Communications in Mathematical Physics

, Volume 133, Issue 2, pp 369–382 | Cite as

Summability method for a Horn-Shaped region

  • Alexander Moroz


A formulation of the Nevanlinna-like theorem for a horn-shaped region is given. Product of functions obeying the hypotheses of the theorem is also shown to obey these hypotheses, i.e. the summability mechanism preserves nonlinear perturbative conditions such as unitarity of the Feynman series.


Neural Network Statistical Physic Complex System Nonlinear Dynamics Quantum Computing 
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Copyright information

© Springer-Verlag 1990

Authors and Affiliations

  • Alexander Moroz
    • 1
  1. 1.Institute of Physics ČSAVPrague 8Czechoslovakia

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