Frank Quinn is an American mathematician known for his work in the fields of topology and geometry. He has made significant contributions to the study of manifolds and low-dimensional topology, particularly in understanding the structures of three-dimensional spaces. Quinn is also recognized for his involvement in mathematical education and outreach, and he has published several papers and works that help advance the understanding of complex mathematical concepts.

Greg Kuperberg is a mathematician known for his work in various areas of mathematics, including geometry, combinatorics, and quantum topology. He has made significant contributions to the understanding of mathematical objects such as knots and representations of quantum groups. He is also recognized for his work on the Kuperberg families of knot invariants, which relate to the study of 3-manifolds and their properties. Additionally, Kuperberg has been involved in mathematical outreach and education.

Heiner Zieschang is a notable figure in the field of mathematics, specifically known for his contributions to topology and mathematical logic. His work has had a significant impact on areas such as set theory and algebra, often intersecting with various aspects of mathematical theory.

John Hempel could refer to various individuals, but without specific context, it's difficult to determine which one you mean. If you're referring to someone notable in a particular field (such as science, sports, politics, etc.), please provide more details so I can assist you better. If it's a fictional character or a lesser-known individual, additional context would also be helpful.

Ivan Smith is a mathematician known for his work in the field of mathematics, particularly in geometry and topology. He has made contributions to areas such as minimal surfaces and related fields. He is affiliated with various academic institutions and has published numerous papers in mathematical journals. His research often involves complex mathematical concepts and has implications in both theoretical and applied mathematics.

Jeffrey Weeks is a mathematician known for his work in the fields of topology and geometry, particularly in the study of three-dimensional manifolds. He is well-regarded for his contributions to the understanding of hyperbolic 3-manifolds and for his development of software tools for mathematical visualization, such as SnapPea, a program used for studying hyperbolic structures on 3-manifolds.

Jun-iti Nagata is a prominent Japanese mathematician known for his contributions to the fields of topology and algebra. He was born on June 23, 1935, and has made significant advancements in the study of topological spaces and homological algebra. Nagata is particularly well-known for his work on the theory of projective spaces and for introducing what is now known as the "Nagata topology.

Mary Wynne Warner is not widely recognized in public domain sources, and there may be multiple individuals with that name. If you are referring to a specific person, organization, or concept related to Mary Wynne Warner, could you please provide more context or details? This would help in providing a more accurate and relevant response.

Kazimierz Kuratowski (1896–1980) was a Polish mathematician known for his significant contributions to topology, set theory, and the foundations of mathematics. He is particularly recognized for his work in point-set topology, where he introduced the Kuratowski closure-complement axioms, which relate to the concepts of closure and interior in a topological space. He also made important contributions to the theory of metric spaces and the study of continuous functions.

Lê Dũng Tráng is an individual known for being a prominent Vietnamese entrepreneur and influential figure in the technology sector, particularly in fields related to software development and internet services. He has made significant contributions to the growth of various tech startups in Vietnam. However, there may be numerous people with similar names, and the context is essential to provide a specific answer.

Martin Scharlemann is an American mathematician known for his work in topology, particularly in the areas of low-dimensional topology and knot theory. He has made significant contributions to the understanding of 3-manifolds and has worked on various aspects related to Heegaard splittings and the topology of surfaces.

Morris Hirsch is a mathematician known for his significant contributions to various areas of mathematics, particularly in the field of topology and differential equations. He is one of the co-authors of the influential textbook "Differential Topology," which provides foundational insights into differential topology concepts. Hirsch's work often involves the application of topological methods to problems in mathematics and theoretical physics. He has also been involved in various aspects of mathematical education and research throughout his career.

Peter Orlik is a mathematician known for his contributions to the field of topology and specifically to knot theory. He has published numerous papers and has worked on various mathematical problems related to these areas.

Peter Hilton could refer to a few different individuals, depending on the context. One prominent figure by that name was a British mathematician known for his contributions to topology and combinatorial mathematics. He was an influential educator and had a notable career at various institutions, including the University of California, Santa Cruz. Additionally, there may be other people named Peter Hilton in different fields, including business or the arts.

Rachel Roberts is a mathematician known for her work in the field of mathematics, particularly in the areas of algebra and combinatorics. She has contributed to several mathematical topics, including research on combinatorial structures and their applications. In addition to her research, she is involved in mathematics education and advocacy, aiming to promote mathematical understanding and engagement among students.

Ralph Louis Cohen is a notable figure primarily known for his contributions to the fields of mathematics and statistics. He has made significant research contributions, particularly in areas such as statistical modeling and analysis. In addition to his academic work, he may hold positions at educational institutions, contributing to research and teaching in his areas of expertise.

Raymond Louis Wilder (1896–1982) was a prominent American mathematician known for his contributions to topology, especially in the areas of geometric topology and homotopy theory. He is perhaps best known for his work related to the theory of fiber bundles and for Wilder's theorem in topology. Additionally, he was influential in mathematics education, particularly in the development of innovative teaching methods and curriculum improvements.

Gert Hauske is a name that may refer to individuals known in various fields, but it might not have widespread recognition in mainstream media.

Robert Riley is a mathematician known for his contributions to the field of mathematics, particularly in areas such as number theory and mathematical education. While detailed, widely accessible information about him may be limited, his work and research may include publications, lectures, or contributions to mathematical organizations and education.