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math.DG2019

Harmonic maps with free boundary from degenerating bordered Riemann surfaces

Lei Liu, Chong Song, Miaomiao Zhu

We study the blow-up analysis and qualitative behavior for a sequence of harmonic maps with free boundary from degenerating bordered Riemann surfaces with uniformly bounded energy.…

math.DG2019

Global existence of the harmonic map heat flow into Lorentzian manifolds

Xiaoli Han, Juergen Jost, Lei Liu +1

We investigate a parabolic-elliptic system for maps from a compact Riemann surface into a Lorentzian manifold with a warped product metric. That s…

math.DG2018

The qualitative behavior at the free boundary for approximate harmonic maps from surfaces

Juergen Jost, Lei Liu, Miaomiao Zhu

Let be a sequence of maps from a compact Riemann surface with smooth boundary to a general compact Riemannian manifold with free boundary on a smooth submanifold…

math.DG2018

Energy identity for a class of approximate Dirac-harmonic maps from surfaces with boundary

Juergen Jost, Lei Liu, Miaomiao Zhu

For a sequence of coupled fields from a compact Riemann surface with smooth boundary to a general compact Riemannian manifold with uniformly bounded energy and…

math.DG2018

A global weak solution to the Lorentzian harmonic map flow

Xiaoli Han, Lei Liu, Liang Zhao

We investigate a parabolic-elliptic system which is related to a harmonic map from a compact Riemann surface with a smooth boundary into a Lorentzian manifold with a warped product…