3 papers
math.GR2018
Automatic Logarithm and Associated Measures
Rostislav Grigorchuk, Roman Kogan, Yaroslav Vorobets
We introduce the notion of the Automatic Logarithm with the purpose of studying the expanding properties of Schreier graphs of action of the g…
math.AG2013
Metric Estimates and Membership Complexity for Archimedean Amoebae and Tropical Hypersurfaces
Martin Avendano, Roman Kogan, Mounir Nisse +1
Given any complex Laurent polynomial , is the image of its complex zero set under the coordinate-wise log absolute value map. We give an efficiently constru…
math.GT2008
On a Basis for the Framed Link Vector Space Spanned by Chord Diagrams
B. Bischof, R. Kogan, D. N. Yetter
In view of the result of Kontsevich, now often called ``the fundamental theorem of Vassiliev theory'', identifying the graded dual of the associated graded vector space to the spac…