25-30 November 2024
Saint-Petersburg University
Europe/Moscow timezone

Approximation of locally-constant functions by algebraic polynomials and some applications

29 Nov 2024, 16:50
35m
Saint-Petersburg University

Saint-Petersburg University

Department of Mathematics and Computer Sciences, Saint-Petersburg University, Saint Petersburg, 14 line V.O., 29B Yandex maps link: https://yandex.ru/maps/-/CDw2mFl9 Google maps link: https://maps.app.goo.gl/L1Nrzf81wahREKop6 ZOOM streaming at: TBA

Speakers

Konstantin Ryutin (Lomonosov Moscow State University and Moscow Center of Fundamental and Applied Mathematics) Yuri Malykhin (Steklov Mathematical Institute of RAS, Moscow)

Description

We plan to talk about explicit explicit easily implementable polynomial approximations of sufficiently high accuracy for locally constant functions on the union of disjoint segments and some more general disjoint sets.

This problem has important applications in several areas of numerical analysis, complexity theory, quantum algorithms, etc. The one, most relevant for us, is the amplification of approximation method: it allows to construct approximations of higher degree $M$ and better accuracy from the approximations
of degree $m$. Such constructions are used in linear algebra, computer science (communication complexity).

Primary authors

Konstantin Ryutin (Lomonosov Moscow State University and Moscow Center of Fundamental and Applied Mathematics) Yuri Malykhin (Steklov Mathematical Institute of RAS, Moscow)

Presentation Materials

There are no materials yet.