A 𝑇(1)-theorem in relation to a semigroup of operators and applications to new paraproducts

Author:

Bernicot Frédéric

Abstract

In this work, we are interested in developing new directions of the famous T ( 1 ) T(1) -theorem. More precisely, we develop a general framework where we look to replace the John-Nirenberg space B M O BMO (in the classical result) by a new B M O L BMO_{L} , associated to a semigroup of operators ( e t L ) t > 0 (e^{-tL})_{t>0} . These new spaces B M O L BMO_L (including B M O BMO ) have recently appeared in numerous works in order to extend the theory of Hardy and B M O BMO space to more general situations. Then we give applications by describing boundedness for a new kind of paraproduct, built on the considered semigroup. In addition we obtain a version of the classical T ( 1 ) T(1) -theorem for doubling Riemannian manifolds.

Publisher

American Mathematical Society (AMS)

Subject

Applied Mathematics,General Mathematics

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