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1. |
A Generalization of a theorem of chang |
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Communications in Algebra,
Volume 23,
Issue 12,
1995,
Page 4333-4342
M. Domokos,
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摘要:
Szigeti, Tuza and Révész have developed a method in [6] to obtain polynomial identities for the n×n matrix ring over a commutative ring starting from directed Eulerian graphs. These polynomials are called Euler-ian. In the first part of this paper we show some polynomials that are in the T-ideal generated by a certain set of Eulerian polynomials, hence we get some identities of the n×n matrices. This result is a generalization of a theorem of Chang [l]. After that, using this theorem, we show that any Eulerian identity arising from a graph which lias d-fold multiple edges follows from the standard identity of degree d
ISSN:0092-7872
DOI:10.1080/00927879508825467
出版商:Marcel Dekker, Inc.
年代:1995
数据来源: Taylor
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2. |
Transformation d'halphen |
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Communications in Algebra,
Volume 23,
Issue 12,
1995,
Page 4343-4364
Josse Alfrederic,
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PDF (684KB)
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摘要:
We give a modern version of the following result of Halphen: “degrees and classes of successive evolutes of a plane algebraic curve form two arithmetic progressions of the same ratio after a sufficient number of iterations”. The iteration of this transform provides adesingularisationprocess (branch by branch) of plane curves, different to the Nash transform and the Noether process. To prove these two points,we introduce systematically Puiseux's exponents, semi-groups of exponents and use elimination and duality formulae.
ISSN:0092-7872
DOI:10.1080/00927879508825468
出版商:Marcel Dekker, Inc.
年代:1995
数据来源: Taylor
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3. |
On domains which have prime ideals that are linearly ordered |
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Communications in Algebra,
Volume 23,
Issue 12,
1995,
Page 4365-4373
Ayman Badawi,
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PDF (235KB)
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ISSN:0092-7872
DOI:10.1080/00927879508825469
出版商:Marcel Dekker, Inc.
年代:1995
数据来源: Taylor
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4. |
Quelques resultats sur les m-identites |
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Communications in Algebra,
Volume 23,
Issue 12,
1995,
Page 4375-4392
Patricia Wantiez,
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PDF (470KB)
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ISSN:0092-7872
DOI:10.1080/00927879508825470
出版商:Marcel Dekker, Inc.
年代:1995
数据来源: Taylor
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5. |
Clifford theory for projective modules over strongly graded rings |
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Communications in Algebra,
Volume 23,
Issue 12,
1995,
Page 4393-4404
Andrei Marcus,
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PDF (491KB)
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ISSN:0092-7872
DOI:10.1080/00927879508825471
出版商:Marcel Dekker, Inc.
年代:1995
数据来源: Taylor
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6. |
Inverses of virasoro operators |
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Communications in Algebra,
Volume 23,
Issue 12,
1995,
Page 4405-4413
Koichiro Harada,
Ching Hung Lam,
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PDF (190KB)
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ISSN:0092-7872
DOI:10.1080/00927879508825472
出版商:Marcel Dekker, Inc.
年代:1995
数据来源: Taylor
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7. |
Divisor class group and canonical class of rings defined by ideals of pfaffians |
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Communications in Algebra,
Volume 23,
Issue 12,
1995,
Page 4415-4426
Emanuela De Negri,
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PDF (439KB)
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摘要:
In this paper we study the rings defined by ideals of pfaffians of a skew symmetric matrix of indeterminates. We analyze the case in which the pfaffians are not necessarily of fixed size. We prove that such rings are Cohen-Macaulay normal domains and we compute the divisor class group and the canonical class. It allows us to determine which of our rings are Gorenstein.
ISSN:0092-7872
DOI:10.1080/00927879508825473
出版商:Marcel Dekker, Inc.
年代:1995
数据来源: Taylor
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8. |
(2,3,t)-Generations for the janko group j3 |
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Communications in Algebra,
Volume 23,
Issue 12,
1995,
Page 4427-4437
Shahiem Ganief,
Jamshid Moori,
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摘要:
A group G is (l,m,n)-generated if it is a quotient group of the triangle groupT(l,m,n) = (x,y,z|xl=ym=zn=xyz= 1). In [8] the problem is posed to find all possible (l,m,n)-generations for the non-abelian finite simple groups. In this paper we partially answer this question for the Janko groupJ3. We find all (2, 3, t)-generations as well as (2, 2,2,p)-generations, p a prime, forJ3
ISSN:0092-7872
DOI:10.1080/00927879508825474
出版商:Marcel Dekker, Inc.
年代:1995
数据来源: Taylor
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9. |
An inequality with regard to the canonical birationality for varieties |
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Communications in Algebra,
Volume 23,
Issue 12,
1995,
Page 4439-4446
Meng Chen,
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ISSN:0092-7872
DOI:10.1080/00927879508825475
出版商:Marcel Dekker, Inc.
年代:1995
数据来源: Taylor
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10. |
On the depth of certain graded rings associated to an ideal |
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Communications in Algebra,
Volume 23,
Issue 12,
1995,
Page 4447-4460
Guerrieri Anna,
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PDF (396KB)
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摘要:
Let (R,m) be a local ring andIan ideal ofR. In this work we find conditions onIthat allow us to describe simple relations among depthR(It), depth grI(R), depth S(I) and depth S(I/I2). These relations are useful also from a practical point, of view since it is usually difficult to evaluate depth grI(R) and depth S(I/I2) even with the help of a computer. Furthermore we study the class of ideals that satisfy one of the required conditions and we show that ideals generated by quadratic sequences are in this class
ISSN:0092-7872
DOI:10.1080/00927879508825476
出版商:Marcel Dekker, Inc.
年代:1995
数据来源: Taylor
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