J. Andersson

activity

20042024

most citedCross-shaped and Degenerate Singularities in an Unstable Elliptic Free Boundary Problem

30 citations · 125 across the 40 of their papers we have counts for

collaborators

Showing 2013Show all

3 papers · 1 filter

math.AP2013

Equilibrium points of a singular cooperative system with free boundary

John Andersson, Henrik Shahgholian, Nina N. Uraltseva +1

In this paper we initiate the study of maps minimising the energy $\int_{D} (∣\nabla ∣ ˘^{2} + 2∣ ∣ ˘) d x .$ which, due to Lipschitz character of the integrand, gives rise to the si…

math.AP2013

Optimal Regularity for The Signorini Problem and its Free Boundary

John Andersson

We will show optimal regularity for minimizers of the Signorini problem for the Lame system. In particular if $= ˘ (u^{1}, u^{2}, u^{3}) \in W^{1, 2} (B_{1}^{+} : R^{3})$ minimizes $$ J(\u)=\int_{B_1…

math.NT2013★ 2 cited

Bounded prime gaps in short intervals

Johan Andersson

We generalise Zhang's and Pintz recent results on bounded prime gaps to give a lower bound for the the number of prime pairs bounded by 6*10^7 in the short interval $[x,x+x (\log x…