Geodesic

Volume XXVII (2019) no. 2

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Contents
Intersecting semi-disks and the synergy of three quadratic forms
On partial inverse operations in the class of preradicals of modules
Global invariants of paths and curves for the group of orthogonal transformations in the two-dimensional Euclidean space
On elliptic curves with a closed component passing through a hexagon
Steiner degree distance of two graph products
On a local version of Jack's lemma
Bipartite Graphs Associated with Pell Mersenne and Perrin Numbers
Generalizations of Steffensen's inequality via two-point Abel-Gontscharoff polynomial
On some products in pro-categories and shape categories
Characterizations of generalized exponential trichotomies for linear discrete-time systems
Second Hankel determinant for a class of analytic functions defined by q-derivative operator
Estimates of the Laplacian Spectrum and Bounds of Topological Invariants for Riemannian Manifolds with Boundary
Cubic intuitionistic structures applied to ideals of BCI-algebras
Vanishing ideals over odd cycles