Singularity formation for the two-dimensional harmonic map flow into $$S^2$$

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James Eells, J. H. Sampson · American Journal of Mathematics · 1964 · 2.2K citations

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Hong‐Kun Xu · Journal of the London Mathematical Society · 2002 · 1.7K citations

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Fixed points of nonexpanding maps

Benjamin Halpern · Bulletin of the American Mathematical Society · 1967 · 1.1K citations · Full text

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