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By Israel Gohberg, Moshe Livšic and Ilya Piatetski-Shapiro; the credited names are I. Gohberg, M. S. Livšic and I. Piatetski-Shapiro. Integral Equations and Operator Theory, volume 9, pp. ii–7, January 1986. The years 1912–1982 in the title are David Milman’s life years.

University-hosted memoir: www.math.tau.ac.il/images/stories/documents/david_milman.pdf

Publisher metadata: link.springer.com/article/10.1007/BF01257057

DOI: doi.org/10.1007/BF01257057

Tel Aviv University hosts this copy; the journal is the publication venue. Main inspected the first journal page and running headers; the publisher independently confirms the title, credits, pagination and issue date.

Cited historical passage: printed p. 4, the 1940 publication with M. G. Krein, citing the original paper as reference 3. This hosted excerpt contains a cover and printed pp. 1–7, but no full reference list. This memoir is used for publication history; its stated theorem hypotheses are not treated as the most general modern formulation.

Israel Gohberg was a mathematician working in functional analysis, operator theory and matrix methods. His research and collaborations linked abstract properties of linear operators with concrete integral equations and matrices. He also founded the journal Integral Equations and Operator Theory, providing a meeting point for these subjects.^[ref] The relationship is useful in applications: an integral equation can encode a boundary-value problem, while a finite-dimensional approximation produces a linear system. Understanding invertible linear maps, the spectrum and perturbations helps explain when such approximations are meaningful and when small errors can have large consequences.

Identity and discipline: en-exact-sciences.tau.ac.il/math/in-memoriam