[图书][B] Hardy inequalities on homogeneous groups: 100 years of Hardy inequalities

M Ruzhansky, D Suragan - 2019 - library.oapen.org
This open access book provides an extensive treatment of Hardy inequalities and closely
related topics from the point of view of Folland and Stein's homogeneous (Lie) groups. The …

[HTML][HTML] Layer potentials, Kac's problem, and refined Hardy inequality on homogeneous Carnot groups

M Ruzhansky, D Suragan - Advances in Mathematics, 2017 - Elsevier
We propose the analogues of boundary layer potentials for the sub-Laplacian on
homogeneous Carnot groups/stratified Lie groups and prove continuity results for them. In …

[HTML][HTML] Isoperimetric inequalities for Schatten norms of Riesz potentials

G Rozenblum, M Ruzhansky, D Suragan - Journal of Functional Analysis, 2016 - Elsevier
In this note we prove that the ball is a maximiser for integer order Schatten p-norms of the
Riesz potential operators among all domains of a given measure in R d. In particular, the …

[HTML][HTML] Nonlinear damped wave equations for the sub-Laplacian on the Heisenberg group and for Rockland operators on graded Lie groups

M Ruzhansky, N Tokmagambetov - Journal of Differential Equations, 2018 - Elsevier
In this paper we study the Cauchy problem for the semilinear damped wave equation for the
sub-Laplacian on the Heisenberg group. In the case of the positive mass, we show the …

Best constants in Sobolev and Gagliardo–Nirenberg inequalities on graded groups and ground states for higher order nonlinear subelliptic equations

M Ruzhansky, N Tokmagambetov… - Calculus of Variations …, 2020 - Springer
In this paper the dependence of the best constants in Sobolev and Gagliardo–Nirenberg
inequalities on the precise form of the Sobolev space norm is investigated. The analysis is …

Local Hardy and Rellich inequalities for sums of squares of vector fields

M Ruzhansky, D Suragan - 2017 - projecteuclid.org
We prove local refined versions of Hardy's and Rellich's inequalities as well as of uncertainty
principles for sums of squares of vector fields on bounded sets of smooth manifolds under …

Green's Identities, Comparison Principle and Uniqueness of Positive Solutions for Nonlinear p-sub-Laplacian Equations on Stratified Lie Groups

M Ruzhansky, D Suragan - Potential Analysis, 2020 - Springer
We propose analogues of Green's and Picone's identities for the p-sub-Laplacian on
stratified Lie groups. In particular, these imply a generalised Díaz-Saá inequality. Using …

[图书][B] Spectral geometry of partial differential operators

M Ruzhansky, M Sadybekov, D Suragan - 2020 - library.oapen.org
This book is an attempt to collect a number of properties emerging in recent research
describing certain features of the theory of partial differential equations that can be attributed …

Some spectral geometry inequalities for generalized heat potential operators

A Kassymov, D Suragan - Complex Analysis and Operator Theory, 2017 - Springer
In this paper we prove that the circular cylinder is a maximizer of the Schatten p-norm of
generalized heat potential operators among all Euclidean cylindric domains of a given …

[HTML][HTML] On Green functions for Dirichlet sub-Laplacians on H-type groups

N Garofalo, M Ruzhansky, D Suragan - Journal of Mathematical Analysis …, 2017 - Elsevier
We construct Green functions of Dirichlet boundary value problems for sub-Laplacians on
certain unbounded domains of a prototype Heisenberg-type group (prototype H-type group …