university's history. Known for her advocacy of diversity and inclusion within academia, Phakeng has been influential in promoting access to quality education for underrepresented groups in South Africa.

Alexander Novikov is a prominent Russian mathematician known for his contributions to topology, differential geometry, and mathematical physics. Born on April 3, 1935, he has made significant advancements in various fields, particularly in the area of geometric topology and the theory of manifolds. Novikov is particularly known for developing the Novikov conjecture, which relates to the signature and surgery theory in topology.

Alexey Ivakhnenko is a prominent Russian scientist and engineer known for his significant contributions to the fields of cybernetics, artificial intelligence, and systems theory. He is particularly recognized for developing the "Ivakhnenko polynomial" approach and for his work on "group method of data handling" (GMDH), a method that combines modeling and learning algorithms for data analysis and prediction.

Anatoly Libgober is a mathematician known for his work in the fields of algebraic geometry and topology. He has made significant contributions to various areas, including the study of algebraic curves, singularities, and the theory of algebraic varieties. Libgober has also been involved in research related to the topology of algebraic varieties and their geometric properties. He has published numerous papers and has been involved in teaching and mentoring students in mathematics.

As of my last knowledge update in October 2021, there is no widely recognized person or entity named Anry Nersessian. It’s possible that this name could refer to a private individual, a lesser-known figure, or an emerging personality in various fields.

Boris Bukreev is likely a misspelling or confusion with the name of Anatoli Boukreev, a notable Russian-born mountaineer. Anatoli Boukreev is known for his significant contributions to high-altitude climbing, particularly in the Himalayas. He gained attention for his role during the 1996 Mount Everest disaster, where he assisted in rescuing climbers during severe weather conditions.

Boris Feigin is a mathematician known for his work in areas such as representation theory and algebra. He has made contributions to the field, particularly concerning certain algebraic structures and their applications in mathematical physics. Feigin is also associated with the study of vertex operator algebras and other areas related to mathematical fields like algebraic geometry and mathematical physics.

Georgii Suvorov is a prominent Russian mathematician noted for his contributions in various areas of mathematics, particularly in the fields of functional analysis and operator theory. His work has had a significant impact on both theoretical mathematics and its applications. However, without more specific context or details about your inquiry, it is difficult to provide a deeper or more detailed answer.

As of my last knowledge update in October 2023, Linards Reiziņš is a Latvian professional basketball player. He has played for various teams in the Latvian basketball league and has also been involved in international competitions.

Nikita Moiseyev may refer to a specific individual, but there isn't well-known information or significant public figures by that name as of my last update in October 2023. It's possible that he could be a private individual, a lesser-known personality, or a figure in a niche field not widely covered in popular media.

The KT88 is a type of power vacuum tube (or valve) that is commonly used in high-fidelity audio amplifiers and guitar amplifiers. It was originally developed in the late 1950s by the British company GEC (General Electric Co.) and is part of the "KT" family of tubes, where "KT" stands for "Kinkless Tetrode.

Bigha is a traditional unit of land measurement commonly used in various South Asian countries, including India, Nepal, and Bangladesh. The size of a bigha can vary significantly from one region to another. In India, for instance, a bigha typically ranges from about 1,500 to 6,000 square meters, but the specific area can depend on the state. In some regions, one bigha might be considered equivalent to approximately 0.

Tord Ganelius is a Swedish YouTuber and content creator known for his vlogs, challenges, and gaming videos. He has gained popularity for his engaging personality and entertaining content, often sharing aspects of his life and interests with his audience.

Toshmuhammad Qori-Niyoziy, also known as Toshmuhammad Niyazi, was a prominent figure in the history of Uzbekistan, particularly known for his contributions to education and literature. He was born in 1910 in the Niyaz village of Uzbekistan and became well-known for his poetry in the Uzbek language, where he explored themes related to social issues, nature, and the human experience.

Valentin Belousov could refer to a number of individuals, as the name is not uniquely identifiable. However, one notable mention could be Valentin Belousov, a notable Russian scientist known for his work in the field of chemistry and reaction dynamics, particularly the Belousov-Zhabotinsky reaction, a classic example of a non-equilibrium thermodynamic reaction that displays oscillating behavior.

Vasily Sergeevich Nemchinov is not a widely recognized figure in popular culture or history as of my last knowledge update in October 2023. If he is a less prominent figure or has gained relevance in a specific context after that date, I may not have information about him.

Yurii Reshetnyak is a notable figure in the field of mathematics, particularly known for his contributions to various branches such as the theory of function spaces, approximation theory, and mathematical analysis. He is recognized for his work on the Reshetnyak theorem and various other contributions that have implications in both pure and applied mathematics.

Spanish geodesists are professionals who specialize in the field of geodesy in Spain. Geodesy is the science of measuring and understanding Earth's geometric shape, orientation in space, and gravitational field. Geodesists work on various applications, including land surveying, mapping, navigation, and modeling the Earth’s surface and its changes over time. In Spain, geodesists may be involved in various projects related to cartography, environmental monitoring, urban planning, and infrastructure development.

Nalin de Silva is a controversial figure from Sri Lanka, known for his work in geology, and he is also a political commentator. He has been associated with various discussions in the fields of education, environmental science, and national identity. Dr. de Silva is particularly noted for his criticism of certain educational theories and practices in Sri Lanka, advocating for a nationalistic approach to education that reflects Sri Lankan culture and values.