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math.AG2000
Surfaces with triple points
Stephan Endraß, Ulf Persson, Jan Stevens
In this paper we compute upper bounds for the number of ordinary triple points on a hypersurface in and give a complete classification for degree six (degree four or less is…
math.AG1999
Standard bases with respect to the Newton filtration
Stephan Endrass
The aim of this article is to introduce standard bases of ideals in polynomial rings with respect to a class of orderings which are not necessarily semigroup orderings. Our approac…
math.AG1998
On the divisor class group of double solids
Stephan Endrass
For a double solid branched over a surface with only ordinary nodes as singularities, we give a set of generators of the divisor class group $Pic(\t…