Searched for: author%3A%22Frey%2C+D.%22
(1 - 3 of 3)
document
Frey, D. (author), Nieraeth, Z. (author)
We consider operators T satisfying a sparse domination property (Formula presented.)with averaging exponents (Formula presented.). We prove weighted strong type boundedness for (Formula presented.) and use new techniques to prove weighted weak type (Formula presented.) boundedness with quantitative mixed (Formula presented.)–(Formula...
journal article 2018
document
Frey, D. (author), McIntosh, Alan (author), Portal, Pierre (author)
Perturbed Hodge-Dirac operators and their holomorphic functional calculi, as investigated in the papers by Axelsson, Keith and the second author, provided insight into the solution of the Kato square-root problem for elliptic operators in L<sup>2</sup> spaces and allowed for an extension of these estimates to other systems with applications...
journal article 2018
document
Bernicot, Frédéric (author), Frey, D. (author)
We consider abstract Sobolev spaces of Bessel-type associated with an operator. In this work, we pursue the study of algebra properties of such functional spaces through the corresponding semigroup. As a follow-up to our previous work, we show that by making use of the property of a 'carré du champ' identity, this algebra property holds in a...
journal article 2018