In this note, we show that certain dual canonical basis elements of ℂ[SL m ] are positive when evaluated on k-positive matrices, matrices whose minors size k×k and smaller positive. Skandera showed all can be written in terms Kazhdan–Lusztig immanants, which were introduced by Rhoades Skandera. We focus the expressed immanants indexed 1324- 2143-avoiding permutations. This extends previous work...

Maximilian Amsler,1 Silvana Botti,2 Miguel A. L. Marques,3 Thomas J. Lenosky,4 and Stefan Goedecker1,* 1Department of Physics, Universität Basel, Klingelbergstr. 82, 4056 Basel, Switzerland 2Institut für Festkörpertheorie und -optik, Friedrich-Schiller-Universität Jena and European Theoretical Spectroscopy Facility, Max-Wien-Platz 1, 07743 Jena, Germany 3Institut für Physik, Martin-Luther-Unive...

The feeding of 17 babies weighing less than 1500 g was examined retrospectively. 12 babies started breast feeding at a mean weight of 1324 g and 10 of them were fully breast fed by a mean weight of 1600 g. Their weight gains were comparable with bottle-fed babies receiving expressed breast milk. Practical aspects of breast feeding were considered to be: a knowledgeable maternal and nursing atti...

A record broadly tunable high-power external cavity InAs/GaAs quantum-dot diode laser with a tuning range of 202 nm (1122 nm-1324 nm) is demonstrated. A maximum output power of 480 mW and a side-mode suppression ratio greater than 45 dB are achieved in the central part of the tuning range. We exploit a number of strategies for enhancing the tuning range of external cavity quantum-dot lasers. Di...