The Multilingual Mathematics Knowledge Base which can be reached through http://mbuttons.bolyai.hu was created through the common application to the competition MINERVA of several European countries. The Hungarian party, complying with the purposes of the János Bolyai Mathematical Society, is the participant of a programme whose target consist of students, teachers and researchers of mathematics. The internet dictionary of mathematics runs its test version only, but it is still worth trying it.
Unlike other usual encyclopaedias, in this so-called thesaurus or knowledge base, the explanation of words and phrases used in mathematics appear together with figures, examples, and links to other concepts and their environment. In the final version searching by topics will also be possible. At the moment, searching on a main entry of a topic, it is possible to study the topic to its full extent due to the graphic display.
A particular feature of the mathematical thesaurus is that it has eight languages, and can be enhanced by further languages any time. Originally, a part of the contents created within the frame of the Mathematics Millennium Project of Cambridge University was translated into Hungarian, Polish, Lithuanian, Finnish, Danish, Spanish and Slovakian: roughly the material taught in primary and secondary schools. However, all countries adjusted the topics of mathematics in their own language to their taste: some items have been added to, others have been omitted from the English version. Although the propositions in mathematics are the same everywhere, their teaching, the method of introducing concepts are different in each country. Each European country had the chance to improve those parts of the dictionary which were thought to be the best following their own ambitions. A previously chosen basic set of words has been translated into each language, and several phrases can only be found in English.