منابع مشابه
Diophantus and the Arithmetica
“Knowing, my most esteemed friend Dionysius, that you are anxious to learn how to investigate problems in numbers, I have tried, beginning from the foundations on which the science is built up, to set forth to you the nature and power subsisting in numbers.” Thus Diophantus begins his great work Arithmetica (Heath, 129) and gives the world what would become its most ancient text on algebra. The...
متن کاملActa Arithmetica Ix (1964) Arithmetical Tauberian Theorems
(1) f(x) = x+o(x) . The problem is discussed explicitly by Landau ([7], pp . 597-604 ; [8]), Ingham ([3]), Karamata ([5], [6]), Gordon ([1]), and is implicit in the 'Eratosthenian' summation method introduced by Wintner ([10], [11]) . In this paper we consider the analogous problem in which the sequence {n} of all positive integers is replaced by a finite or infinite sequence 1, a,, a2, . . . o...
متن کاملAcute promyelocytic leukemia cases with nonreciprocal PML/RARa or RARa/PML fusion genes.
Tumor-associated chromosome translocations usually lead to the formation of two reciprocal fusion genes: one thought to be involved in the transformation process, the other the mechanical consequence of the translocation event. In the case of acute promyelocytic leukemia (APL) blasts, the 15;17 chromosome translocation generates the putatively transforming PML/RARa fusion gene and its reciproca...
متن کاملExpression and Function of PML-RARA in the Hematopoietic Progenitor Cells of Ctsg-PML-RARA Mice
Because PML-RARA-induced acute promyelocytic leukemia (APL) is a morphologically differentiated leukemia, many groups have speculated about whether its leukemic cell of origin is a committed myeloid precursor (e.g. a promyelocyte) versus an hematopoietic stem/progenitor cell (HSPC). We originally targeted PML-RARA expression with CTSG regulatory elements, based on the early observation that thi...
متن کاملNevus sebáceo cerebriforme: uma rara apresentação*
A 13-year-old boy presented congenital, raised, yellowish colored plaques with fi broelastic consistency, which were velvety in appearance, alopecic, with clearly defi ned limits and sulci or well-marked meandering invaginations, a cerebriform appearance on the upper part of the right ear, accompanied by alopecia in the temporomandibular region-parietal. The lesion was asymptomatic. Histopathol...
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ژورنال
عنوان ژورنال: Science
سال: 1910
ISSN: 0036-8075,1095-9203
DOI: 10.1126/science.32.812.114