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- Huishi Li
- 2008

Let A = KX 1 , ..., X n /G be a K-algebra defined by a finite Gröbner basis G. It is shown how to use the Ufnarovski graph Γ(LM(G)) and the graph of n-chains Γ C (LM(G)) to calculate gl.dimG N (A) and gl.dim A, where

Let K be a field and R = ⊕ p∈N R p an N-graded K-algebra, which has an SM K-basis (i.e. a skew multiplicative K-basis) such that R holds a Gröbner basis theory. It is proved that there is a one-to-one correspondence between the set of Gröbner bases in R and the set of dh-closed homogeneous Gröbner bases in the polynomial algebra R[t]; and that the similar… (More)

- Huishi Li
- The Computer Science Journal of Moldova
- 2014

In terms of their defining relations, solvable polynomial algebras introduced by Kandri-Rody and Weispfenning [J. Symbolic Comput., 9(1990)] are characterized by employing Gröbner bases of ideals in free algebras, thereby solvable polynomial algebras are completely determinable and constructible in a computational way.

- Huishi Li
- J. Symb. Comput.
- 2010

- Huishi Li
- 2009

By employing the (de)homogenization technique in a relatively extensive setting, this note studies in detail the relation between non-homogeneous Gröbner bases and homogeneous Gröbner bases. As a consequence , a general principle of computing Gröbner bases (for an ideal and its homogenization ideal) by passing to homogenized generators is clarified… (More)

- Huishi Li
- 2009

Let R be an arbitrary commutative ring and RX = RX 1 ,. the free algebra of n generators over R. Note that Bergman's diamond lemma characterizes the resolvability of ambiguities of monic relations of the form W σ − f σ with f σ a linear combination of monomials ≺ W σ , where ≺ is a semigroup partial ordering on X; and that in the algorithmic language of… (More)

- Huishi Li
- 2008

In this paper, we introduce (almost) skew 2-nomial algebras, establish the existence of a skew multiplicative K-basis for a skew 2-nomial algebra, and explore the existence of a Gröbner basis theory for such algebras. Let K be a field, and let R be a finitely generated free K-algebra, or a path algebra defined by a finite directed graph over K. Then it is… (More)

- Huishi Li
- 2007

Let K be an infinite field and KX = KX 1 , ..., X n the free associative algebra generated by X = {X 1 , ..., X n } over K. It is proved that if I is a two-sided ideal of KX such that the K-algebra A = KX/I is almost commutative in the sense of [3], namely, with respect to its standard N-filtration F A, the associated N-graded algebra G(A) is commutative,… (More)

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