2 citations · 3 across the 2 of their papers we have counts for
2 papers
math.AT2011★ 1 cited
On intersections of closed curves on surfaces
Semeon A. Bogatyi, Elena A. Kudryavtseva, Heiner Zieschang
The problem on the minimal number (with respect to deformation) of intersection points of two closed curves on a surface is solved. Following the Nielsen approach, we define classe…
math.GR2009★ 2 cited
Some quadratic equations in the free group of rank 2
Daciberg Goncalves, Elena Kudryavtseva, Heiner Zieschang
For a given quadratic equation with any number of unknowns in any free group F, with right-hand side an arbitrary element of F, an algorithm for solving the problem of the existenc…