Challenging problems on affine -space
Classes of commutative rings characterized by going-up and going-down behavior
Clusters of infinitely near points.
Cohen-Macaulay-Punkte auf lokal geringten Räumen und Anwendungen in der Schnittheorie
Conjugation of Kuga fiber varieties.
Connectedness Properties of Polynomial Maps Between Affine Spaces.
Correction and Complements to "On the Symmetric and Rees Algebras of an Ideal"
Correction to “On the purity of the branch locus”