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In mathematics, given an additive subgroup , the Novikov ring of is the subring of consisting of formal sums such that and . The notion was introduced by Sergei Novikov in the papers that initiated the generalization of Morse theory using a closed one-form instead of a function. The notion is used in quantum cohomology, among the others.

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  • Anneau de Novikov (fr)
  • Novikov ring (en)
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  • En mathématiques, un anneau de Novikov est un certain type d'anneau commutatif unitaire constitué de séries formelles. Il existe plusieurs notions reliées mais différentes d'anneau de Novikov. Sa première définition fut introduite par S. P. Novikov dans un article qui a initié la généralisation de la théorie de Morse utilisant une 1-forme différentielle fermée au lieu d'une fonction de Morse. Les définitions subséquentes furent introduites dans un contexte de cohomologie de Floer puis dans un contexte de cohomologie quantique. (fr)
  • In mathematics, given an additive subgroup , the Novikov ring of is the subring of consisting of formal sums such that and . The notion was introduced by Sergei Novikov in the papers that initiated the generalization of Morse theory using a closed one-form instead of a function. The notion is used in quantum cohomology, among the others. (en)
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  • En mathématiques, un anneau de Novikov est un certain type d'anneau commutatif unitaire constitué de séries formelles. Il existe plusieurs notions reliées mais différentes d'anneau de Novikov. Sa première définition fut introduite par S. P. Novikov dans un article qui a initié la généralisation de la théorie de Morse utilisant une 1-forme différentielle fermée au lieu d'une fonction de Morse. Les définitions subséquentes furent introduites dans un contexte de cohomologie de Floer puis dans un contexte de cohomologie quantique. (fr)
  • In mathematics, given an additive subgroup , the Novikov ring of is the subring of consisting of formal sums such that and . The notion was introduced by Sergei Novikov in the papers that initiated the generalization of Morse theory using a closed one-form instead of a function. The notion is used in quantum cohomology, among the others. The Novikov ring is a principal ideal domain. Let S be the subset of consisting of those with leading term 1. Since the elements of S are unit elements of , the localization of with respect to S is a subring of called the "rational part" of ; it is also a principal ideal domain. (en)
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