1,159 research outputs found
New examples of constant mean curvature surfaces in and
We construct non-zero constant mean curvature H surfaces in the product
spaces and by
using suitable conjugate Plateau constructions. The resulting surfaces are
complete, have bounded height and are invariant under a discrete group of
horizontal translations. In (for any ) or
(for ), a 1-parameter family of
unduloid-type surfaces is obtained, some of which are shown to be compact in
. Finally, in the case of in
, the constructed examples have the symmetries
of a tessellation of by regular polygons.Comment: 22 pages, 5 figure
Fir system identification using a linear combination of cumulants
A general linear approach to identifying the parameters of a moving average (MA) model from the statistics of the output is developed. It is shown that, under some constraints, the impulse response of the system can be expressed as a linear combination of cumulant slices. This result is then used to obtain a new well-conditioned linear method to estimate the MA parameters of a nonGaussian process. The proposed approach does not require a previous estimation of the filter order. Simulation results show improvement in performance with respect to existing methods.Peer ReviewedPostprint (published version
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