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arXiv 1602.01592math.RTmath.RA
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部分三角剖分代数

Algebras of partial triangulations

Laurent Demonet

摘要:

我们引入了两类来自标记曲面的部分三角剖分的代数。第一个,称为冻结代数的部分三角剖分,一般是无限秩,并包含冻结雅可比代数的三角剖分的标记表面。第二个,所谓的代数的部分三角,总是(明确)有限秩,并包含经典的Jacobian代数的三角标记的表面和布劳尔图代数。我们对部分三角剖分进行了分类,这取决于它们的冻结代数的复杂性(一些是有限秩的,一些是形式幂级数环上的格,并且大多数不是在它们的中心上生成的)。对于部分三角剖分代数,我们证明了当曲面没有边界时,它们是对称的。从一个更代表性的理论的角度来看,我们证明了这些代数的部分三角剖分驯服的代表性类型,我们定义了一个组合操作的部分三角剖分,推广Kauer移动的Brauer图和翻转的三角剖分,这给出了相应的代数导出等价。

英文摘要:

We introduce two classes of algebras coming from partial triangulations of marked surfaces. The first one, called frozen algebra of a partial triangulation, is generally of infinite rank and contains frozen Jacobian algebras of triangulations of marked surfaces. The second one, called algebra of a partial triangulation, is always of (explicit) finite rank and contains classical Jacobian algebras of triangulations of marked surfaces and Brauer graph algebras. We classify the partial triangulations, depending on the complexity of their frozen algebras (some are free of finite rank, some are lattices over a formal power series ring and most of them are not finitely generated over their centre). For algebras of partial triangulations, we prove that they are symmetric when the surface has no boundary. From a more representation theoretical point of view, we prove that these algebras of partial triangulations are of tame representation type and we define a combinatorial operation on partial triangulation, generalizing Kauer moves of Brauer graphs and flips of triangulations, which give derived equivalences of the corresponding algebras.

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