66 citations · 691 across the 59 of their papers we have counts for
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math.AP2016★ 56 cited
Sharp commutator estimates via harmonic extensions
Enno Lenzmann, Armin Schikorra
We give an alternative proof of several sharp commutator estimates involving Riesz transforms, Riesz potentials, and fractional Laplacians. Our methods only involve harmonic extens…
math.AP2016★ 14 cited
Regularity for a fractional p-Laplace equation
Armin Schikorra, Tien-Tsan Shieh, Daniel Spector
In this note we consider regularity theory for a fractional -Laplace operator which arises in the complex interpolation of the Sobolev spaces, the -Laplacian. We obtain…
math.AP2016
Invitation to H-systems in higher dimensions: known results, new facts, and related open problems
Armin Schikorra, Paweł Strzelecki
In this paper, we discuss two well-known open problems in the regularity theory for nonlinear, conformally invariant elliptic systems in dimensions , with a critical nonlin…