In this paper,We give the forms of AR sequences of a tilted algebra with terms all belonging to x(A_T),or all belonging to y(A_T).The sink maps of a tilted algebra which end at the indecompos able projective modules a...In this paper,We give the forms of AR sequences of a tilted algebra with terms all belonging to x(A_T),or all belonging to y(A_T).The sink maps of a tilted algebra which end at the indecompos able projective modules and the source maps of starting at the indecomposable injective modules are also obtained.These results together with the connecting sequecnes given in [3] determine the AR quiver of the tilted algcbra,morever,this can be done directly from the AR quiver of the correspond ing hereditary algebra.展开更多
Let A be a basic hereditary artin algebra and R = A Q be the trivial extension of A by its minimal injective cogenerator Q. We construct some right （left） almost split morphisms and irreducible morphisms in modR thr...Let A be a basic hereditary artin algebra and R = A Q be the trivial extension of A by its minimal injective cogenerator Q. We construct some right （left） almost split morphisms and irreducible morphisms in modR through the corresponding morphisms in modA. Furthermore, we can determine its almost split sequences in modR.展开更多
The AR-quiver and derived equivalence are two important subjects in the repre- sentation theory of finite dimensional algebras, and for them there are two important research tools-AR-sequences and ：D-split sequences....The AR-quiver and derived equivalence are two important subjects in the repre- sentation theory of finite dimensional algebras, and for them there are two important research tools-AR-sequences and ：D-split sequences. So in order to study the representations of triangular matrix algebra T2（T） - （T O,T T）whereTis a finite dimensional algebra over afield, it is important to determine its AR-sequences and ：D-split sequences. The aim of this paper is to construct the right（left） almost split morphisms, irreducible morphisms, almost split sequences and V-split sequences of T2（T） through the corresponding morphisms and sequences of T. Some interesting results are obtained.展开更多
B chromosomes,also named supemumerary chromo-somes,derived from standard chromosome(Achromo-some)set.Once they originated,Bchromasomes are in-herited in a non-Mendelian way and express various inde-pendent behavior.Th...B chromosomes,also named supemumerary chromo-somes,derived from standard chromosome(Achromo-some)set.Once they originated,Bchromasomes are in-herited in a non-Mendelian way and express various inde-pendent behavior.They do not pair with A chromosomes,exhibit meiotic and mitotic instability,nondisjunction and have little or no phenotypic effects on the host[.2].Since B chromosome DNA is quite identical to corresponding se-quence on the A chromosome complement,Bchromosome specific DNA sequence has been the attractive subject of B chromosome research.So far only a few of B chromo-some specific DNA sequences have been identified[3.4].So more B chromosome specific sequences are required for explanation of the origin and behavior of B chromosome.In this article we described the isolation and characteriza-tion of a B chromosome specific DNA sequence from maize genome RAPD analysis.展开更多
文摘In this paper,We give the forms of AR sequences of a tilted algebra with terms all belonging to x(A_T),or all belonging to y(A_T).The sink maps of a tilted algebra which end at the indecompos able projective modules and the source maps of starting at the indecomposable injective modules are also obtained.These results together with the connecting sequecnes given in [3] determine the AR quiver of the tilted algcbra,morever,this can be done directly from the AR quiver of the correspond ing hereditary algebra.
基金The NSF (11271119) of Chinathe NSF (1122002) of Beijing
文摘Let A be a basic hereditary artin algebra and R = A Q be the trivial extension of A by its minimal injective cogenerator Q. We construct some right （left） almost split morphisms and irreducible morphisms in modR through the corresponding morphisms in modA. Furthermore, we can determine its almost split sequences in modR.
基金Supported by the National Natural Science Foundation of China(Grant No.10971172)the Natural Science Foundation of Beijing(Grant Nos.10920021122002)
文摘The AR-quiver and derived equivalence are two important subjects in the repre- sentation theory of finite dimensional algebras, and for them there are two important research tools-AR-sequences and ：D-split sequences. So in order to study the representations of triangular matrix algebra T2（T） - （T O,T T）whereTis a finite dimensional algebra over afield, it is important to determine its AR-sequences and ：D-split sequences. The aim of this paper is to construct the right（left） almost split morphisms, irreducible morphisms, almost split sequences and V-split sequences of T2（T） through the corresponding morphisms and sequences of T. Some interesting results are obtained.
文摘B chromosomes,also named supemumerary chromo-somes,derived from standard chromosome(Achromo-some)set.Once they originated,Bchromasomes are in-herited in a non-Mendelian way and express various inde-pendent behavior.They do not pair with A chromosomes,exhibit meiotic and mitotic instability,nondisjunction and have little or no phenotypic effects on the host[.2].Since B chromosome DNA is quite identical to corresponding se-quence on the A chromosome complement,Bchromosome specific DNA sequence has been the attractive subject of B chromosome research.So far only a few of B chromo-some specific DNA sequences have been identified[3.4].So more B chromosome specific sequences are required for explanation of the origin and behavior of B chromosome.In this article we described the isolation and characteriza-tion of a B chromosome specific DNA sequence from maize genome RAPD analysis.
