Results 11 to 20 of about 698,644 (287)
The Projective Geometry of Freudenthal's Magic Square
Journal of Algebra, 2001 We connect the algebraic geometry and representation theory associated to Freudenthal's magic square. We give unified geometric descriptions of several classes of orbit closures, describing their hyperplane sections and desingularizations, and interpreting them in terms of composition algebras.
J. M. Landsberg, Laurent Manivel
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Sums of Squares: A Real Projective Story
Notices of the American Mathematical Society, 2021 The relationship between nonnegative polynomials and sums of squares is one of the central questions in real algebraic geometry. A modern approach is to look at nonnegative polynomials and sums of squares on a real variety. We survey the rich history of this area and focus on recent developments highlighting unexpected links to complex algebraic ...
Grigoriy Blekherman +3 more
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ON THE SYMMETRIC SQUARES OF COMPLEX AND QUATERNIONIC PROJECTIVE SPACE [PDF]
Glasgow Mathematical Journal, 2018 AbstractThe problem of computing the integral cohomology ring of the symmetric square of a topological space has long been of interest, but limited progress has been made on the general case until recently. We offer a solution for the complex and quaternionic projective spaces$\mathbb{K}$Pn, by utilising their rich geometrical structure.
Yumi Boote, Nigel Ray
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Projective least-squares: Global solutions with local optimization [PDF]
2009 IEEE Conference on Computer Vision and Pattern Recognition, 2009 Work in multiple view geometry has focused on obtaining globally optimal solutions at the price of computational time efficiency. On the other hand, traditional bundle adjustment algorithms have been found to provide good solutions even though there may be multiple local minima.
Carl Olsson +2 more
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Fast Projected Bispectra: the filter-square approach [PDF]
The Open Journal of AstrophysicsThe study of third-order statistics in large-scale structure analyses has been hampered by the increased complexity of bispectrum estimators (compared to power spectra), the large dimensionality of the data vector, and the difficulty in estimating its covariance matrix. In this paper we present the filtered-squared bispectrum (FSB), an estimator of the
Lea Harscouet +6 more
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Orthogonal Projection and Total Least Squares [PDF]
Numerical Linear Algebra with Applications, 1993 AbstractOverdetermined linear systems often arise in applications such as signal processing and modern communication. When the overdetermined system of linear equations AX ≈︁ B has no solution, compatibility may be restored by an orthogonal projection method. The idea is to determine an orthogonal projection matrix P by some method M such that [Ã B̃] =
James R. Bunch, Ricardo D. Fierro
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Projectivity of the Whitehead square [PDF]
Proceedings of the American Mathematical Society, 1973 We show that the Whitehead square of the generator of π n ( S n ) {\pi _n}({S^n}) is not a projective homotopy class for any integer n n with neither n n or n
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Journal of Medical Case Reports, 2017 Background Sarcomas are a rare type of breast malignancies and malignant peripheral nerve sheath tumors of the breast are even rarer. There are no specific clinical and radiological features for the diagnosis of this tumor and histological features are ...
Md Shuayb, Rabeya Begum
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Square inventories: the R.I.Ca.Bi.M project. Balances and methodologies
Bibliothecae.it, 2016 The experience matured at SISMEL for the creation of database and printed census R.I.Ca.Bi.M (Repertory of Inventories and Catalogues of Medieval Libraries from the VIth Century to 1520) allows to do some methodological remarks about: international state
Giovanni Fiesoli
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PLoS ONE, 2021 This study has aimed to investigate the impact of sustainable project management on sustainable project planning and success in manufacturing firms. Data was collected from project management professionals in a manufacturing firm in Malaysia.
Tay Chze Chow +5 more
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