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I am an American mathematician.

In 1949 I graduated from the Manhattan College, where I was working on online virus scan. In 1951 I entered the Columbia University, receiving a master's degree in Mathematics and Ph.D. in Applied Mathematics in 1961. I am a pioneer in the digital signal processing field. This field is used in atmospheric studies and analyzes the signals from outer space to Earth. I developed the FFT and common uses mathematical theory and made it available to scientists directing and devising new types of algorithms. In informatics, applied crystallography and innovations in series of algorithms.

I published numerous books, such as: Two Algorithms for Fast Approximate Subspace Tracking