Jane Heffernan is not a widely recognized public figure in popular culture, literature, or history as of my last update in October 2023. It's possible that she could refer to a private individual or a lesser-known person in a specific field.

János Aczél was a Hungarian mathematician known for his contributions to various areas of mathematics, particularly in functional equations, fuzzy set theory, and decision theory. Born on February 21, 1925, in Budapest, he became a prominent figure in the mathematical community. His work on functional equations involved exploring how functions behave under certain conditions and constraints, which has applications across multiple fields.

János Kollár is a prominent mathematician known for his contributions to algebraic geometry, particularly in the study of varieties, and for his work on the minimal model program. He has made significant advances in the understanding of the geometry of algebraic varieties, particularly in connection with intersection theory and the classification of higher-dimensional varieties. Kollár is also recognized for his publications and textbooks, which are influential in the field of mathematics.

Jean Dieudonné (1906–1992) was a French mathematician known for his significant contributions to various areas of mathematics, particularly functional analysis, topology, and algebra. He was also a prominent figure in the development of the theory of distributions and was instrumental in the formalization of functional spaces. Dieudonné was associated with the Bourbaki group, a collective of mathematicians that sought to reformulate mathematics in a rigorous and abstract way, focusing on the structural aspects of mathematical theories.

As of my last update in October 2023, Jeb Willenbring is not a widely recognized public figure, and there might not be extensive information or notable references available about him.

"Jenny Nelson" can refer to different subjects depending on context. Here are a couple of possibilities: 1. **Literature**: Jenny Nelson is an author or character in various texts, but specifics would depend on the work in question. 2. **Academia**: Jenny Nelson could be a recognized name in academic circles, possibly a researcher or professor known for contributions in a specific field.

Jeffrey Townsend could refer to various individuals or entities, as it is a relatively common name. Without more context, it's difficult to provide a specific answer. If you are referring to a particular person, such as an academic, artist, or public figure, please provide additional details so I can assist you better.

Jeff Tallon is a physicist known for his work in the field of condensed matter physics, particularly in relation to high-temperature superconductivity. He has made significant contributions to the understanding of the properties of superconductors and has been actively involved in research regarding their mechanisms and applications. Tallon has published numerous scientific papers and has been affiliated with institutions in New Zealand, including the Industrial Research Limited (IRL) and later, as part of his academic career, Wellington's Victoria University.

Jennifer Doudna is an American biochemist best known for her pioneering work in the field of CRISPR (Clustered Regularly Interspaced Short Palindromic Repeats) gene-editing technology. She was born on February 19, 1964, and is a professor at the University of California, Berkeley.

As of my last knowledge update in October 2021, there is no widely-known individual by the name of Jeremy Whitlock in popular culture, politics, or other major fields. It's possible that he may be a private individual or that he has gained prominence after this date.

Joaquin Mazdak Luttinger, often referred to as J. M. Luttinger, is a theoretical physicist known for his significant contributions to condensed matter physics, particularly in the areas of quantum liquids and many-body theory. He is well-recognized for formulating the Luttinger model, which describes one-dimensional liquid systems and has important implications in the understanding of interacting fermions and the behavior of quantum systems in reduced dimensions.

Jim Berger is a prominent statistician known for his contributions to Bayesian statistics, decision theory, and various areas of statistical methodology. He has authored numerous research papers and books, significantly influencing how Bayesian methods are applied in statistical practice. Berger is also recognized for his role in developing educational materials and for his efforts in promoting the understanding of statistical principles. He has held academic positions at various institutions, including Duke University, where he has contributed to both research and teaching in statistics.

Johann Carl Vogel (1783-1865) was a German botanist known for his contributions to botany and plant taxonomy. He was particularly recognized for his work in the field of plant classification and morphology. Vogel conducted extensive studies on various plant species and contributed to the understanding of plant relationships and characteristics. His work is often referenced in botanical literature, and he is remembered for his role in advancing the science of botany during his time.

John Flavell Coales (1897–1974) was a British-born American psychiatrist and psychoanalyst known for his work in the field of child psychology and psychoanalysis. He was instrumental in developing frameworks for understanding childhood development and contributed significantly to the field during the mid-20th century. Coales's work often explored the complexities of human relationships, emotional development, and the impacts of family dynamics on psychological wellbeing.

John Kemp is a mathematician known for his contributions to the field, particularly in areas related to applied mathematics and optimization. His work may also touch on computational methods and mathematical modeling. However, specific details about his research, publications, and impact in the field may not be widely documented in mainstream mathematical literature.