The Seifert - Van Kampen theorem for the group of global sections
k - Convexity in euclidean 3 - space
A class of meromorphic univalent functions with positive and fixed finitely many coefficients
A note on Zhona's inverse theorem
On the duality of generalised Euler formula for Euclidean hypersurfaces
On the inverse scattering problem for a discrete one-dimensional Schrödinger equation