Boris Yakovlevich Bukreev

Boris Yakovlevich Bukreev Russian: Борис Яковлевич Букреев (6 September 1859 – 2 October 1962) was a Russian and Soviet mathematician who worked in the areas of complex functions and differential equations. He studied Fuchsian functions of rank zero. He was interested in projective and non-Euclidean geometry. He worked on differential invariants and parameters in the theory of surfaces, and also wrote many papers on the history of mathematics.

B.Y. Bukreev was born in L'gov, Kursk gubernia of Russian Empire in the family of a school teacher. His grandfather was also a school teacher. His early education was at home and later he attended a classical Gymnasium at Kursk. In 1878 Bukreev entered Kiev University that at the time was called the University of Saint Vladimir in Kiev. The university was founded in 1834 and had a very strong school of mathematics. In 1880 Bukreev was awarded a gold medal by the Faculty of Physics and Mathematics as the best student. In 1882 he got his first degree and remained at the university to continue his training. At that time he worked on Karl Weierstrass's theory of elliptic functions. This became a topic of his Master's thesis titled "On the expansion of transcendental function in partial fractions. After publishing his thesis Bukreev went abroad and took lectures of Karl Weierstrass, Lazarus Fuchs, and Leopold Kronecker in Berlin. Bukreev undertook research on Fuchsian functions under Fuchs' guidance, which he completed in 1888 and which became the basis of his doctoral thesis "On the Fuchsian functions of rank zero" defended in 1889.

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