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Publications Influence

Solution representations for a wave equation with weak dissipation

- J. Wirth
- Physics, Mathematics
- 2 October 2002

We consider the Cauchy problem for the weakly dissipative wave equation □v+μ/1+tvt=0, x∈ℝn, t≥0 parameterized by μ>0, and prove a representation theorem for its solutions using the theory of special… Expand

106 15- PDF

Wave equations with time-dependent dissipation II. Effective dissipation

- J. Wirth
- Mathematics
- 15 March 2006

Abstract This article is intended to present a construction of structural representations of solutions to the Cauchy problem for wave equations with time-dependent dissipation above scaling. These… Expand

148 12

Fourier multipliers on compact Lie groups

In this paper we prove L p Fourier multiplier theorems for invariant and also noninvariant operators on compactLie groups in the spirit of thewell-knownHörmander–Mikhlin theorem on Rn and its… Expand

18 6- PDF

Asymptotic properties of solutions to wave equations with time-dependent dissipation

- J. Wirth
- Physics
- 21 October 2004

problems of the form utt +Au+ b(t)ut = 0 for a function u(t) taking values in a Hilbert space H and with a positive closed operator A : H ⊇ D(A) → H can be treated by the same arguments in terms of a… Expand

68 5- PDF

$$L^p$$Lp Fourier multipliers on compact Lie groups

- Michael Ruzhansky, J. Wirth
- Mathematics
- 19 February 2011

In this paper we prove $$L^p$$Lp Fourier multiplier theorems for invariant and also non-invariant operators on compact Lie groups in the spirit of the well-known Hörmander–Mikhlin theorem on… Expand

25 4- PDF

On multipliers on compact Lie groups

- Michael Ruzhansky, J. Wirth
- Mathematics
- 14 March 2013

In this note we announce Lp multiplier theorems for invariant and noninvariant operators on compact Lie groups in the spirit of the well-known Hörmander-Mikhlin theorem on ℝn and its versions on the… Expand

24 3- PDF

Regulatory and financial incentives for scaling up concentrating solar power in developing countries

- N. Kulichenko, J. Wirth
- Business
- 1 June 2011

Concentrating solar thermal (CST) technologies have a clear potential for scaling up renewable energy at the utility level, thereby diversifying the generation portfolio mix, powering development,… Expand

12 3- PDF

The Hardy–Littlewood Maximal Operator

- D. Cruz-Uribe, A. Fiorenza, Michael Ruzhansky, J. Wirth
- Mathematics
- 2014

In this chapter we turn to the study of harmonic analysis on the variable Lebesgue spaces. Our goal is to establish sufficient conditions for the Hardy–Littlewood maximal operator to be bounded on L… Expand

47 2

Global functional calculus for operators on compact Lie groups

- Michael Ruzhansky, J. Wirth
- Mathematics
- 4 July 2013

Abstract In this paper we develop the functional calculus for elliptic operators on compact Lie groups without the assumption that the operator is a classical pseudo-differential operator.… Expand

26 2- PDF

Diffusive wavelets on groups and homogeneous spaces

We explain the basic ideas behind the concept of diffusive wavelets on spheres in the language of representation theory of Lie groups and within the framework of the group Fourier transform given by… Expand

11 2- PDF

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