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arXiv 1105.0782math-phmath.ATmath.MPmath.QA
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Grassmann代数中对应于三维和四维Pachner移动的关系

Relations in Grassmann Algebra Corresponding to Three- and Four-Dimensional Pachner Moves

Igor G. Korepanov

摘要:

提出了新的代数关系,涉及反交换Grassmann变量和Berezin积分,并自然地对应于三维和四维的Pachner移动。这些关系是通过实验--使用符号计算机计算--发现的;它们的基本新特征是,尽管它们可以被看作对应于非循环复形的挠率的关系的变形,但它们不再能用这样的术语来解释。在三维的简单情况下,我们定义了一个不变量,根据我们的关系,一个分段线性流形与三角形边界,并提出了实例计算确认其非平凡性。

英文摘要:

New algebraic relations are presented, involving anticommuting Grassmann variables and Berezin integral, and corresponding naturally to Pachner moves in three and four dimensions. These relations have been found experimentally - using symbolic computer calculations; their essential new feature is that, although they can be treated as deformations of relations corresponding to torsions of acyclic complexes, they can no longer be explained in such terms. In the simpler case of three dimensions, we define an invariant, based on our relations, of a piecewise-linear manifold with triangulated boundary, and present example calculations confirming its nontriviality.

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