arXiv subjects

Christine von Renesse

Publications and source records attributed to Christine von Renesse.

2 recordsLinked to original sources

arXiv2023

Two examples of ungrading in higher education from the United States and from Germany

In this paper the authors discuss their experiences with ungrading at a small public university in the U.S. as well as a large public university in Germany. The courses described are Calculus 1, Mathematics for Liberal Arts, and courses for pre-service secondary teachers of mathematics. We outline and compare our approaches, discuss student performance and feedback and present some interesting patterns relating to gender. A shortened and revised version of this paper appeared in PRIMUS 33 (2023), no. 9, 1035-1054, DOI: 10.1080/10511970.2023.2229819.

math.HO↗

arXiv2008

Primitive Collections and Toric Varieties

This paper studies Batyrev's notion of primitive collection. We use primitive collections to characterize the nef cone of a quasi-projective toric variety whose fan has convex support, a result stated without proof by Batyrev in the smooth projective case. When the fan is non-simplicial, we modify the definition of primitive collection and explain how our definition relates to primitive collections of simplicial subdivisons. The paper ends with some open problems.

math.AG↗