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Consider a local chain Differential Graded algebra, such as the singular chain complex of a pathwise connected topological group. In two previous papers, a number of homological results were proved for such an algebra: An Amplitude…

Rings and Algebras · Mathematics 2008-01-11 Anders J. Frankild , Peter Jorgensen

In this paper we construct a graded universal enveloping algebra of a $G$-graded Lie algebra, where $G$ is not necessarily an abelian group. If the grading group is abelian, then it coincides with the classical construction. We prove the…

Rings and Algebras · Mathematics 2024-02-06 Felipe Yukihide Yasumura

We determine all the ideals of the homological Goldman Lie algebra, which reflects the structure of an oriented surface.

Geometric Topology · Mathematics 2012-07-18 Kazuki Toda

In this paper, we study the strong convergence of an algorithm to solve the variational inequality problem which extends(Thong et al, Numerical Algorithms. 78, 1045-1060 (2018)). We have reduced and refined some of their algorithm's…

Numerical Analysis · Mathematics 2021-05-11 Mostafa Ghadampour , Donal O'Regan , Ebrahim Soori , Ravi. p. Agarwal

In this paper, we study geometric properties of quotient spaces of proper Lie groupoids. First, we construct a natural stratification on such spaces using an extension of the slice theorem for proper Lie groupoids of Weinstein and Zung.…

Differential Geometry · Mathematics 2015-03-17 M. J. Pflaum , H. Posthuma , X. Tang

Linear vector equations and inequalities are considered defined in terms of idempotent mathematics. To solve the equations, we apply an approach that is based on the analysis of distances between vectors in idempotent vector spaces. The…

Optimization and Control · Mathematics 2013-05-21 Nikolai Krivulin

We consider a homogeneous fractional Sobolev space obtained by completion of the space of smooth test functions, with respect to a Sobolev--Slobodecki\u{\i} norm. We compare it to the fractional Sobolev space obtained by the $K-$method in…

Functional Analysis · Mathematics 2018-06-26 Lorenzo Brasco , Ariel Salort

The dual Gromov-Hausdorff propinquity is a generalization of the Gromov-Hausdorff distance to the class of Leibniz quantum compact metric spaces, designed to be well-behaved with respect to C*-algebraic structures. In this paper, we present…

Operator Algebras · Mathematics 2018-03-20 Frederic Latremoliere

The aim of this paper is to extend the notion of bialgebra for Leibniz algebras (and Lie algebras) to $3$-Leibniz algebras (and $3$-Lie algebras) by use of the cohomology complex of $3$-Leibniz algebras. Also, some theorems about Leibniz…

Rings and Algebras · Mathematics 2017-10-19 A. Rezaei-Aghdam , L. Sedghi-Ghadim

We exhibit a natural Lie algebra structure on the graded space of cyclic coinvariants of a symplectic vector space.

Rings and Algebras · Mathematics 2007-05-23 Eugene Kushnirsky , Michael Larsen

In this study we consider the problem of triangulated graphs. Precisely we give a necessary and sufficient condition for a graph to be triangulated. This give an alternative characterization of triangulated graphs. Our method is based on…

Combinatorics · Mathematics 2018-11-21 R. Gargouri , H. Najar

The 2-parameter family of certain homogeneous Lorentzian 3-manifolds which includes Minkowski 3-space and anti-de Sitter 3-space is considered. Each homogeneous Lorentzian 3-manifold in the 2-parameter family has a solvable Lie group…

Differential Geometry · Mathematics 2015-03-24 Sungwook Lee

We describe an algorithm for computing Macaulay dual spaces for multi-graded ideals. For homogeneous ideals, the natural grading is inherited by the Macaulay dual space which has been leveraged to develop algorithms to compute the Macaulay…

Commutative Algebra · Mathematics 2023-10-19 Joseph Cummings , Jonathan Hauenstein

We present a logic for reasoning about graded inequalities which generalizes the ordinary inequational logic used in universal algebra. The logic deals with atomic predicate formulas of the form of inequalities between terms and formalizes…

Logic in Computer Science · Computer Science 2015-03-24 Vilem Vychodil

We introduce a "workable" notion of degree for non-homogeneous polynomial ideals and formulate and prove ideal theoretic B\'ezout Inequalities for the sum of two ideals in terms of this notion of degree and the degree of generators. We…

Symbolic Computation · Computer Science 2017-01-17 Amir Hashemi , Joos Heintz , Luis Miguel Pardo , Pablo Solernó

In the article we prove some inequalities that contain relations between altitudes and medians in triangle. At least one of these inequalities has not been considered in the literature before and the main theorem has also not been proved…

Metric Geometry · Mathematics 2008-11-18 Zhivko Zhelev

We generalize Hirzebruch's computation of the signature of equal rank homogeneous spaces to a large class of biquotients.

Differential Geometry · Mathematics 2020-07-03 Oliver Goertsches , Maximilian Schmitt

We prove that uniform random triangulations whose genus is proportional to their size $n$ have diameter of order $\log n$ with high probability. We also show that in such triangulations, the distances between most pairs of points differ by…

Probability · Mathematics 2023-11-08 Thomas Budzinski , Guillaume Chapuy , Baptiste Louf

In this paper, we provide a combinatorial criteria for equigenerated monomial ideals in three variables to have linear resolutions. As a consequence, we prove that in three variables, equigenerated monomial ideals with linear resolutions…

Commutative Algebra · Mathematics 2025-09-22 Hoài Đào , Sreehari Suresh-Babu

A fundamental result in linear algebra states that if a homogenous linear equation system has only the trivial solution, then there are at most as many variables as equations. We prove the following generalisation of this phenomenon. If a…

Combinatorics · Mathematics 2022-11-24 J. Pascal Gollin , Attila Joó