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m Replacing deprecated latex syntax mw:Extension:Math/Roadmap |
m →Differentiable plurisubharmonic functions: add internal link |
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Line 27:
: <math>\lambda_{ij}=\frac{\partial^2f}{\partial z_i\partial\bar z_j}</math>
is [[Definiteness_of_a_matrix#Definitions_for_complex_matrices|positive semidefinite]].
Equivalently, a <math>C^2</math>-function ''f'' is plurisubharmonic if and only if <math>\sqrt{-1}\partial\bar\partial f</math> is a [[positive form|positive (1,1)-form]].
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