منابع مشابه
On Local Fixing
In this paper we look at the difficulty of fixing solutions of classic network problems. We study local changes in graphs (edge resp. node insertion resp. deletion), and network problems (e.g. maximal independent set, minimum vertex cover, spanning trees, shortest paths). A change/problem combination is locally fixable if an existing solution of a problem can be fixed in constant time in case o...
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Let W be a variety of groups defined by a set W of laws and G be a finite p-group in W. The automorphism α of a group G is said to bea marginal automorphism (with respect to W), if for all x ∈ G, x−1α(x) ∈ W∗(G), where W∗(G) is the marginal subgroup of G. Let M,N be two normalsubgroups of G. By AutM(G), we mean the subgroup of Aut(G) consistingof all automorphisms which centralize G/M. AutN(G) ...
متن کاملRemarks on Lattice Gauge Fixing
In the lattice gauge theories where the links belong to a compact group, the gauge fixing is necessary only in the case of the measure of a gauge dependent operator. An expression similar to (1) but without having gauge fixed the links, defines the expectation value of a gauge independent operator. Moreover, in a lattice simulation there is no need to compute the Faddeev-Popov determinant becau...
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ژورنال
عنوان ژورنال: Scientific American
سال: 1877
ISSN: 0036-8733
DOI: 10.1038/scientificamerican07281877-1302bsupp