Herman te Riele is a Dutch mathematician renowned for his contributions to number theory, particularly in the areas related to algorithms for number theory and the computation of mathematical constants. He is well-known for his work on the calculation of the digits of pi and other mathematical constants, as well as for his research on various topics within computational mathematics. Te Riele has also been involved in mathematical education and has contributed to the dissemination of knowledge in mathematics through various publications and teaching efforts.

Henryk Iwaniec is a prominent Polish mathematician known for his work in analytic number theory, particularly in areas such as the distribution of prime numbers, modular forms, and automorphic forms. He has made significant contributions to various problems in number theory, including the development of sieve methods and the study of L-functions. Iwaniec has also authored and co-authored several influential research papers and books on these subjects.

Henry John Stephen Smith was a prominent British mathematician known for his contributions to various fields, including number theory and algebra. He was born on April 13, 1826, and died on May 30, 1883. Smith is particularly noted for his work on the theory of quadratic forms and his development of what is now known as Smith's normal form for matrices. His contributions laid foundational work that has influenced subsequent developments in these areas of mathematics.

Henri Darmon is a French mathematician known for his work in number theory and arithmetic algebraic geometry. He has made significant contributions, particularly in areas related to modular forms, the theory of L-functions, and Diophantine equations. Darmon is also recognized for his research involving the arithmetic of elliptic curves and the connections between number theory and the theory of motives.

Henri Cohen is a prominent French mathematician known for his contributions to number theory, particularly in areas related to algebraic number theory, arithmetic geometry, and computational number theory. He has published extensively on topics such as the distribution of primes, modular forms, and the theory of elliptic curves. Cohen is also recognized for his work on algorithms in number theory, including those related to the computation of Class Field Theory and computational methods for handling arithmetic problems.

Hendrik Lenstra is a Dutch mathematician known for his contributions to number theory, algebraic geometry, and computational mathematics. He was born on February 6, 1950. Lenstra is particularly recognized for his work on algorithmic number theory and has developed important algorithms related to integer factorization and the theory of elliptic curves.

Hendrik Kloosterman is not widely known as a public figure or entity in popular culture or mainstream knowledge as of my last update in October 2023. It's possible that Hendrik Kloosterman could be a professional in a specific field, an academic, or a private individual who does not have significant public visibility. Could you provide more context or specify the area in which you are interested?

Helmut Maier is not a widely recognized figure in popular culture or history as of my last update in October 2023, and there may be multiple individuals with that name across various professions or fields. If you provide more context or specify a certain area (like sports, science, business, etc.

Helmut Hasse was a prominent German mathematician, well-known for his contributions to number theory, algebra, and algebraic geometry. He was born on March 25, 1898, and died on September 26, 1979. Hasse made significant advancements in the theory of algebraic numbers and is particularly recognized for the Hasse principle, which deals with the conditions under which a mathematical object has solutions in rational integers based on local conditions.

Helen G. Grundman is a notable figure, often mentioned in the context of education, scholarship, or contributions to specific fields. However, without more specific context, it’s difficult to determine which aspects of her work or accomplishments you are referencing.

Heini Halberstam was a notable mathematician, particularly recognized for his contributions to number theory and geometry. His work often focused on topics such as combinatorial geometry and additive number theory. Halberstam was also known for his collaborations and influence in the mathematical community, writing several important papers and having a lasting impact on the field.

Haruzo Hida is a prominent Japanese mathematician known for his work in number theory and algebraic geometry. He has made significant contributions to the field, particularly in relation to p-adic Hodge theory and the study of motives. Hida has worked extensively on the Hida theory of ordinary forms and modular forms, which are essential in understanding the connections between different areas of mathematics, such as representation theory and arithmetic geometry.

As of my last knowledge update in October 2023, Harry Vandiver doesn't seem to be a widely recognized figure in popular culture, history, or any specific field. It’s possible that he could be a fictional character, a lesser-known individual, or someone who has gained prominence after that date.

Harold Stark does not seem to be a widely recognized figure or entity in popular culture or history as of my last knowledge update in October 2023. It is possible that "Harold Stark" could refer to a private individual, a fictional character, or a name that has emerged more recently in media or literature.

Harold Edwards is an American mathematician known for his work in number theory, particularly in the areas related to elliptic curves and algebraic forms. He is also recognized for his contributions to the teaching and popularization of mathematics. One of his notable works is the book "Rational Points on Elliptic Curves," which he co-authored with Kenneth H. Rosen, providing insights into the arithmetic of elliptic curves.

Harold Davenport (1907–1969) was a prominent British mathematician known for his significant contributions to number theory and mathematical analysis. He is particularly well-known for his work in additive number theory, the theory of prime numbers, and various aspects of Diophantine equations. Some of his notable achievements include results related to the distribution of prime numbers and the formulation of Davenport's theorem in additive number theory.

Harald Helfgott is a notable mathematician known for his work in number theory and related fields. He is particularly recognized for contributions to problems related to additive number theory, including his proof of the "Dense Model Conjecture" and advancements in the theory of prime numbers. Helfgott's work has garnered attention for its impact on various mathematical domains and has helped to shed light on significant conjectures in mathematics.

Hans Riesel is known primarily as a German mathematician and computer scientist who made significant contributions to the fields of number theory and combinatorics. He is particularly noted for his work related to prime numbers and the development of algorithms for primality testing. In addition to his mathematical work, the name "Riesel" is also associated with Riesel numbers in number theory, which are related to certain types of integers defined by their relation to prime numbers.

Hans Peter Schlickewei is a mathematician known for his contributions to number theory and related fields. He has worked on various topics, including Diophantine approximation and transcendental number theory. Schlickewei has published several papers and has influenced research within these areas.

Hans Heilbronn (1904–1975) was a notable German-born mathematician known for his contributions to number theory and the field of mathematics during the 20th century. He is particularly recognized for his work related to analytic number theory and the distribution of prime numbers. Heilbronn's work has had a lasting impact in various areas of mathematics. Heilbronn was also involved in the development of the theory of Hardy and Littlewood concerning the distribution of prime numbers.