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In mathematics, the Lelong number is an invariant of a point of a complex analytic variety that in some sense measures the local density at that point. It was introduced by Lelong. More generally a closed positive (p,p) current u on a complex manifold has a Lelong number n(u,x) for each point x of the manifold. Similarly a plurisubharmonic function also has a Lelong number at a point.

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  • Lelong-Zahl (de)
  • Lelong number (en)
  • Número de Lelong (pt)
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  • Lelong-Zahlen sind Invarianten für komplexe Mannigfaltigkeiten sowie Verallgemeinerungen mit Singularitäten. Sie sagt etwas über die lokale Dichte in einem Punkt. Lelong-Zahlen sind das analytische Analogon zur der Algebra und wurden 1957 von Pierre Lelong für Ströme eingeführt. Besonders wichtig sind die Lelong-Zahlen für sogenannte , indem man als Strom setzt, also die Krümmung der zu gehörenden singulären Metrik betrachtet. (de)
  • In mathematics, the Lelong number is an invariant of a point of a complex analytic variety that in some sense measures the local density at that point. It was introduced by Lelong. More generally a closed positive (p,p) current u on a complex manifold has a Lelong number n(u,x) for each point x of the manifold. Similarly a plurisubharmonic function also has a Lelong number at a point. (en)
  • Em matemática, o número de Lelong é um invariante de um ponto de uma variedade analítica complexa que, em certo sentido, mede a densidade local naquele ponto. Foi introduzido por Lelong (1957). Mais geralmente, uma positiva fechada (p,p) u em uma variedade complexa tem um número de Lelong n(u,x) para cada ponto x da variedade. Da mesma forma, uma função plurissubharmônica também possui um número de Lelong em um ponto. (pt)
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  • Lelong-Zahlen sind Invarianten für komplexe Mannigfaltigkeiten sowie Verallgemeinerungen mit Singularitäten. Sie sagt etwas über die lokale Dichte in einem Punkt. Lelong-Zahlen sind das analytische Analogon zur der Algebra und wurden 1957 von Pierre Lelong für Ströme eingeführt. Besonders wichtig sind die Lelong-Zahlen für sogenannte , indem man als Strom setzt, also die Krümmung der zu gehörenden singulären Metrik betrachtet. (de)
  • In mathematics, the Lelong number is an invariant of a point of a complex analytic variety that in some sense measures the local density at that point. It was introduced by Lelong. More generally a closed positive (p,p) current u on a complex manifold has a Lelong number n(u,x) for each point x of the manifold. Similarly a plurisubharmonic function also has a Lelong number at a point. (en)
  • Em matemática, o número de Lelong é um invariante de um ponto de uma variedade analítica complexa que, em certo sentido, mede a densidade local naquele ponto. Foi introduzido por Lelong (1957). Mais geralmente, uma positiva fechada (p,p) u em uma variedade complexa tem um número de Lelong n(u,x) para cada ponto x da variedade. Da mesma forma, uma função plurissubharmônica também possui um número de Lelong em um ponto. Os números de Lelong são particularmente importantes para as chamadas funções plurissubharmônicas , indo como um fluxo de conjuntos , de modo que a curvatura da métrica singular associada a considerada. (pt)
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