منابع مشابه
Beyond the Descartes Circle Theorem
The Descartes circle theorem states that if four circles are mutually tangent in the plane, with disjoint interiors, then their curvatures (or “bends”) bi = 1 ri satisfy the relation (b1 + b2 + b3 + b4) 2 = 2(b1 + b 2 2 + b 2 3 + b 2 4). We show that similar relations hold involving the centers of the four circles in such a configuration, coordinatized as complex numbers, yielding a complex Des...
متن کاملComplex Descartes Circle Theorem
We present a short proof of Descartes Circle Theorem on the “curvaturecenters” of four mutually tangent circles. Key to the proof is associating an octahedral configuration of spheres to four mutually tangent circles. We also prove an analogue for spheres. It can be traced back to at least Descartes that four mutually tangent circles have curvatures (reciprocals of radii) satisfying the relatio...
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This paper aims at briefly specifying an analytical approach for the understanding of diet and nutrition in Islam and its effects on the promotion of health within the society. The Qur'an and other Islamic literature on Hadiths (Traditions), Figh (Jurisprudence) and traditional medicine are studied. The specifications of the Islamic food, the significance of the use of a diet compatible w...
متن کاملNUTRITION FROM THE POINT OF VIEW OF ISLAM
This paper aims at briefly specifying an analytical approach for the understanding of diet and nutrition in Islam and its effects on the promotion of health within the society. The Qur’an and other Islamic literature on Hadiths (Traditions), Figh (Jurisprudence) and traditional medicine are studied. The specifications of the Islamic food, the significance of the use of a diet compatible with ...
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Introduction: Low nursing occupational prestige is the major challenge in nursing as a job in Iran. A high occupational prestige naturally causes self-esteem in the individuals and succeeding mainly with a job satisfaction. Objective: Considering the importance and necessity of the nursing occupational prestige, this study aimed to evaluate occupational prestige and its relationship with some ...
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ژورنال
عنوان ژورنال: Open Journal of Philosophy
سال: 2017
ISSN: 2163-9434,2163-9442
DOI: 10.4236/ojpp.2017.72012