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P.Erdos的一个问题
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作者 黄晓农 《漳州师范学院学报(自然科学版)》 2002年第3期60-62,共3页
P.Erods在[1]中提出一个问题“设图G的围长g(G)≥4,图G能否这样定向:使图G不包含有向圈,而且任意改变它的某一条边的方向后所得图也不包含有向圈”。本文证明了二部图,三部图可以这样定向,也构造并证明了一类图Q2t+1不能这样定向。
关键词 p.erdos 定向 有向圈 有向图 二部图 三部图 围长 简单图 有向路
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High Energy Physics and Cosmology as Computation 被引量:3
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作者 Mohamed S. El Naschie 《American Journal of Computational Mathematics》 2016年第3期185-199,共16页
The present paper is basically written as a non-apologetic strong defence of the thesis that computation is part and parcel of a physical theory and by no means a mere numerical evaluation of the prediction of a theor... The present paper is basically written as a non-apologetic strong defence of the thesis that computation is part and parcel of a physical theory and by no means a mere numerical evaluation of the prediction of a theory which comes towards the end. Various general considerations as well as specific examples are given to illustrate and support our arguments. These examples range from the practical aspect to almost esoteric considerations but at the end, everything converges towards a unity of theory and computation presented in the form of modern fractal logic and transfinite quantum field theory in a Cantorian spacetime. It is true that all our examples are taken from physics but our discussion is applicable in equal measure to a much wider aspect of life. 展开更多
关键词 Fractal Logic E-Infinity Theory Cantorian-Fractal Spacetime P. Erdos A. Turing Computer Transfinite Turing Machine A. Connes Noncommutative Geometry von Neumann Continuous Geometry Golden Mean Computer Pointless Geometry Fuzzy Sets Fuzzy Logic
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