Robert "Bob" Stephen Strichartz (October 14, 1943 – December 19, 2021) was an American mathematician who specialized in mathematical analysis. Strichartz's first academic position was at MIT. From 1967 to 1969, he was a C.L.E. Moore Instructor at Massachusetts Institute of Technology.He then joined the Department of Mathematics at Cornell University, where he taught for more than 50 years. He was appointed assistant professor of mathematics at Cornell in 1969, associate professor in 1971, and full professor in 1977. Strichartz worked on harmonic analysis (including wavelets and analysis on Lie groups and manifolds), partial differential equations, Integral geometry and analysis on fractals. Strichartz estimates are named after him due to his application of such estimates to harmonic analysis on homogeneous and nonhomogeneous linear dispersive and wave equations; his work was subsequently generalized to nonlinear wave equations by Terence Tao and others. He is also known for his analysis on fractals, building upon the work of Jun Kigami on the construction of a Laplacian operator on fractals such as the Sierpinski–Menger sponge. [Source: Wikipedia]