منابع مشابه
Walker groups
A reformulation of Walker’s theorem on the cancellation of Z says that any two homomorphisms from an abelian group B onto Z have isomorphic kernels. It does not have a constructive proof, even for B a subgroup of Z3. In this paper we give a constructive proof of Walker’s theorem for B a direct sum, over any discrete index set, of groups of the following two kinds: finite-rank torsion-free group...
متن کاملMichael Platt
operates in a number of them and earns there only around £30 million. Despite the concerns, many still believe Witty’s pledge marks a major step forward for neglected diseases and developing countries. “He is breaking the mould in validating the concept of patent pools,” said Rohit Malpani at Oxfam’s access to medicines campaign. “It is a big step forward. It is welcome that he is inviting othe...
متن کاملMichael S
In the era of the North American Free Trade Agreement (NAFTA), the public and private sectors are increasingly committed to the growth of transport-oriented infrastructure, including ports, highways, bridges, and rail facilities. In particular there has been much interest in international bridges spanning the Rio Grande, the roads and rail lines leading to these bridges, and the port facilities...
متن کاملMichael Polanyi
RECENTLY there fell into my hands by the kindness of its author a book which has revealed to me a new, and I think much better, understanding of the situation we are facing today in consequence of the modern scientific revolution. The author’s name is Josef Pieper, professor of philosophical anthropology at the University of Münster, and his book which so impressed me is entitled Scizolastik. (...
متن کاملMichael Young
Michael Young was born in Miami, Florida. As an undergraduate at The University of Texas at Austin, he joined Burke Judd’s group for a summer of research. This was his introduction to Drosophila and genetics, and it stretched into a doctorate. His postdoctoral work was in the Department of Biochemistry at the Stanford School of Medicine where he began to study transposable elements. He was appo...
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ژورنال
عنوان ژورنال: British Dental Journal
سال: 2006
ISSN: 0007-0610,1476-5373
DOI: 10.1038/sj.bdj.4813344