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Weierstrass representation formula in the group of rigid motions E(2)
(2010-11-02)
In this paper, we prove a Weierstrass representation formula for simply connected immersed
maximal surfaces in E(2). Using the Weierstrass representation we also give a simple
proof of the fact that maximal immersions is ...
A note on Lanczos generalized derivative
(2010-11-02)
Lanczos introduced an integral expression for calculating the derivative of a function, if
this is continuous in the point x under analysis. Here we extend this expression to the case
of a finite discontinuity at x.
Power expansions in terms of shifted Chebyshev-Lanczos polynomials
(2010-11-02)
We exhibit two procedures to express xn in terms of the shifted Chebyshev polynomials,
which is useful to reduce the degree of a polynomial in the interval [ 0, 1 ].
Precubiertas de anillos
(2010-11-01)
En este trabajo se introduce el concepto de precubiertas sobre la clase de los anillos
asociativos con unidad. Se estudia en particular el caso de los cuerpos, como clase importante
desde el punto de vista álgebra - geométrico.
Taxonomy of improvement operators and the problem of minimal change
(2010-05-17)
Improvement operators is a family of belief change operators that is a generalization of usual iterated belief revision operators. The idea is to relax the success property, so the new information is not necessarily
believed ...
Fórmula de conteo para un dominó de tres caras
(2010-05-17)
In this article we obtain a formula that calculates the number of points that is obtained when adding the points of all pieces from a domino game of any size, based on its greatest double piece. Also we found the number ...
The Bishop darboux rotation axis of the spacelike curves with a spacelike principal normal in minkowski 3-space
(2010-05-17)
The Bishop darboux rotation for Spacelike curves with a spacelike Principal Normal in Minkowski 3-space E3 1 is decomposed into two simultaneous rotations. The axes of these
simultaneous rotations are joined by a simple ...