theta functions
theta functions
[′thād·ə ‚fəŋk·shənz] (mathematics)
Complex functions used in the study of Riemann surfaces and of elliptic functions and elliptic integrals; they are: where q = exp π i τ, and τ is a constant complex number with positive imaginary part.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
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