منابع مشابه
Weights of Continuous Lattices 1
The articles [24], [12], [28], [21], [15], [30], [27], [29], [10], [11], [9], [13], [2], [1], [22], [23], [26], [3], [4], [17], [31], [7], [5], [14], [6], [19], [18], [25], [8], and [20] provide the notation and terminology for this paper. In this article we present several logical schemes. The scheme UparrowUnion deals with a relational structure A and a unary predicate P , and states that: Fo...
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We consider the `1 minimization problem minx ‖Ax − b‖1 in the overconstrained case, commonly known as the Least Absolute Deviations problem, where there are far more constraints than variables. More specifically, we have A ∈ Rn×d for n d. Many important combinatorial problems, such as minimum cut and shortest path, can be formulated as `1 regression problems [CMMP13]. We follow the general para...
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Given a doubling measure on R n , one can deene an associated quasidistance on R n by (x; y) = (B x;y) 1=n ; where B x;y is the smallest ball which contains the points x and y. This paper is concerned with the resulting geometry which is induced by. The main result provides a condition on under which R n equipped with the quasidistance (;) admits a bilipschitz embedding into R N with the standa...
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Recall that BFS is a special case the general Search-Tree(G,s) algorithm in which we store the vertices that border our growing tree T in a first-in-first-out (FIFO) queue. In this way, the algorithm explores every vertex of distance ` from the source vertex s before we explore any vertex of distance ` + 1, for all `. Its output is a tree T that contains the union of “geodesic” or shortest path...
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Atomic Absorption Spectrometry (AAS) is a technique for measuring quantities of chemical elements present in environmental samples by measuring the absorbed radiation by the chemical element of interest. This is done by reading the spectra produced when the sample is excited by radiation. The atoms absorb ultraviolet or visible light and make transitions to higher energy levels. Atomic absorpti...
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ژورنال
عنوان ژورنال: Nature
سال: 1910
ISSN: 0028-0836,1476-4687
DOI: 10.1038/084207a0