Wirtinger inequality (2-forms)
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- For other inequalities named after Wirtinger, see Wirtinger's inequality.
In mathematics, the Wirtinger inequality for 2-forms, named after Wilhelm Wirtinger, states that the exterior th power of the standard symplectic form ω, when evaluated on a simple (decomposable) (2ν)-vector ζ of unit volume, is bounded above by . In other words,