Journal of Siberian Federal University. Mathematics & Physics / Discriminant and Singularities of Logarithmic Gauss Map, Examples and Application

Full text (.pdf)
Issue
Journal of Siberian Federal University. Mathematics & Physics. 2013 6 (1)
Authors
Martin, Bernd; Pochekutov, Dmitry Yu.
Contact information
Martin, Bernd: Institute of Mathematics, Brandenburg University of Technology Cottbus , PF 101344, 03013 Cottbus Germany , e-mail: ; Pochekutov, Dmitry Yu.: Institute of Core Undergraduate Programmes, Siberian Federal University , Svobodny, 79, Krasoyarsk, 660041, Russia , e-mail:
Keywords
logarithmic Gauss map; singularities; discriminant; asymptotics; hypersurface amoeba
Abstract

The study of hypersurfaces in a torus leads to the beautiful zoo of amoebas and their contours, whose possible configurations are seen from combinatorical data. There is a deep connection to the logarithmic Gauss map and its critical points. The theory has a lot of applications in many directions. In this report we recall basic notions and results from the theory of amoebas, show some connection to algebraic singularity theory and consider some consequences from the well known classification of singularities to this subject. Moreover, we have tried to compute some examples using the computer algebra system Singular and discuss different possibilities and their effectivity to compute the critical points. Here we meet an essential obstacle: Relevant examples need real or even rational solutions, which are found only by chance. We have tried to unify different views to that subject.

Pages
74-85
Paper at repository of SibFU
https://elib.sfu-kras.ru/handle/2311/8891