principal value (or branch)
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31—40 of 158 matching pages
31: 4.30 Elementary Properties
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32: 19.3 Graphics
33: 10.2 Definitions
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§10.2(ii) Standard Solutions
… ►The principal branch of corresponds to the principal value of (§4.2(iv)) and is analytic in the -plane cut along the interval . … ►The principal branches correspond to principal values of the square roots in (10.2.5) and (10.2.6), again with a cut in the -plane along the interval . … ► … ►Except where indicated otherwise, it is assumed throughout the DLMF that the symbols , , , and denote the principal values of these functions. …34: 19.2 Definitions
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►The principal values of and are even functions.
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►If , then the integral in (19.2.11) is a Cauchy principal value.
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►where the Cauchy principal value is taken if .
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►In (19.2.18)–(19.2.22) the inverse trigonometric and hyperbolic functions assume their principal values (§§4.23(ii) and 4.37(ii)).
…The Cauchy principal value is hyperbolic:
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35: 15.2 Definitions and Analytical Properties
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►The branch obtained by introducing a cut from to on the real -axis, that is, the branch in the sector , is the principal
branch (or principal value) of .
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►again with analytic continuation for other values of , and with the principal branch defined in a similar way.
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36: 14.28 Sums
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►where the branches of the square roots have their principal values when and are continuous when .
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37: 23.18 Modular Transformations
38: 23.8 Trigonometric Series and Products
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►where in (23.8.4) the terms in and are to be bracketed together (the Eisenstein convention or principal value: see Weil (1999, p. 6) or Walker (1996, p. 3)).
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