= Quadratic differential
{wiki=Quadratic_differential}
A **quadratic differential** is a mathematical concept that arises primarily in the fields of complex analysis and differential geometry, often used to study the properties of Riemann surfaces and their associated geometric structures. In a more formal description, a quadratic differential on a Riemann surface can be seen as a section of the tensor product of the cotangent bundle with itself, specifically a differential form of type (2,0).
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