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Semi- orthogonalities of class of Gauss hypergeometric functions
Semi- orthogonalities of class of Gauss hypergeometric functions
(2011-02-11)
We presented three semi-orthogonalities for a class of Gauss hypergeometric functions. We further employ the semi-orthogonalities to generate a theory concerning finite series expansion involving our hypergeometric functions.
Las cuerdas magnéticas
(2009-01-13)
The conception of the magnetic string is presented; it is an infinitely thin bundle of magnetic flux lines. They are surrounded by a film of current that rotates around them, and are a solution of Maxwell’s equations. Their ...
Niveles de radioactividad en tres regiones de Costa Rica
Niveles de radioactividad en tres regiones de Costa Rica
(2011-02-15)
The establishment of the first radioactivity levels of natural radiation was carried out during the period 1991 to 1994 in three different regions of Costa Rica. The radionuclides studied belong to different soil types ...
Acerca de si pudo o no ser el universo anisotrótipico
Acerca de si pudo o no ser el universo anisotrótipico
(2011-02-15)
The theoretical and experimetnal problem concerning the origin and formations of the universe is establish in this paper, specially by developing some theories that try to explain this phenomena, and also to settle the ...
Álgebras-MV artinianas y noetherianas
Álgebras-MV artinianas y noetherianas
(2011-02-11)
We study MV-algebras that satisfacy tha ascending of descending chain conditions on ideals. We demostrarted, for example, if an MV-algebra is artianan, then it has a finite number of minimal prime ideals. We also show the ...
Álgebras-MV artinianas y noetherianas
(2011-02-14)
Estudiamos álgebras-MV que satisfacen las condiciones de cadena ascendente o de cadena descendente por ideales. Por ejemplo, si un álgebra es artiana, entonces tiene un número finito de ideales primos y minimales. También ...
On the right commutativity of loop rings
(2011-02-11)
Its proved that extra loops and central loops are conjugated closed, consequently they are G-loops. It is also proved that extra loops and central loops are M-loops.
Identificación de modelos de orden reducido a partir de la curvatura de reacción del proceso
(2009-01-13)
A general identification procedure is given, for first and second orders plus time delay models, that uses two or three arbitrary points over the process reaction curve. Two simplified versions of the methods are described: ...
Aplicación de la tomografía axial computarizada para la detección de bolsas de humedad en madera seca de gmelina arborea (roxb.)
(2009-01-13)
Due to its excellent growth rate and productivity, Gmelina arborea (Roxb.) is widely used for commercial reforestation in Costa Rica. However during the lumber drying process, the wooden boards show non-uniform values of ...
Lignanos de Zanthoxylum acuminatum
(2009-01-13)
From the aerial parts of Zanthoxylum acuminatum (Rutaceae) collected in Upala, Alajuela, Costa Rica were isolated the known lignans hinokinin, (+)-asarinin, (+)- piperitol, (+)-kobusin, and epi-kobusin. In addition to the ...