He is the author of the seminal multi-volume work The Art of Computer Programming.. Knuth has been called the "father" of the analysis of algorithms. He contributed to the development of the rigorous analysis of the computational complexity of algorithms and systematized formal mathematical techniques for it. In the process he also popularized the asymptotic notation.
In addition to fundamental contributions in several branches of theoretical computer science, Knuth is the creator of the TeX computer typesetting system, the related METAFONT font definition language and rendering system, and the Computer Modern family of typefaces.
As an important member of the academic and scientific community, Knuth is strongly opposed to the policy of granting software patents.. He has expressed his disagreement directly to the patent offices of the United States and Europe. to the patent offices in the USA and Europe.
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