منابع مشابه
On the Means of the Values of Prime Counting Function
In this paper, we investigate the means of the values of prime counting function $pi(x)$. First, we compute the arithmetic, the geometric, and the harmonic means of the values of this function, and then we study the limit value of the ratio of them.
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The Omega polynomial(x) was recently proposed by Diudea, based on the length of strips in given graph G. The Sadhana polynomial has been defined to evaluate the Sadhana index of a molecular graph. The PI polynomial is another molecular descriptor. In this paper we compute these three polynomials for some infinite classes of nanostructures.
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This paper argues that temporal concepts that appear to involve a relation between an individual and a future event are not, as has often been claimed, directly structured in terms of locations in space and/or motion through space. Instead, the positioning of reified events in space is used to describe the degree of epistemic detachment holding between the individual and the event. This brings ...
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ژورنال
عنوان ژورنال: Nature
سال: 2001
ISSN: 0028-0836,1476-4687
DOI: 10.1038/35092607