We consider inference about a scalar coefficient in a linear regression model. One previously considered approach to dealing with many controls imposes sparsity, that is, it is assumed known that nearly all control coefficients are (very nearly) zero. We instead impose a bound on the quadratic...

Die durch das SARS-CoV-2 Virus verursachte COVID-19-Pandemie hat erhebliche Mängel bei der Erfassung und Dokumentation des Sterblichkeitsgeschehens in Deutschland offenbart. Die bestehenden Mängel schaden kurz- und langfristig dem Schutz der in Deutschland lebenden Menschen nicht nur gegen...

This paper estimates a common component in many price series that has an equiproportional effect on all prices. Changes in this component can be interpreted as changes in the value of the numeraire since, by definition, they leave all relative prices unchanged. The first aim of the paper is to...