Edgar Krahn 1894-1961: A Centenary Volume

Acta Alekseyev analytic curves astroid boundary conditions C. G. J. Jacobi calculate connected considered const coordinates corresponding Courant curvature denote derivatives dimensional docentship domain G Dorpat Edgar Krahn eigenfunctions eigenvalues equal Estonian Əsi əyi Faber-Krahn inequality finite number formula four color problem four color theorem free plate geodesic curvature geodesic lines geometry German given Göttingen Humal hyperplane hypersurface hypersurface of revolution integral intersection IOS Press isoperimetric inequality Jaakson Krahn's paper later lectures Li(z Liouville Lumiste Matemaatika Math mathematicians meridian curves method n-dimensional obtained parallel partial differential equation Peetre Eds pieces piecewise analytic plane position private docent probability theory professor proof published R₁ Rägo random walk result Rp+1 Russian Sarv Section sequence solution sphere stereometry surface of revolution Tallinn text-books theorem thesis transformation u-axis University of Tartu variables volume Weyl x-axis Yuryev ди