Moscow-Petersburg seminar on low-dimensional mathematics
Friday, February 7, 2003, 16:00, room 311, PDMI

Low-dimensional fibers of real polynomial mappings
G.Khimshiashvili (Tbilisi--Lodz)

We describe some effective methods of topological investigation
of the fibers of proper real polynomial mappings.
It will be shown that in many cases such information can be obtained
from algebraic formulas for the Euler characteristic.
Using this, we study some low dimensional configuration spaces
of planar graphs.
In particular, we obtain a new proof of the well known
topological classification of configuration spaces of planar pentagons.

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Seminar home-page  http://www.pdmi.ras.ru/~lowdimma