17 citations · 47 across the 11 of their papers we have counts for
11 papers
Compact sets in quasi-Banach function spaces and multilinear extrapolation of compactness on
Spyridon Kakaroumpas, Stefanos Lappas
This paper addresses a novel Riesz--Kolmogorov theorem on quasi-Banach function spaces under mild conditions and the extrapolation of multilinear compact operators in the context o…
Extrapolation for bilinear compact operators in the variable exponent setting
Spyridon Kakaroumpas, Stefanos Lappas
We establish extrapolation of compactness for bilinear operators in the scale of weighted variable exponent Lebesgue spaces. First, we prove an abstract principle relying on the Co…
Sharp bilinear estimates for maximal singular integrals with kernels in weighted spaces
Stefanos Lappas, Bae Jun Park
In this paper, we study the boundedness properties of the (dyadic) maximal bilinear operator associated with rough homogeneous kernels on . We establish sharp $L^{p_1}(…
Factorizations for variable exponent Muckenhoupt weights
Stefanos Lappas, Tuomas Oikari
Given two variable exponent Muckenhoupt weights and , we prove that for all small enough there holds that $w_0…
Bilinear singular integral operators with kernels in weighted spaces
Petr Honzík, Stefanos Lappas, Lenka Slavíková
We establish the full quasi-Banach range of bounds for one-dimensional bilinear singular integral operator…
Quantitative estimates for bounded holomorphic semigroups
Tuomas Hytönen, Stefanos Lappas
In this paper we revisit the theory of one-parameter semigroups of linear operators on Banach spaces in order to prove quantitative bounds for bounded holomorphic semigroups. Subse…
Extrapolation of compactness on weighted Morrey spaces
Stefanos Lappas
In a previous work, "compact versions" of Rubio de Francia's weighted extrapolation theorem were proved, which allow one to extrapolate the compactness of an linear operator from j…
Extrapolation of compactness on weighted spaces: Bilinear operators
Tuomas Hytönen, Stefanos Lappas
In a previous paper, we obtained several "compact versions" of Rubio de Francia's weighted extrapolation theorem, which allowed us to extrapolate the compactness of linear operator…
Extrapolation of compactness on weighted spaces II: Off-diagonal and limited range estimates
Tuomas Hytönen, Stefanos Lappas
In a previous paper by one of us, a "compact version" of Rubio de Francia's weighted extrapolation theorem was proved, which allows one to extrapolate the compactness of an operato…
Dyadic representation theorem using smooth wavelets with compact support
Tuomas Hytönen, Stefanos Lappas
The representation of a general Calderón--Zygmund operator in terms of dyadic Haar shift operators first appeared as a tool to prove the theorem, and it has found a number of…
Extrapolation of compactness on weighted spaces
Tuomas Hytönen, Stefanos Lappas
Let be a linear operator that, for some , is bounded on for all and in addition compact on $L^{p_1}(w_1…