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Symbol Name Meaning SI unit of measure nabla dot : the divergence operator often pronounced "del dot" per meter (m −1) : nabla cross : the curl operator often pronounced "del cross"
The nabla is a triangular symbol resembling an inverted Greek delta: [1] or ∇. The name comes, by reason of the symbol's shape, from the Hellenistic Greek word νάβλα for a Phoenician harp, [2] [3] and was suggested by the encyclopedist William Robertson Smith in an 1870 letter to Peter Guthrie Tait.
In logic, a set of symbols is commonly used to express logical representation. The following table lists many common symbols, together with their name, how they should be read out loud, and the related field of mathematics.
The Green's function, (~ ~ ′), for the d'Alembertian is defined by the equation (~ ~ ′) = (~ ~ ′)where (~ ~ ′) is the multidimensional Dirac delta function ...
A brain signal frequency (beta, alpha, theta, delta) ranging from 4–8 Hz; One of the variables known as "Greeks" in finance, representing time decay of options or the change in the intrinsic value of an option divided by the number of days until the option expires; The angle of the incident beam during X-ray diffraction
the Kronecker delta function [3] the Feigenbaum constants [4] the force of interest in mathematical finance; the Dirac delta function [5] the receptor which enkephalins have the highest affinity for in pharmacology [6] the Skorokhod integral in Malliavin calculus, a subfield of stochastic analysis; the minimum degree of any vertex in a given graph
The article is the first known article to offer a description of "therian" identity by a major European newspaper. In 2011, the International Anthropomorphic Research Project (IARP), a Canadian - American multidisciplinary research group, expanded the scope of its annual International Furry Survey to include otherkin and therians for the first ...
The character ∂ (Unicode: U+2202) is a stylized cursive d mainly used as a mathematical symbol, usually to denote a partial derivative such as / (read as "the partial derivative of z with respect to x").