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# Buddy list for perucho

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Members: bbukh Algeboy drini mathcam akrowne Henry CWoo djao pahio perucho (see full roster)Content: Plemelj formulas characteristic values and vectors (of a matrix) Harnack theorem oscillation of a function arithmetic-geometric series Cauchy criterion for the existence of a limit of a function biharmonic equation example of construction of a Schauder basis Laplace transform of a Gaussian function \LaTeX symbol for Cauchy principal value Schwarz and Poisson formulas phase parametrization in $\cos(x+p)=\cos x$ sequences $b^{2n}-1$ and $b^{2n-1}+1$ are divisible by $b+1$ connection between Riccati equation and Airy functions Euler's equation for rigid bodies representation of real numbers particle moving on the astroid at constant frequency spiral motion of a particle particle moving on a cardioid at constant frequency time dilatation of a volume element (see full list)

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