Torsion-free Chern tangent connection characterizes a Kähler metric
ID: torsion-free-chern-tangent-connection-characterizes-a-kahler-metric
For a Hermitian metric on a complex manifold, the Chern connection on its holomorphic tangent bundle corresponds to a real metric-compatible connection preserving the almost complex structure. Its mixed torsion vanishes, and in holomorphic coordinates its remaining coefficients are . Symmetry in is equivalent to ; its conjugate gives . Thus zero torsion is exactly the Kähler metric condition, and then uniqueness identifies this connection with the Levi-Civita connection.
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