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Think logarithmically!

  • We discuss here a number of algorithmic topics which we use in our teaching and in learning of mathematics and informatics to illustrate and document the power of logarithm in designing very efficient algorithms and computations – logarithmic thinking is one of the most important key competencies for solving real world practical problems. We demonstrate also how to introduce logarithm independently of mathematical formalism using a conceptual model for reducing a problem size by at least half. It is quite surprising that the idea, which leads to logarithm, is present in Euclid’s algorithm described almost 2000 years before John Napier invented logarithm.

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Author:Maciej M. Sysło, Anna Beata Kwiatkowska
ISSN:1868-0844 (print)
ISSN:2191-1940 (online)
Parent Title (English):KEYCIT 2014 - Key Competencies in Informatics and ICT
Publisher:Universitätsverlag Potsdam
Place of publication:Potsdam
Document Type:Article
Year of Completion:2015
Publishing Institution:Universität Potsdam
Release Date:2015/10/27
Tag:Euclid’s algorithm; Fibonacci numbers; Logarithm; binary representation; binary search; complexity; divide and conquer; exponentiation
First Page:371
Last Page:380
Organizational units:Mathematisch-Naturwissenschaftliche Fakultät / Institut für Informatik und Computational Science
Dewey Decimal Classification:0 Informatik, Informationswissenschaft, allgemeine Werke / 00 Informatik, Wissen, Systeme / 004 Datenverarbeitung; Informatik
Publication Way:Open Access
Collections:Universität Potsdam / Schriftenreihen / Commentarii informaticae didacticae (CID) / CID (2015) 07
Universität Potsdam / Schriftenreihen / Commentarii informaticae didacticae (CID) / CID (2015) 07 / Short Papers
Licence (German):License LogoCreative Commons - Namensnennung, Nicht kommerziell, Keine Bearbeitung 3.0 Deutschland