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20152020
most citedSome remarks on embeddings in the subelliptic setting

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math.AP2020

Taylor's Theorem for Functionals on BMO with Application to BMO Local Minimizers

Daniel E. Spector, Scott J. Spector

In this note two results are established for energy functionals that are given by the integral of over with $\nab…

math.AP2020

BMO and Elasticity: Korn's Inequality; Local Uniqueness in Tension

Daniel E. Spector, Scott J. Spector

In this manuscript two estimates are obtained, one for Linear Elasticity and one for Nonlinear Elasticity. It is first shown that the -seminorm of the gradient of a vect…

math.AP2019

New Directions in Harmonic Analysis on

Daniel Spector

The study of what we now call Sobolev inequalities has been studied for almost a century in various forms, while it has been eighty years since Sobolev's seminal mathematical contr…

math.AP2018

Optimal embeddings into Lorentz spaces for some vector differential operators via Gagliardo's lemma

Daniel Spector, Jean Van Schaftingen

We prove a family of Sobolev inequalities of the form where $A (D) : C^\i…

math.AP2017

Some remarks on boundary operators of Bessel extensions

Jesse Goodman, Daniel Spector

In this paper we study some boundary operators of a class of Bessel-type Littlewood-Paley extensions whose prototype is \[Δ_x u(x,y) +\frac{1-2s}{y} \frac{\partial u}{\partial y}(x…

math.AP2015

-theory for fractional gradient PDE with VMO coefficients

Armin Schikorra, Tien-Tsan Shieh, Daniel Spector

In this paper, we prove estimates for the fractional derivatives of solutions to elliptic fractional partial differential equations whose coefficients are . In particula…