Valuations in fields of power series.

Francisco Javier Herrera Govantes; Miguel Angel Olalla Acosta; José Luis Vicente Córdoba

Displaying similar documents to “Valuations in fields of power series.”

Nonvariational layer potentials with respect to Hölder continuous vector fields.

G. C. Verchota (2007)

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A characterization of isochronous centres in terms of symmetries.

Emilio Freire, Gasull, Armengol, Guillamon, Antoni 2 (2004)

Revista Matemática Iberoamericana

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We present a description of isochronous centres of planar vector fields X by means of their groups of symmetries. More precisely, given a normalizer U of X (i.e., [X,U]= µ X, where µ is a scalar function), we provide a necessary and sufficient isochronicity condition based on µ. This criterion extends the result of Sabatini and Villarini that establishes the equivalence between isochronicity and the existence of commutators ([X,U]= 0). We put also special emphasis on the mechanical aspects...

Quasinormal families of meromorphic functions.

Xuecheng Pang, Shahar Nevo, Lawrence Zalcman (2005)

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A partial regularity result for a class of stationary Yang-Mills in high dimension.

Yves Meyer, Tristan Rivière (2003)

Revista Matemática Iberoamericana

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We prove, for arbitrary dimension of the base n greater than or equal to 4, stationary Yang-Mills Fields satisfying Borne approximability property are regular apart from a closed subset of the base having zero (n-4)- Hausdorff measure.