We consider a one point extension algebra B of a quiver algebra Aq over a field k defined by two cycles and a quantum-like relation depending on a nonzero element q in k. We determine the Hochschild cohomology ring of...We consider a one point extension algebra B of a quiver algebra Aq over a field k defined by two cycles and a quantum-like relation depending on a nonzero element q in k. We determine the Hochschild cohomology ring of B modulo nilpotence and show that if q is a root of unity, then B is a counterexample to Snashall-Solberg＇s conjecture.展开更多
用全实加关联 ( F CPC)方法计算了类锂体系 (从 L i 到 N e )激发态 1s2 nl ( l =0 ,1,2 ,3 ;6≤ n≤ 9)的能量及其精细结构 ( l >0 ) .相对论修正和质量极化效应用一级微扰论加以计算 .量子电动力学 ( QED)效应也予以估算 .所得...用全实加关联 ( F CPC)方法计算了类锂体系 (从 L i 到 N e )激发态 1s2 nl ( l =0 ,1,2 ,3 ;6≤ n≤ 9)的能量及其精细结构 ( l >0 ) .相对论修正和质量极化效应用一级微扰论加以计算 .量子电动力学 ( QED)效应也予以估算 .所得结果与已有的实验数据符合得很好 .结合量子亏损理论 ,得到这些类锂体系各里德伯 ( Rydberg)序列的量子数亏损 ,从而可准确地预言它们的任意激发态 ( n≥ 10 )展开更多
文摘We consider a one point extension algebra B of a quiver algebra Aq over a field k defined by two cycles and a quantum-like relation depending on a nonzero element q in k. We determine the Hochschild cohomology ring of B modulo nilpotence and show that if q is a root of unity, then B is a counterexample to Snashall-Solberg＇s conjecture.
