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21—30 of 153 matching pages
21: 26.13 Permutations: Cycle Notation
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26.13.2
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►Cycles of length one are fixed points.
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►An element of with fixed points, cycles of length cycles of length , where , is said to have cycle type
.
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►A derangement is a permutation with no fixed points.
The derangement number, , is the number of elements of with no fixed points:
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22: 2.1 Definitions and Elementary Properties
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►Let be a point set with a limit point
.
As in
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►If is a finite limit point of , then
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►Similarly for finite limit point
in place of .
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►where is a finite, or infinite, limit point of .
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23: 13.27 Mathematical Applications
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►For applications of Whittaker functions to the uniform asymptotic theory of differential equations with a coalescing turning point and simple pole see §§2.8(vi) and 18.15(i).
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24: Mark J. Ablowitz
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►ODEs which do not have moveable branch point singularities.
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25: 7.20 Mathematical Applications
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►For applications of the complementary error function in uniform asymptotic approximations of integrals—saddle point coalescing with a pole or saddle point coalescing with an endpoint—see Wong (1989, Chapter 7), Olver (1997b, Chapter 9), and van der Waerden (1951).
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►Let be any point on the projected spiral.
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26: 21.7 Riemann Surfaces
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►Consider the set of points in that satisfy the equation
…Equation (21.7.1) determines a plane algebraic curve in , which is made compact by adding its points at infinity.
…This compact curve may have singular points, that is, points at which the gradient of vanishes.
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►The zeros , of specify the finite branch points
, that is, points at which , on the Riemann surface.
Denote the set of all branch points by .
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27: 10.20 Uniform Asymptotic Expansions for Large Order
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►Corresponding points of the mapping are shown in Figures 10.20.1 and 10.20.2.
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►The points
where these curves intersect the imaginary axis are , where
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28: 10.41 Asymptotic Expansions for Large Order
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►Figures 10.41.1 and 10.41.2 show corresponding points of the mapping of the -plane and the -plane.
…Thus is the point
, where is given by (10.20.18).
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29: Bibliography O
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Error bounds for asymptotic expansions in turning-point problems.
J. Soc. Indust. Appl. Math. 12 (1), pp. 200–214.
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Second-order linear differential equations with two turning points.
Philos. Trans. Roy. Soc. London Ser. A 278, pp. 137–174.
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Improved error bounds for second-order differential equations with two turning points.
J. Res. Nat. Bur. Standards Sect. B 80B (4), pp. 437–440.
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Connection formulas for second-order differential equations with multiple turning points.
SIAM J. Math. Anal. 8 (1), pp. 127–154.
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Second-order differential equations with fractional transition points.
Trans. Amer. Math. Soc. 226, pp. 227–241.
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