نتایج جستجو برای: hartwig reaction

تعداد نتایج: 412714  

Journal: :Astronomische Nachrichten 1880

Journal: :Annales Universitatis Paedagogicae Cracoviensis. Studia Poetica 2018

Journal: :European Journal of Wildlife Research 2014

2000
Estelle L. Basor Kent E. Morrison

The conjecture of Fisher and Hartwig, published in 1968, describes the asymptotic expansion of Toeplitz determinants with singular generating functions. For more than twenty years progress was made in extending the validity of the conjecture, but recent computer experiments led to counter-examples that show the limits of the original conjecture and pointed the way to a revised conjecture. This ...

2013
SAMUEL J. DITTMER DINESH KHURANA P. NIELSEN

In 1977 Hartwig and Luh asked whether an element a in a Dedekind-finite ring R satisfying aR = a2R also satisfies Ra = Ra2. In this paper, we answer this question in the negative. We also prove that if a is an element of a Dedekind-finite exchange ring R and aR = a2R, then Ra = Ra2. This gives an easier proof of Dischinger’s theorem that left strongly π-regular rings are right strongly π-regula...

Journal: :International Journal of Epidemiology 2016

Journal: :Astronomische Nachrichten 1880

2015
Dragana S. Cvetkovic-Ilic Yimin Wei DRAGANA S. CVETKOVIĆ-ILIĆ YIMIN WEI

In this paper a representation is given for the Drazin inverse of a 2 × 2 operator matrix, extending to Banach spaces results of Hartwig, Li and Wei [SIAM J. Matrix Anal. Appl., 27 (2006) pp. 757–771]. Also, formulae are derived for the Drazin inverse of an operator matrix M under some new conditions.

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید