منابع مشابه
DEVELOPMENT IN STRING THEORY
The string theory is a fast moving subject, both physics wise and in the respect of mathematics. In order to keep up with the discipline it is important to move with new ideas which are being stressed. Here I wish to give extracts from new papers of ideas which I have recently found interesting. There are six papers which are involved: I ."Strings formulated directly in 4 dimensions " A. N...
متن کاملString Matching with Involutions
In this note we propose a novel algorithm for locating in a text T every occurrence of a strings that can be obtained from a given pattern P by successively applying antimorphic involutions on some of its factors. When the factors on which these involutions are applied overlap, a linear time algorithm is obtained. When we apply the involutions to non-overlapping factors we obtain an algorithm r...
متن کاملString-matching with OBDDs
Ordered binary decision diagrams (OBDDs) are a very popular graph representation for Boolean functions. They can be viewed as 3nite automata recognizing sets of strings of a 3xed length, where the letters of the input strings are read at most once in a prede3ned ordering. The string matching problem with string w as pattern, consists of determining, given an input string, whether or not it cont...
متن کاملString matching with lookahead
Forward-SBNDM is a recently introduced variation of the BNDM algorithm for exact string matching. Forward-SBNDM inspects a 2-gram in the text such that the first character is the last one of an alignment window of the pattern and the second one is then outside the window. We present a generalization of this idea by inspecting several lookahead characters beyond an alignment window and integrate...
متن کاملCharacterizing a cosmic string with the statistics of string lensing
The deep imaging of the field of an observed lensing event by a cosmic string reveals many additional lensing events. We study the statistics of such string lensing. We derive explicit expressions for the distributions of image separations of lensing by a cosmic string and point out that they are quite sensitive to parameters which characterize the cosmic string, such as the redshift and tensio...
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ژورنال
عنوان ژورنال: TEXTILE
سال: 2007
ISSN: 1475-9756,1751-8350
DOI: 10.2752/175183507x219498