3 papers
math.FA2021
Upper and lower estimates for rate of convergence in the Chernoff product formula for semigroups of operators
Oleg E. Galkin, Ivan D. Remizov
Chernoff approximations to strongly continuous one-parameter semigroups give solutions to a wide class of differential equations. This paper studies the rate of convergence of the…
math.DS2020
Some parabolic equations for measures and Gaussian semigroups
O. E. Galkin, S. Yu. Galkina
This short communication (preprint) is devoted to mathematical study of evolution equations that are important for mathematical physics and quantum theory; we present new explicit…
math.CA2020
Functions consistent with real numbers, and global extrema of functions in exponential Takagi class
Oleg Galkin, Svetlana Galkina
The functions of the Takagi exponential class are similar in construction to the continuous, nowhere differentiable Takagi function described in 1901. They have one real parameter…