L orthornormal basis
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11: 23.2 Definitions and Periodic Properties
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►The generators of a given lattice are not unique.
…where are integers, then , are generators of iff
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►When the functions are related by
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►When it is important to display the lattice with the functions they are denoted by , , and , respectively.
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►If , is any pair of generators of , and is defined by (23.2.1), then
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12: 18.41 Tables
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►Abramowitz and Stegun (1964, Tables 22.4, 22.6, 22.11, and 22.13) tabulates , , , and for .
The ranges of are for and , and for and .
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►For , , and see §3.5(v).
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13: 1.3 Determinants, Linear Operators, and Spectral Expansions
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►If tends to a limit as , then we say that the infinite determinant
converges and .
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►The corresponding eigenvectors can be chosen such that they form a complete orthonormal basis in .
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►Assuming is an orthonormal basis in , any vector may be expanded as
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14: 19.33 Triaxial Ellipsoids
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►The external field and the induced magnetization together produce a uniform field inside the ellipsoid with strength , where is the demagnetizing factor, given in cgs units by
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19.33.7
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19.33.8
►where and are obtained from by permutation of , , and .
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15: 23.9 Laurent and Other Power Series
16: 11.15 Approximations
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Luke (1975, pp. 416–421) gives Chebyshev-series expansions for , , , and , , for ; , , , and , , ; the coefficients are to 20D.
MacLeod (1993) gives Chebyshev-series expansions for , , , and , , ; the coefficients are to 20D.
17: 23.7 Quarter Periods
18: 18.8 Differential Equations
19: 23.3 Differential Equations
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23.3.1
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23.3.2
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►Given and there is a unique lattice such that (23.3.1) and (23.3.2) are satisfied.
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►Conversely, , , and the set are determined uniquely by the lattice independently of the choice of generators.
However, given any pair of generators , of , and with defined by (23.2.1), we can identify the individually, via
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20: 11.14 Tables
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Abramowitz and Stegun (1964, Chapter 12) tabulates , , and for and , to 6D or 7D.
Agrest et al. (1982) tabulates and for and to 11D.
Barrett (1964) tabulates for and to 5 or 6S, to 2S.
Zhang and Jin (1996) tabulates and for and to 8D or 7S.
Agrest et al. (1982) tabulates and for to 11D.