2 citations · 3 across the 6 of their papers we have counts for
9 papers
A true single-level reformulation for pessimistic bilevel optimization
Oliver Stein, Alain Zemkoho
We propose a single-level reformulation (SLR) for the pessimistic bilevel optimization problem that does not rely on complementarity conditions or optimal value functions. For this…
Construction of vector-valued adelic automorphic forms
Oliver Stein
We construct an adelic counterpart of Scheithauer's lifting map from scalar-valued modular forms to vector-valued modular forms transforming with the Weil representation. More prec…
A single loop method for quadratic minmax optimization
Stefano Cipolla, Oliver Stein, Alain Zemkoho
We consider a quadratic minmax problem with coupled inner constraints and propose a method to compute a class of stationary points. To motivate the need to compute such stationary…
A converse theorem for Borcherds products and the injectivity of the Kudla-Millson theta lift
Oliver Stein
We prove a converse theorem for the multiplicative Borcherds lift for lattices of square-free level whose associated discriminant group is anisotropic. This can be seen as generali…
Correction and addendum to: The Fourier expansion of Hecke operators for vector-valued modular forms
Oliver Stein
We correct a mistake in \cite{St} leading to erroneous formulas in Theorems 5.2 and 5.4. As an immediate corollary of a formula in \cite{BCJ} we give a formula, which relates the H…
On vector valued automorphic forms for the Weil representation
Oliver Stein
We develop a theory of vector valued automorphic forms associated to the Weil representation and corresponding to vector valued modular forms transforming with the ``finite''…
An Adaptive Sample Size Trust-Region Method for Finite-Sum Minimization
Robert Mohr, Oliver Stein
We propose a trust-region method for finite-sum minimization with an adaptive sample size adjustment technique, which is practical in the sense that it leads to a globally converge…
On Globally Diffeomorphic Polynomial Maps via Newton Polytopes and Circuit Numbers
Tomas Bajbar, Oliver Stein
In this article we analyze the global diffeomorphism property of polynomial maps by studying the properties of the Newton polytopes at infin…
The Weil representation and Hecke operators for vector valued modular forms
Jan H. Bruinier, Oliver Stein
We define Hecke operators on vector valued modular forms transforming with the Weil representation associated to a discriminant form. We describe the properties of the correspondin…