French geometers

The term "French geometers" generally refers to mathematicians and geometers from France who have made significant contributions to the field of geometry. French geometers have historically played a crucial role in the development of various branches of mathematics, especially geometry. Prominent figures in the history of French geometry include: 1. **René Descartes** - Known for Cartesian geometry, which involves the use of coordinate systems to describe geometric shapes algebraically.

Ernest de Jonquières was a French politician and a notable figure in the early 20th century. He is particularly known for his role as a member of the French Senate. His political career included involvement in various legislative matters and contributions to discussions on key issues of his time.

François Labourie is a notable figure in the field of neuroscience and psychology, particularly known for his research focusing on cognitive processes and their underlying neural mechanisms. His work often explores topics related to memory, learning, and brain function. However, it's worth noting that there is no widely recognized figure named François Labourie that is universally known; he might have a more specific relevance in certain academic or professional circles.

Girard Desargues was a French mathematician and engineer who lived during the 17th century (1591–1661). He is best known for his work in projective geometry and is often regarded as one of the founders of this field. Desargues' most significant contribution is the formulation of what is now known as Desargues' theorem, which describes the relationship between two triangles located in perspective from a point.

Grégoire de Saint-Vincent (1584–1667) was a Belgian Jesuit mathematician and philosopher known for his work in the field of mathematics, particularly for his contributions to the study of conic sections and his efforts in developing what would later be known as integral calculus. One of his notable achievements was his book "Typus universalis" (1647), where he worked on the idea of areas and volumes through geometric methods.

Henri Brocard (1845–1922) was a French mathematician known for his contributions to number theory and various aspects of mathematics. He is perhaps best known for his work on Diophantine equations and for the Brocard sequence, which is a sequence of integers that arises in number theory. Additionally, he is remembered for his contributions to mathematical education and for promoting mathematics through his writings and lectures.

Jean Gaston Darboux was a prominent French mathematician known for his contributions in various areas of mathematics, particularly in geometry and calculus. He was born on August 14, 1842, and passed away on February 23, 1917. Darboux is particularly noted for his work in differential geometry and the theory of functions.

Jean Paul de Gua de Malves was a French mathematician known for his work in the field of geometry and for his contributions to the study of infinitesimal calculus. He was born in the late 17th century, around 1730, and passed away in 1788. Gua de Malves is best known for his developments in the area of differential geometry and for his work on the principles of mathematical analysis.

Joseph Diez Gergonne was a notable French mathematician, born on January 18, 1796, and died on April 18, 1879. He is primarily known for his contributions to projective geometry and mathematical notation. One of his significant achievements was his work in the field of combinatorial geometry, where he developed various geometrical theories and perspectives.

Mathieu Weill is a French mathematician known for his contributions to various fields within mathematics, including geometry and number theory. However, he may not be a widely recognized figure in popular mathematics literature.

Michel Chasles (1793–1880) was a French mathematician known for his contributions to geometry and projective geometry, as well as to the study of conics and other areas of mathematical analysis. He is best known for Chasles' theorem, which pertains to the relationship between geometrical figures and their transforms, particularly in projective geometry. Chasles was also involved in the study of the historical development of mathematics and contributed to various forms of mathematical communication.

Michèle Audin is a French mathematician known for her work in the fields of algebraic geometry, differential equations, and mathematical analysis. She has made significant contributions to various areas of mathematics, particularly in relation to the study of isoperimetric inequalities and the geometry of differential forms. In addition to her research, Audin is also noted for her role in promoting mathematics and engaging with the mathematical community.

Paul Jean Joseph Barbarin is not widely known in general discourse or literature. However, it’s possible you're referring to a specific individual or a topic related to someone with that name. If you meant Cardinal Philippe Barbarin, he is a French Roman Catholic cardinal who has been involved in various controversies and discussions around the church.

Paul Émile Appell was a French mathematician known for his contributions to various areas of mathematics, particularly in geometry and analysis. Born on 8 February 1855 and passing away on 7 January 1931, he is perhaps best known for his work in projective geometry and for his involvement in the development of mathematical education in France. In addition to his research contributions, Appell was also recognized for his role as an educator and in the promotion of mathematics as a discipline.

Pierre Wantzel (1814–1848) was a French mathematician best known for his work in geometry and, specifically, for his contributions to the field of classical constructibility problems. He is particularly famous for proving in 1837 that certain problems, such as squaring the circle, trisecting an angle, and doubling the cube, cannot be solved using only a compass and straightedge.

Pierre de Fermat (1601–1665) was a French lawyer and mathematician who is best known for his contributions to number theory and for Fermat's Last Theorem. Although he was not a professional mathematician and did not publish his work in the way that many of his contemporaries did, his insights and writings laid important groundwork for modern mathematics.

Victor Thébault is not a widely recognized figure in history or contemporary culture based on available information. However, it’s possible that he could be a person emerging in a specific field, or perhaps he is known in a particular region or community.

Émile Lemoine is a name associated with various individuals and roles, but one notable figure is Émile Lemoine (1816-1883), who was a French mathematician known for his work in the fields of geometry and algebra. In a broader context, Lemoine might refer to various subjects in academia, literature, or other fields, depending on the context.