Boris Delaunay was a Russian mathematician born in 1885, known for his contributions to geometry and number theory. He is best recognized for the Delaunay triangulation, a method used in computational geometry to divide a space into triangles, which has applications in computer graphics, geographic information systems, and mesh generation. Delaunay's work extended beyond triangulation; he also studied Voronoi diagrams, which are closely related to his triangulation method. His research has had a lasting impact on various fields, including robotics, geography, and computer science, making him a significant figure in the development of modern mathematics.