Dedekind eta function

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Science and technology

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What Wikipedia says

In mathematics, the Dedekind eta function, named after Richard Dedekind, is a modular form of weight 1/2 and is a function defined on the upper half-plane of complex numbers, where the imaginary part is positive. It also occurs in bosonic string theory.

Excerpt from the Wikipedia article “Dedekind eta function”, under the CC BY-SA 4.0 license. Read the article on Wikipedia