Speciality:
01.01.06 (Mathematical logic, algebra, and number theory)
Birth date:
3.06.1947
E-mail: ,
Website: http://www.math.toronto.edu/askold/ Keywords: newton polyhedra,
toric geometry,
fewnomials,
real analitik sets,
topological version of Galois theory.
Subject:
The topological version of Galois theory answers the question about the insolvability of differential equations in quadratures by looking at the Riemann surfaces of the solutions. The topological version of Galois theory provides with the strongest results about the insolvability of differential equations in finite terms. The theory of fewnomials describes a wide class of real transcendental arieties, that are very similar to algebraic varieties. The theory of fewnomials is widely used in different areas of mathematics such as real algebraic geometry, logic, the theory of abelian integrals, the theory of elementary functions, and the qualitative theory of differential equations. The theory of Newton polyhedra relates the geometry of convex polyhedra and algebraic geometry. I discovered a connection between the theory of Newton polyhdera and the geometry of toric varieties. This connection is nowadays fundamental in the theory of Newton polyhedra. Using the geometry of polyhedra I was able to calculate many invariants of algebraic varieties. On the other hand, methods of algebraic geometry allowed me to obtain a series of new results in the geometry of polyhedra.
Main publications:
A. G. Khovanskii, “Newton polyhedra and toroidal varieties”, Funktsional. Anal. i Prilozhen., 11:4 (1977), 56–64; Funct. Anal. Appl., 11:4 (1977), 289–296
Khovanskii A., Fewnomials, Translations of Mathematical Monographs, 88, Providence, RI, Amer. Math. Soc., 1991, viii+139 pp.
A. V. Pukhlikov, A. G. Khovanskii, “The Riemann–Roch theorem for integrals and sums of quasipolynomials on virtual polytopes”, Algebra i Analiz, 4:4 (1992), 188–216; St. Petersburg Math. J., 4:4 (1993), 789–812
Khovanskii A., “Newton polyhedrons, a new formula for mixed volume, product of roots of a system of equations”, The Arnoldfest, Proceedings of a Conference (Toronto, ON, 1997), Fields Inst. Commun., 24, 1999, 325–364
Kaveh K., Khovanskii A. G., “Newton–Okounkov bodies, semigroups of integral points, graded algebras and intersection theory”, Annals of Mathematics, 176:2, 925–978
Khovanskii A. G., Topological Galois theory. Solvability and unsolvability of equations in nite terms, Springer Monographs in Mathematics, XVIII, Springer, Berlin Heidelberg, 2014, 305 pp.
; Funct. Anal. Appl., 11:4 (1977), 
