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- University of UtahUS17 papers
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6 papers · 1 filter
Threefolds with Vanishing Hodge Cohomology
Jing Zhang
We consider algebraic manifolds of dimension 3 over with for all and . Let be a smooth completion of with , an effecti…
Nonlinear internal models for output regulation
C. I. Byrnes, A. Isidori
In this paper we show how nonlinear internal models can be effectively used in the design of output regulators for nonlinear systems. This result provides a significant enhancement…
Optical Properties of Complex Dust Grains
A. C. Andersen, J. A. Sotelo, G. A. Niklasson +1
Dust particles in space may appear as clusters of individual grains. The morphology of these clusters could be of a fractal or more compact nature. To investigate how the cluster m…
Effects of nuclear fragmentation on single particle and collective motions at low energy
C. Barbieri, W. H. Dickhoff
The Faddeev technique is employed to study the influence of both particle-particle and particle-hole phonons on the one-hole spectral function of 16O. The formalism includes the ef…
Tits alternative for closed real analytic 4-manifolds of nonpositive curvature
Xiangdong Xie
We study subgroups of fundamental groups of real analytic closed 4-manifolds with nonpositive sectional curvature. In particular, we are interested in the following question: if a…
A sum-product estimate in finite fields, and applications
Jean Bourgain, Nets Katz, Terence Tao
Let be a subset of a finite field for some prime . If for some , then we prove the estimate $|A+A| + |A.A| \geq c(δ) |A|^{1+\eps…