منابع مشابه
Colloquia Mathematica Societatis
For any infinite cardinal K define a family .F of sets to be a Kalmost-disjoint family (K-ADF) iff U y has cardinality K, each member of .F has cardinality K, and the intersection of any two distinct members of F has cardinality strictly less than K . Define such a family to be a K-maximal almost-disjoint family (K-MADF) iff for every set S c U 'F of cardinality K there exists a set FEE JF* who...
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The 2016 US Presidential Election brought considerable attention to the phenomenon of “fake news”: entirely fabricated and often partisan content that is presented as is from a legitimate source. In this talk, I will explore two outstanding questions about fake news: Who falls for it, and what can be done to fight it? It is typically assumed that people believe fake news stories that are consis...
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The authors continue their study of extremal problems of Turán type for directed graphs with multiple edges, now permitting any finite nonnegative integer multiplicity . Having proved earlier (for the case of multiplicity at most 1) that there exists, for any family of "sample" digraphs, a matrix which represents the structure of an "asymptotically extremal sequence" of digraphs (containing non...
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The authors present general considerations and simple models for the operation of isothermal motors at small scales, in asymmetric environments. Their work is inspired by recent observations on the behavior of molecular motors in the biological realm, where chemical energy is converted into mechanical energy. A generic Onsager-like description of the linear (close to equilibrium) regime is pres...
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ژورنال
عنوان ژورنال: Quarterly Journal of Experimental Physiology and Cognate Medical Sciences
سال: 1960
ISSN: 0033-5541
DOI: 10.1113/expphysiol.1960.sp001500