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From Philippine Mathematical Olympiad 2009
25 Oct
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- Curvature invariant and generalized canonical operator models - II. (arXiv:1205.5800v1 [math.FA])In [11] the authors investigated a family of quotient Hilbert modules in the Cowen-Douglas class over the unit disk constructed from classical Hilbert modules such as the Hardy and Bergman modules. In this paper we extend the results to the multivariable case of higher multiplicity. Moreover, similarity as well as isomorphism results are obtained.Ronald G. Douglas, Yun-Su Kim, Hyun-Kyoung Kwon, Jaydeb Sarkar
- Relaxed Cech Cohomology, Emeralds over Topological Spaces and the Kontsevich Integral. (arXiv:1205.5818v1 [math.GT])We introduce families of decorations of a same topological space, as well as a family of sheaves over such decorated spaces. Making those families a directed system leads to the concept of emerald over a space. For the configuration space X_N of N points in the plane, connecting points of the plane with chords is a decoration and the sheaf of log differentia […]Renaud Gauthier
- Foreword: A Computable Universe, Understanding Computation and Exploring Nature As Computation. (arXiv:1205.5823v1 [cs.GL])I am most honoured to have the privilege to present the Foreword to this fascinating and wonderfully varied collection of contributions, concerning the nature of computation and of its deep connection with the operation of those basic laws, known or yet unknown, governing the universe in which we live. Fundamentally deep questions are indeed being grappled w […]Roger Penrose
- High-Resolution Finite Volume Modeling of Wave Propagation in Orthotropic Poroelastic Media. (arXiv:1205.5824v1 [math.NA])Poroelasticity theory models the dynamics of porous, fluid-saturated media. It was pioneered by Maurice Biot in the 1930s through 1960s, and has applications in several fields, including geophysics and modeling of in vivo bone. A wide variety of methods have been used to model poroelasticity, including finite difference, finite element, pseudospectral, and d […]Grady I. Lemoine, M. Yvonne Ou, Randall J. LeVeque
- On the isospectral problem of the dispersionless Camassa-Holm equation. (arXiv:1205.5831v1 [math.SP])We discuss direct and inverse spectral theory for the isospectral problem of the dispersionless Camassa-Holm equation, where the weight is allowed to be a finite signed measure. In particular, we prove that this weight is uniquely determined by the spectral data and solve the inverse spectral problem for the class of measures which are sign definite. The res […]Jonathan Eckhardt, Gerald Teschl
Posted by Roy Roque Rivera Jr on October 25, 2010 at 12:55 PM
Yun lang pala yung trick.. heheh, parang nasa dulo na kase nung lapis ko yung “something fishy sa problem” kaya lang hindi ko makita eh… anyway thanks for your elegent solution. Hindi ko na kasi nagalaw yung problem na yan for how many days eh…
Posted by Laplace on October 27, 2010 at 4:00 AM
Galing tlga ni rosa.. idol
Posted by rosapaulina on October 27, 2010 at 7:34 PM
thank you =)
Posted by jd2718 on November 7, 2010 at 9:22 PM
Even after the trick, this one is sneaky. Very nicely shown!
Jonathan