Mikhail Katz (born 1958, Chișinău) is an Israeli mathematician, a professor of mathematics at Bar-Ilan University. His main interests are differential geometry and geometric topology; he is the author of a book about systolic geometry.
Katz earned a bachelor's degree in 1980 from Harvard University. He did his graduate studies at Columbia University, receiving his Ph.D. in 1984 under the joint supervision of Troels Jørgensen and Mikhael Gromov. He moved to Bar-Ilan University in 1999, after previously holding positions at the University of Maryland, College Park, Stony Brook University, Indiana University Bloomington, the Institut des Hautes Études Scientifiques, the University of Rennes 1, Henri Poincaré University, and Tel Aviv University.
Katz has performed research in systolic geometry in collaboration with Luigi Ambrosio, Victor Bangert, Mikhail Gromov, Steve Shnider, Shmuel Weinberger, and others. He has authored research publications appearing in leading journals including Communications on Pure and Applied Mathematics, Duke Mathematical Journal, Geometric and Functional Analysis, and Journal of Differential Geometry. Along with these papers, Katz was a contributor to the book "Metric Structures for Riemannian and Non-Riemannian Spaces". Marcel Berger in his article "What is... a Systole?" lists the book (Katz, 2007) as one of two books he cites in systolic geometry.
Selected publications 
- Katz, Mikhail G.; Sherry, David (2012), "Leibniz's laws of continuity and homogeneity", Notices of the American Mathematical Society, here 59 (11): 1550–1558.
- Katz, Mikhail G.; Schaps, David; Shnider, Steve (2013), "Almost Equal: The Method of Adequality from Diophantus to Fermat and Beyond", Perspectives on Science 21 (3), arXiv:1210.7750.
- Borovik, Alexandre; Jin, Renling; Katz, Mikhail G. (2012), "An Integer Construction of Infinitesimals: Toward a Theory of Eudoxus Hyperreals", Notre Dame Journal of Formal Logic 53 (4): 557–570, arXiv:1210.7475, doi:10.1215/00294527-1722755.
- Kanovei, Vladimir; Katz, Mikhail G.; Mormann, Thomas, "Tools, Objects, and Chimeras: Connes on the Role of Hyperreals in Mathematics", Foundations of Science, arXiv:1211.0244, doi:10.1007/s10699-012-9316-5.
- Katz, Mikhail; Tall, David (2012), "A Cauchy-Dirac delta function", Foundations of Science, arXiv:1206.0119, doi:10.1007/s10699-012-9289-4.
- Katz, Mikhail; Sherry, David (2012), "Leibniz’s Infinitesimals: Their Fictionality, Their Modern Implementations, and Their Foes from Berkeley to Russell and Beyond", Erkenntnis, arXiv:1205.0174, doi:10.1007/s10670-012-9370-y.
- Błaszczyk, Piotr; Katz, Mikhail; Sherry, David (2012), "Ten misconceptions from the history of analysis and their debunking", Foundations of Science, arXiv:1202.4153, doi:10.1007/s10699-012-9285-8.
- Katz, Mikhail; Tall, David (2012), Tension between Intuitive Infinitesimals and Formal Mathematical Analysis, Bharath Sriraman, Editor. Crossroads in the History of Mathematics and Mathematics Education. The Montana Mathematics Enthusiast Monographs in Mathematics Education 12, Information Age Publishing, Inc., Charlotte, NC, pp. 71–89, arXiv:1110.5747.
- Katz, Karin Usadi; Katz, Mikhail G. (2011), "Meaning in Classical Mathematics: Is it at Odds with Intuitionism?", Intellectica 56 (2): 223–302, arXiv:1110.5456.
- Borovik, Alexandre; Katz, Mikhail G. (2012), "Who gave you the Cauchy--Weierstrass tale? The dual history of rigorous calculus", Foundations of Science 17 (3): 245–276, arXiv:1108.2885, doi:10.1007/s10699-011-9235-x.
- Katz, Karin Usadi; Katz, Mikhail G. (2011), "Cauchy's continuum", Perspectives on Science 19 (4): 426–452, doi:10.1162/POSC_a_00047, MR 2884218.
- Katz, Karin Usadi; Katz, Mikhail G.; Sabourau, Stéphane; Shnider, Steven; Weinberger, Shmuel (2011), "Relative systoles of relative-essential 2-complexes", Algebraic & Geometric Topology 11 (1): 197–217, doi:10.2140/agt.2011.11.197, MR 2764040.
- Katz, Karin Usadi; Katz, Mikhail G. (2012), "Stevin numbers and reality", Foundations of Science 17 (2): 109–123, doi:10.1007/s10699-011-9228-9.
- Katz, Karin Usadi; Katz, Mikhail G. (2012), "A Burgessian critique of nominalistic tendencies in contemporary mathematics and its historiography", Foundations of Science 17 (1): 51–89, arXiv:1104.0375, doi:10.1007/s10699-011-9223-1, MR 2896999.
- Katz, Mikhail G. (2007), Systolic geometry and topology, Mathematical Surveys and Monographs 137, Providence, RI: American Mathematical Society, ISBN 978-0-8218-4177-8, MR 2292367. With an appendix by J. Solomon.
- Katz, Karin Usadi; Katz, Mikhail G. (2010), "When is .999... less than 1?", The Montana Mathematics Enthusiast 7 (1): 3–30, arXiv:1007.3018.
- Katz, Karin Usadi; Katz, Mikhail G. (2010), "Zooming in on infinitesimal 1–.9.. in a post-triumvirate era", Educational Studies in Mathematics 74 (3): 259–273, arXiv:1003.1501, doi:10.1007/s10649-010-9239-4.
- Bangert, Victor; Katz, Mikhail G. (2003), "Stable systolic inequalities and cohomology products", Communications on Pure and Applied Mathematics 56 (7): 979–997, doi:10.1002/cpa.10082, MR 1990484.
- Katz, Mikhail G.; Rudyak, Yuli B. (2006), "Lusternik–Schnirelmann category and systolic category of low-dimensional manifolds", Communications on Pure and Applied Mathematics 59 (10): 1433–1456, doi:10.1002/cpa.20146, MR 2248895.
- Bangert, Victor; Katz, Mikhail G.; Shnider, Steven; Weinberger, Shmuel (2009), "E7, Wirtinger inequalities, Cayley 4-form, and homotopy", Duke Mathematical Journal 146 (1): 35–70, arXiv:math.DG/0608006, doi:10.1215/00127094-2008-061, MR 2475399.
- Croke, Christopher B.; Katz, Mikhail G. (2003), "Universal volume bounds in Riemannian manifolds", in Yau, S. T., Surveys in Differential Geometry VIII, Lectures on Geometry and Topology held in honor of Calabi, Lawson, Siu, and Uhlenbeck at Harvard University, May 3–5, 2002, Int. Press, Somerville, MA, pp. 109–137, arXiv:math.DG/0302248, MR 2039987.
- Katz, Mikhail G. (1983), "The filling radius of two-point homogeneous spaces", Journal of Differential Geometry 18 (3): 505–511, MR 723814.
- Curriculum vitae, retrieved 2011-05-23.
- Mikhail Katz at the Mathematics Genealogy Project
- Gromov, Misha: Metric structures for Riemannian and non-Riemannian spaces. Based on the 1981 French original. With appendices by M. Katz, P. Pansu and S. Semmes. Translated from the French by Sean Michael Bates. Progress in Mathematics, 152. Birkhäuser Boston, Inc., Boston, MA, 1999. xx+585 pp. ISBN 0-8176-3898-9
- Berger, M.: What is... a Systole? Notices of the AMS 55 (2008), no. 3, 374–376.
- Katz & Katz (2010).
- Stewart, I. (2009) Professor Stewart's Hoard of Mathematical Treasures, Profile Books, p. 174.