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- 저자 : Zahra Saeedi (검색결과 3 건)
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DERIVATIONS ON CONVOLUTION ALGEBRAS
MEHDIPOUR, MOHAMMAD JAVAD,SAEEDI, ZAHRA Korean Mathematical Society 2015 대한수학회보 Vol.52 No.4
In this paper, we investigate derivations on the noncommutative Banach algebra $L^{\infty}_0({\omega})^*$ equipped with an Arens product. As a main result, we prove the Singer-Wermer conjecture for the noncommutative Banach algebra $L^{\infty}_0({\omega})^*$. We then show that a derivation on $L^{\infty}_0({\omega})^*$ is continuous if and only if its restriction to rad($L^{\infty}_0({\omega})^*$) is continuous. We also prove that there is no nonzero centralizing derivation on $L^{\infty}_0({\omega})^*$. Finally, we prove that the space of all inner derivations of $L^{\infty}_0({\omega})^*$ is continuously homomorphic to the space $L^{\infty}_0({\omega})^*/L^1({\omega})$.
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DERIVATIONS ON CONVOLUTION ALGEBRAS
Mohammad Javad Mehdipour,Zahra Saeedi 대한수학회 2015 대한수학회보 Vol.52 No.4
In this paper, we investigate derivations on the noncommutative Banach algebra L∞ 0 (ω)∗ equipped with an Arens product. As a main result, we prove the Singer-Wermer conjecture for the noncommutative Banach algebra L∞ 0 (ω)∗. We then show that a derivation on L∞ 0 (ω)∗ is continuous if and only if its restriction to rad(L∞ 0 (ω)∗) is continuous. We also prove that there is no nonzero centralizing derivation on L∞ 0 (ω)∗. Finally, we prove that the space of all inner derivations of L∞ 0 (ω)∗ is continuously homomorphic to the space L∞ 0 (ω)∗/L1(ω).
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Modirian, Mitra,Cheraghi, Zahra,Rahimzadeh, Shadi,Moghaddam, Sahar Saeedi,Jarrahi, Alireza Mosavi Asian Pacific Journal of Cancer Prevention 2015 Asian Pacific journal of cancer prevention Vol.16 No.17
Background: Thyroid tumors are generally regarded as rare malignancies. Nowadays, however, their global incidence is growing continuously partially due to western life style and utilization of more sensitive methods of early detection. It is approximately three times more prevalent in females than in males. Most cases of thyroid cancer are asymptomatic nodules or just have local cervical symptoms or adenopathy in early stages. Materials and Methods: The Global Burden of Diseases report 2010 study (released 3/2013) profited from 100 collaborators worldwide and used a vast network of data on health outcomes, vital registries, and population surveys. It shared many of the Global Burden of Diseases 1990 principal databases such as all available data on injuries, diseases, risk factors, as well as comparable metrics, and used different scientific approved methods to estimate important health status data like: death rate, life expectancy, healthy adjusted life expectancy, disability-adjusted life years (DALY), years of living lost due to premature death and years of life with disabilities. Results: DALY as thyroid cancer burden per 100,000 Iranian populations had increased by about 14% during 1990 to 2010 in all ages; from 6.1 (95% UI 4.2-9.74) years in 1990 to 6.95 (95% UI 5.06-9.18) years in 2010 in both sex. The 2010 peak age-group was estimated at 45-49 years in males and 40-45 years in females.
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