Henri Poincaré

Jules-Henri Poincaré (April 29, 1854 - July 17, 1912) is considered by many to have been one of France's greatest theoretical scientists. He made important original fundamental contributions to mathematics, mathematical physics, and celestial mechanics.

Among the specific topics he contributed to are the following:

• algebraic topology
• the theory of analytic functions of several complex variables[?]
• the theory of abelian functions[?]
• algebraic geometry
• number theory
• the three-body problem
• the theory of diophantine equations
• the theory of electromagnetism
• the special theory of relativity

He is responsible for one of the most famous problems in Mathematics, which is known as the Poincaré Conjecture which is a topology problem.

He published two major works that placed celestial mechanics on a rigorous mathematical basis:

• "New Methods of Celestial Mechanics"
• "Lessons of Celestial Mechanics".

In popular writings he helped establish the fundamental popular definitions and perceptions of science by these writings:

• Science and Hypothesis, 1901.
• The Value of Science, 1904.
• Science and Method, 1908.