Harm Bart

Harm Bart (born 5 August 1942) is a Dutch mathematician, economist, and Professor of Mathematics at the Erasmus University Rotterdam, particularly known for his work on "factorization problems for matrix and operator functions."

Biography Born in Enkhuizen, Bart started his study at the Vrije Universiteit in Amsterdam in 1960. Here he received his BA in Mathematics and Astronomy in 1964, his MA in Mathematics with a minor in Dogmatics in 1969, and his PhD in 1973 with the thesis "Meromorphic operator valued functions" under supervision of Rien Kaashoek. He has been elected Fellow of the Stieltjes Institute for Mathematics, and Fellow of the Tinbergen Institute.

Publications Bart authored and co-authored three books and over fifty articles. 1973. Meromorphic Operator Valued Functions. Vrije Universiteit, Amsterdam 1979. Minimal Factorization of Matrix and Operator Functions, Operator Theory: Advances and Applications, Vol. 1 With I. Gohberg and M.A. Kaashoek. Birkhauser Verlag 2008. Factorization of matrix and operator functions: The State Space Method (Operator Theory: Advances and Applications / Linear Operators and Linear Systems). With Israel Gohberg, Marinus A. Kaashoek and André C.M. Ran. Vol. 178. Springer.

Articles, a selection: Bart, Harm, and Seymour Goldberg. "Characterizations of almost periodic strongly continuous groups and semigroups." Mathematische Annalen 236.2 (1978): 105–116. Bart, H., Gohberg, I., Kaashoek, M. A., & Van Dooren, P. (1980). Factorizations of transfer functions. SIAM Journal on Control and Optimization, 18(6), 675–696. Bart, Harm, and H. Hoogland. "Complementary triangular forms of pairs of matrices, realizations with prescribed main matrices, and complete factorization of rational matrix functions." Linear Algebra and its Applications 103 (1988): 193–228.