On the asymptotic behaviour of some sequences of polynomials generated by second order linear recurrence relations.
Some birational maps of Fano 3-folds
Funciones No-Estandar Y Teoria De Distribuciones.
Transformadas De Poisson De Funciones No-Estandares.
Densidad de los operadores de Schatten en un espacio de Hilbert
Formula asintotica de la Funcion ...
Representación de los números no vonvencionales mediante operadores hermíticos
Estabilidad de la función ...
Convergencia de sucesiones dadas por fórmulas de recurencia de primer orden
Limite De La Serie ....... Cuando .......
Desarrollo asintótico de ...
Una representacion de la transformacion de Hankel
A Correspondence between Hopf Ideals and Sub-Hopf Algebras.
On the Structure of Commutative Affine Group Schemes over a Non-Perfect Field.
Genus number and l-Rank of Genus Group of cyclic extensions of Degree l.
An effective lower bound for a certain exponential function
Microlocal boundary value problem in higher codimensions
Quantitative results of algebraic independence and Baker's method
Symétrisations indépendantes du temps pour certains opérateurs du type de Schrödinger. I
Si danno condizioni sufficienti e condizioni necessarie affinché il problema di Cauchy per alcuni operatori di tipo Schrödinger sia ben posto in spazi di Sobolev. Gli operatori qui considerati sono operatori di Schrödinger con potenziali vettoriali complessi, una generalizzazione degli operatori di 2-evoluzione nel senso di Petrowsky, e alcuni sistemi tipo Leray-Volevich di operatori lineari a derivate parziali. Il metodo che usiamo in questo articolo è la simmetrizazione degli operatori non dipendenti...
Surfaces which contain many circles
We survey the results on surfaces which contain many circles. First, we give two analyses of shapes which always look round. Then we introduce the Blum conjecture: “A closed surface in E³ which contains seven circles through each point is a sphere”, and give some partial affirmative results toward the conjecture. Moreover, we study some surfaces which contain many circles through each point, for example, cyclides.
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