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51 papers · 1 filter
Super-Resolution Compressed Sensing: A Generalized Iterative Reweighted L2 Approach
Jun Fang, Huiping Duan, Jing Li +2
Conventional compressed sensing theory assumes signals have sparse representations in a known, finite dictionary. Nevertheless, in many practical applications such as direction-of-…
Infinitesimal rigidity of collapsed gradient steady Ricci solitons in dimension three
Huai-Dong Cao, Chenxu He
The only known example of collapsed three-dimensional complete gradient steady Ricci solitons so far is the 3D cigar soliton , the product of Hamilton's cigar…
Constraints on the origin of the first light from SN2014J
A. Goobar, M. Kromer, R. Siverd +6
We study the very early lightcurve of supernova 2014J (SN 2014J) using the high-cadence broad-band imaging data obtained by the Kilodegree Extremely Little Telescope (KELT), which…
HIPAD - A Hybrid Interior-Point Alternating Direction algorithm for knowledge-based SVM and feature selection
Zhiwei Qin, Xiaocheng Tang, Ioannis Akrotirianakis +1
We consider classification tasks in the regime of scarce labeled training data in high dimensional feature space, where specific expert knowledge is also available. We propose a ne…
Observations of the M82 SN 2014J with the Kilodegree Extremely Little Telescope
Robert J. Siverd, Ariel Goobar, Keivan G. Stassun +1
We report observations of the bright M82 supernova 2014J serendipitously obtained with the Kilodegree Extremely Little Telescope (KELT). The SN was observed at high cadence for ove…
Curvature Estimates for Four-Dimensional Gradient Steady Ricci Solitons
Huai-Dong Cao, Xin Cui
In this paper, we derive certain curvature estimates for 4-dimensional gradient steady Ricci solitons either with positive Ricci curvature or with scalar curvature decay.