%0 Journal Article %T MATHEMATICS AND MENTAL CALCULUS %A MARINA TOMA %J Journal of Science and Arts %D 2010 %I Bibliotheca Publishing House %X This paper presents some great skills of both mathematicians and nonmathematicians in mental calculus. These data are important because the personalities we spoke about were very significant for their times and their work meant a lot for the progress of the mathematical science. %K mental calculus %K Wallis %K von Neumann %K Colburn %K Bidder %K Dase %K Aitken %U http://www.icstm.ro/DOCS/josa/josa_2010_1/a.04_mathematics_and_mental_calculus.pdf