The second paragraph of this article contains two errors obvious (even to me! LOL) namely, duplication of text within double quotes. Here is the text:
The name "mathematical analysis" is a short version of the old name of this part of mathematics, "infinitesimal analysisinfinitesimal analysis" ; the latter more fully describes the content, but even it is an abbreviation (the name "analysis by means of infinitesimalsanalysis by means of infinitesimals" would characterize the subject more precisely). In classical mathematical analysis the objects of study (analysis) were first and foremost functions. "First and foremost" because the development of mathematical analysis has led to the possibility of studying, by its methods, forms more complicated than functions: functionals, operators, etc.
Perhaps the duplication of "infinitesimal analysis" and "analysis by mean of infinitesimals" resulted from whatever process was used to include articles ffom the printed version of the Encyclopedia in the online version. In any case, correcting the problem is elementary (even for me! LOL). Shall I do it?
Mathematical analysis. Encyclopedia of Mathematics. URL: http://encyclopediaofmath.org/index.php?title=Mathematical_analysis&oldid=31476