<p>In any 5-dimensional closed Sasakian manifold, we prove that any minmax operation on the area among Legendrian surfaces is achieved by a continuous conformal Legendrian map from a closed Riemann surface <i>S</i> into <InlineEquation ID="IEq1"> <EquationSource Format="TEX">\(N^5\)</EquationSource> <EquationSource Format="MATHML"><math> <msup> <mi>N</mi> <mn>5</mn> </msup> </math></EquationSource> </InlineEquation> equipped with an integer multiplicity bounded in <InlineEquation ID="IEq2"> <EquationSource Format="TEX">\(L^\infty \)</EquationSource> <EquationSource Format="MATHML"><math> <msup> <mi>L</mi> <mi>∞</mi> </msup> </math></EquationSource> </InlineEquation>. Moreover this map, equipped with this multiplicity, satisfies a weak version of the Hamiltonian Minimal Equation. We conjecture that any solution to this equation is a smooth branched Legendrian immersion away from isolated Schoen–Wolfson conical singularities with non-zero Maslov class.</p>

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Area Variations Under Legendrian Constraint

  • Tristan Rivière

摘要

In any 5-dimensional closed Sasakian manifold, we prove that any minmax operation on the area among Legendrian surfaces is achieved by a continuous conformal Legendrian map from a closed Riemann surface S into \(N^5\) N 5 equipped with an integer multiplicity bounded in \(L^\infty \) L . Moreover this map, equipped with this multiplicity, satisfies a weak version of the Hamiltonian Minimal Equation. We conjecture that any solution to this equation is a smooth branched Legendrian immersion away from isolated Schoen–Wolfson conical singularities with non-zero Maslov class.