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A note on Fourier coefficients of Poincar\'e series
We give a short and "soft" proof of the asymptotic orthogonality of Fourier
coefficients of Poincar\'e series for classical modular forms as well as for
Siegel cusp forms, in a qualitative form.Comment: 10 page
A note on Poincar\'e- and Friedrichs-type inequalities
We introduce a simple criterion to check coercivity of bilinear forms on
subspaces of Hilbert-spaces. The presented criterion allows to derive many
standard and non-standard variants of Poincar\'e- and Friedrichs-type
inequalities with very little effort
A note on some Poincar\'e inequalities on convex sets by Optimal Transport methods
We show that a class of Poincar\'e-Wirtinger inequalities on bounded convex
sets can be obtained by means of the dynamical formulation of Optimal
Transport. This is a consequence of a more general result valid for convex
sets, possibly unbounded.Comment: 13 page
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