György Hajós could refer to a prominent Hungarian figure, known primarily for his contributions in a specific field. However, without context, it’s challenging to pinpoint exactly which György Hajós you are referring to, as there may be multiple notable individuals with that name. One well-known György Hajós (born in 1944) is a Hungarian architect and academic, recognized for his work in architecture and urban planning.

In the context of chemistry and crystallography, a point group is a set of symmetry operations that describe the symmetrical properties of a particular molecule or crystal structure. These operations include rotations, reflections, and inversions that leave at least one point (usually the center of the molecule or crystal) unchanged.

Helge von Koch is known for his contributions to mathematics, particularly in the field of analysis and geometry. He is best recognized for the Koch snowflake, a famous fractal curve that is constructed by repeatedly adding smaller equilateral triangles to the sides of an initial equilateral triangle. This geometric figure is notable for having an infinite perimeter while enclosing a finite area, exemplifying concepts of infinity in a tangible way.

Hilary Priestley is a notable figure in the field of mathematics, particularly known for her work in probability theory and stochastic processes. She has made significant contributions to the understanding of stochastic ordering and decision theory. Priestley has authored various academic papers and has also been involved in teaching and mentorship in mathematics.

Jessie Marie Jacobs is not widely known in public or historical records, so it's possible that she could be a private individual or a notable figure in a niche context. If you have more specific information or context about what you're looking for regarding Jessie Marie Jacobs, I would be happy to help further. It could relate to literature, arts, or perhaps a local figure or event. Please provide more details!

Jim Coykendall is a notable figure in the field of educational technology and instructional design. He is known for his contributions to the development of online education and training programs. Coykendall has worked on various initiatives to enhance learning experiences through the use of technology.

Hyman Bass is an American mathematician known for his contributions to algebra, particularly in the areas of algebraic topology, homological algebra, and representation theory. He is well-known for his work on group cohomology and other topics that bridge algebra and topology. Bass has also been involved in mathematical education and has advocated for improving math education at various levels.

Ibn al-Banna' al-Marrakushi (also known simply as Ibn al-Banna) was a prominent Islamic scholar, mathematician, and astronomer from Morocco who lived during the 14th century, specifically around the years 1256 to 1321. He is best known for his contributions to mathematics, particularly in algebra, and for his work in astronomy.

Idun Reiten is a Norwegian mathematician known for her work in the field of representation theory and algebra. Her contributions have been significant in areas such as homological algebra and the theory of modules. She is recognized for her research on abelian categories and their applications, as well as for her work on theoretical and computational aspects of algebra. Reiten has also been involved in mentoring and promoting mathematics, particularly in encouraging women in the field.

"Ina Kersten" does not appear to correspond to any widely recognized term, concept, or notable individual based on the information available up to October 2023. It's possible that it could be a person's name, a character in a specific context, or a reference that has come to prominence after my last update.

Irena Peeva is not a widely recognized public figure as of my last update in October 2023, and there may not be significant publicly available information about her. If she has gained prominence or relevance in a specific field or context after that time, I may not have the latest details.

Irvin Cohen could refer to various individuals, but without additional context, it's challenging to provide a specific answer. It could pertain to a notable figure in a particular field, such as business, academia, or the arts.

Irving Kaplansky (1917–2019) was a prominent American mathematician known for his significant contributions to various areas of mathematics, particularly in algebra and functional analysis. He made notable advancements in the fields of ring theory, group theory, and the theory of algebras. Kaplansky was also influential in the development of topology and was known for his work on operator algebras and the structure of groups.