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arXiv 2202.04508math.DGmath.GT
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叶状流形上的Morse-Novikov上同调

Morse-Novikov cohomology on foliated manifolds

Md. Shariful Islam

摘要:

流形的Lichnerowicz或Morse-Novikov上同调群的概念已被许多研究者用来研究流形的重要性质和不变量。Morse-Novikov上同调是使用微分$d_ω=d+ω\wedge$定义的,其中$ω$是闭合的$1$ -形式。本文研究了流形上相对于叶理的Morse-Novikov上同调及其同伦不变性,并将其推广到更一般的黎曼叶理形式。研究了约化叶Morse-Novikov复形上相应的微分算子的Laplacian和Hodge分解.在黎曼叶理的情形下,证明了约化的叶Morse-Novikov上同调群满足Hodge定理和Poincar{é}对偶.由此产生的同构产生一个霍奇钻石结构的叶Morse-Novikov上同调。

英文摘要:

The idea of Lichnerowicz or Morse-Novikov cohomology groups of a manifold has been utilized by many researchers to study important properties and invariants of a manifold. Morse-Novikov cohomology is defined using the differential $d_ω=d+ω\wedge$, where $ω$ is a closed $1$-form. We study Morse-Novikov cohomology relative to a foliation on a manifold and its homotopy invariance and then extend it to more general type of forms on a Riemannian foliation. We study the Laplacian and Hodge decompositions for the corresponding differential operators on reduced leafwise Morse-Novikov complexes. In the case of Riemannian foliations, we prove that the reduced leafwise Morse-Novikov cohomology groups satisfy the Hodge theorem and Poincar{é} duality. The resulting isomorphisms yield a Hodge diamond structure for leafwise Morse-Novikov cohomology.

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