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The Man Who Counted (original Portuguese title: O Homem que Calculava) is a book on recreational mathematics and curious word problems by Brazilian writer Júlio César de Mello e Souza, published under the pen name Malba Tahan.
The kukuchu tupu (kukush tupu) was equivalent to the Spanish codo and was the distance measured from the elbow to the end of the fingers of the hand. [14] There was also the capa ( span ), and the smallest was the yuku or jeme , which was the length between the index finger and the thumb, separating one from the other as much as possible.
His methods of calculating positions were not used by Spanish navigators, who could have benefited greatly from them. Most of his writings were never published, remaining in manuscript. In New Spain it was difficult to print them, not only because of high costs but also because special type faces were unavailable, for example, for mathematical ...
Afrikaans; العربية; Aragonés; Asturianu; تۆرکجه; Català; Čeština; Cymraeg; Dansk; Español; Esperanto; Euskara; فارسی; Français; Gaeilge ...
The RSME actively collaborates with other scientific societies in Spain in various activities such as the celebration, in 2000, of the World Year of Mathematics, the preparation of the Spanish candidacy and the subsequent organization of the International Congress of Mathematicians (ICM) that was held in August 2006 in Madrid and the work of the Senate Report on the teaching of science in ...
Because translation is commutative, the translation group is abelian. There are an infinite number of possible translations, so the translation group is an infinite group . In the theory of relativity , due to the treatment of space and time as a single spacetime , translations can also refer to changes in the time coordinate .
The word "algebra" is derived from the Arabic word الجبر al-jabr, and this comes from the treatise written in the year 830 by the medieval Persian mathematician, Al-Khwārizmī, whose Arabic title, Kitāb al-muḫtaṣar fī ḥisāb al-ğabr wa-l-muqābala, can be translated as The Compendious Book on Calculation by Completion and Balancing.
Examples of unexpected applications of mathematical theories can be found in many areas of mathematics. A notable example is the prime factorization of natural numbers that was discovered more than 2,000 years before its common use for secure internet communications through the RSA cryptosystem. [127]