Displaying 41 – 60 of 202

Showing per page

Solutions of hypersingular integral equations over circular domains by a spectral method

Farina, Leandro, Ziebell, Juliana S. (2013)

Applications of Mathematics 2013

The problem of a solving a class of hypersingular integral equations over the boundary of a nonplanar disc is considered. The solution is obtained by an expansion in basis functions that are orthogonal over the unit disc. A Fourier series in the azimuthal angle, with the Fourier coefficients expanded in terms of Gegenbauer polynomials is employed. These integral equations appear in the study of the interaction of water waves with submerged thin plates.

Some comments on the diversity of Vermeer paintings depicted on postage stamps

Oskar Maria Baksalary, George P.H. Styan (2008)

Discussiones Mathematicae Probability and Statistics

We present some comments on the diversity of the paintings by Johannes Vermeer (1632-1675) depicted on postage stamps. We have found 20 of the 36 "recognized" Vermeer paintings depicted on postage stamps issued by 29 "countries"; by country we mean here a stamp-issuing region that issues or has issued its own postage stamps. We apply Fisher's α index of biodiversity [11] to compare the diversity of Vermeer paintings depicted on postage stamps with the diversity of two other data sets [26]. We illustrate...

Some examples of homogeneous Einstein manifolds

Rodionov, E. D. (1993)

Proceedings of the Winter School "Geometry and Physics"

The author obtains the classification of all invariant Einstein metrics on the following homogeneous spaces: S U ( 3 ) / T max , S p ( 3 ) / S p ( 1 ) × S p ( 1 ) × S p ( 1 ) , F 4 / spin ( 8 ) , S U ( 5 ) / S p ( 2 ) × T 1 . Combining this with the results of other authors, the classification of all invariant Einstein metrics on all compact simply connected homogeneous spaces admitting a homogeneous Riemannian metric of positive sectional curvature is obtained.

Currently displaying 41 – 60 of 202