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83 papers · 1 filter
Hedging, arbitrage and optimality with superlinear frictions
Paolo Guasoni, Miklós Rásonyi
In a continuous-time model with multiple assets described by càdlàg processes, this paper characterizes superhedging prices, absence of arbitrage, and utility maximizing strategies…
Spectral Sparsification and Regret Minimization Beyond Matrix Multiplicative Updates
Zeyuan Allen-Zhu, Zhenyu Liao, Lorenzo Orecchia
In this paper, we provide a novel construction of the linear-sized spectral sparsifiers of Batson, Spielman and Srivastava [BSS14]. While previous constructions required r…
Recovering vector displacement estimates in quasistatic elastography using sparse relaxation of the momentum equation
Olalekan A. Babaniyi, Assad A. Oberai, Paul E. Barbone
We consider the problem of estimating the vector displacement field in a heterogeneous elastic solid deforming under plane stress conditions. The problem is motivated by appli…
Conjugate adaptive optics in widefield microscopy with an extended-source wavefront sensor
Jiang Li, Devin R. Beaulieu, Hari Paudel +3
Adaptive optics is a strategy to compensate for sample-induced aberrations in microscopy applications. Generally, it requires the presence of "guide stars" in the sample to serve a…
The Transitional Disk around IRAS 04125+2902
C. Espaillat, S. Andrews, D. Powell +4
Resolved submillimeter imaging of transitional disks is increasingly revealing the complexity of disk structure. Here we present the first high-resolution submillimeter image of a…
High-throughput Imaging of Self-luminous Objects through a Single Optical Fiber
Roman Barankov, Jerome Mertz
Imaging through a single optical fiber offers attractive possibilities in many applications such as microendoscopy or remote sensing. However, the direct transmission of an image t…