The aim of this article is to study some invariants of associative algebras under stable equivalences of Morita type. First of all, we show that, if two finite-dimensional selfinjective k-algebras are stably equivalen...The aim of this article is to study some invariants of associative algebras under stable equivalences of Morita type. First of all, we show that, if two finite-dimensional selfinjective k-algebras are stably equivalent of Morita type, then their orbit algebras are isomorphic. Secondly, it is verified that the quasitilted property of an algebra is invariant under stable equivalences of Morita type. As an application of this result, it is obtained that if an algebra is of finite representation type, then its tilted property is invariant under stable equivalences of Morita type; the other application to partial tilting modules is given in Section 4. Finally, we prove that when two finite-dimensional k-algebras are stably equivalent of Morita type, their repetitive algebras are also stably equivalent of Morita tvDe under cert..in conditions.展开更多
The new type of copper deposits concerned with in this paper are vein copperdeposits found in the Lanping-Simao Rift Basin, Yunnan, China. As is indicated by H,O, C, S, Pb and Sr isotopes, water and mineralisers in th...The new type of copper deposits concerned with in this paper are vein copperdeposits found in the Lanping-Simao Rift Basin, Yunnan, China. As is indicated by H,O, C, S, Pb and Sr isotopes, water and mineralisers in the ore-forming fluids were derivedfrom heated meteoric waer and mantle, respectively. The metallic elements (Cu, Ag, Pb,Zn, As, Sb, Fe, REE, etc.) are characterised by a mised source from the crust and themantle.展开更多
This article concerns a class of Ornstein-Uhlenbeck type Markov processes and for which the level sets will be approached. By constructing a new class f processes, we shall obtain an inequality on the Hausdorff dimens...This article concerns a class of Ornstein-Uhlenbeck type Markov processes and for which the level sets will be approached. By constructing a new class f processes, we shall obtain an inequality on the Hausdorff dimensions of the level sets for the Ornstein-Uhlenbeck type Markov processes. Based on this result, we finally verify that any two independent O-U.M.P with alpha-stable processes could collide with probability one.展开更多
The determination of the stable isotopes, δD, δ18 and δ30, values from hydrothermal chimneys in the Mariana Trough, the West Pacific, indicated that the pure siliceous chimneys with gentle data variation were forme...The determination of the stable isotopes, δD, δ18 and δ30, values from hydrothermal chimneys in the Mariana Trough, the West Pacific, indicated that the pure siliceous chimneys with gentle data variation were formed in low temperature environment. It reflects that the sea-floor hydrothermal activity of the Mariana Trough is primarily low-to-medium temperature hydrothermal eruption, and those chimneys with strong data variation and containing pyrite were formed in higher temperature environment. Key words Mariana Trough - stable isotope - geochemistry - hydrothermal chimney - genetic type Project 49876016 supported by NSFC.展开更多
基金Project supported by the National Natural Science Foundation of China(10871170)the Zhejiang Provincial Natural Science Foundation of China(D7080064)supported by the National Natural Science Foundation of China(10801117)
文摘The aim of this article is to study some invariants of associative algebras under stable equivalences of Morita type. First of all, we show that, if two finite-dimensional selfinjective k-algebras are stably equivalent of Morita type, then their orbit algebras are isomorphic. Secondly, it is verified that the quasitilted property of an algebra is invariant under stable equivalences of Morita type. As an application of this result, it is obtained that if an algebra is of finite representation type, then its tilted property is invariant under stable equivalences of Morita type; the other application to partial tilting modules is given in Section 4. Finally, we prove that when two finite-dimensional k-algebras are stably equivalent of Morita type, their repetitive algebras are also stably equivalent of Morita tvDe under cert..in conditions.
文摘The new type of copper deposits concerned with in this paper are vein copperdeposits found in the Lanping-Simao Rift Basin, Yunnan, China. As is indicated by H,O, C, S, Pb and Sr isotopes, water and mineralisers in the ore-forming fluids were derivedfrom heated meteoric waer and mantle, respectively. The metallic elements (Cu, Ag, Pb,Zn, As, Sb, Fe, REE, etc.) are characterised by a mised source from the crust and themantle.
文摘This article concerns a class of Ornstein-Uhlenbeck type Markov processes and for which the level sets will be approached. By constructing a new class f processes, we shall obtain an inequality on the Hausdorff dimensions of the level sets for the Ornstein-Uhlenbeck type Markov processes. Based on this result, we finally verify that any two independent O-U.M.P with alpha-stable processes could collide with probability one.
文摘The determination of the stable isotopes, δD, δ18 and δ30, values from hydrothermal chimneys in the Mariana Trough, the West Pacific, indicated that the pure siliceous chimneys with gentle data variation were formed in low temperature environment. It reflects that the sea-floor hydrothermal activity of the Mariana Trough is primarily low-to-medium temperature hydrothermal eruption, and those chimneys with strong data variation and containing pyrite were formed in higher temperature environment. Key words Mariana Trough - stable isotope - geochemistry - hydrothermal chimney - genetic type Project 49876016 supported by NSFC.
