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Integrating a Dirac delta with multidimensional periodic argument

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#integration #dirac-delta #periodic-functions
309
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Periodic B-spline least squares fitting

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#least-squares #periodic-functions #constraints #spline
56
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Must a continuous function on an open interval, and having precisely one orbital point, contract?

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#real-analysis #functions #convergence-divergence #dynamical-systems #periodic-functions
27
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Extracting a fundamental period.

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#sequences-and-series #fourier-transform #periodic-functions
89
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The Fourier Transform of a periodic function

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#fourier-transform #periodic-functions
484
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Average Distance Between Zeroes of $\sin(x)+\sin(x\sqrt{2})+\sin(x\sqrt{3})$

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#real-analysis #periodic-functions #almost-periodic-functions
43
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How to find the period of this function?

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#functions #trigonometry #periodic-functions
69
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Can a combination of exponentials be periodic?

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#periodic-functions
113
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Showing $\cos(x)-\cos(2x)+\cos(3x)$ has no period smaller than $2\pi$ without calculus?

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#fourier-series #alternative-proof #periodic-functions
378
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$\cos (n \phi)$ in terms of $\cos (\phi)$

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#real-analysis #calculus #trigonometry #periodic-functions
92
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Method to check if a series of one variable is periodic

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#ordinary-differential-equations #power-series #periodic-functions
126
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Periodic solutions of second order ODE

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#ordinary-differential-equations #periodic-functions
71
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Differential equation parameter no periodic solution

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#ordinary-differential-equations #periodic-functions
42
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Determine two properties of a trig function

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#derivatives #trigonometry #optimization #exponential-function #periodic-functions
141
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Klein-Gordon PDE infinite line with periodic boundary conditions

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#partial-differential-equations #mathematical-physics #periodic-functions

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