皆様
トリア大学のNorbert Mueller先生の講演のお知らせです。 どうぞふるってご参加ください。
問合せ先： 石原 哉 北陸先端科学技術大学院大学 情報科学研究科 e-mail: [email protected]
----------------------------------------------- * JAIST Logic Seminar Series *
* This seminar is held as a part of JSPS Core-to-Core Program, A. Advanced Research Networks, and EU FP7 Marie Curie Actions IRSES project COMPUTAL (http://computal.uni-trier.de/).
Date: Tuesday 25 August, 2015, 15:10-16:40
Place: JAIST, Collaboration room 6 (I-57g) (Access: http://www.jaist.ac.jp/english/location/access.html)
Speaker: Norbert Mueller (University of Trier)
Title: Real numbers and computers
Abstract: Sometimes, people think that computers could compute correctly. Unfortunately, this is not true in general: Overflows, underflows, rounding errors and truncation errors can lead to grossly wrong results, even if the used algorithm is implemented with care. This can often be traced down to use of "double precision numbers" as a replacement for the "real numbers".
In the talk we present how a computer can compute more precisely or even "exact", just using basic concepts of object-oriented programming. Additionally, we present some of the basic ideas that are used to get an efficient implementation of exact real arithmetic.