The character d, a stylized cursive form of the letter d known as the partial differential symbol, is a mathematical symbol used mainly to denote a partial derivative. It is also used to denote the boundary of a set, the boundary operator in a chain complex, and the conjugate of the Dolbeault operator acting on smooth differential forms over a complex manifold. This description is adapted from Wikipedia contributors under CC BY-SA 4.0; changes were made. https://creativecommons.org/licenses/by-sa/4.0/
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1. Partial Differential Symbol (Wikipedia)
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The character ∂ (Unicode: U+2202) is a stylized cursive d mainly used as a mathematical symbol, usually to denote a partial derivative such as ∂ z / ∂ x {\displaystyle {\partial z}/{\partial x}} (read as "the partial derivative of z with respect to x").
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