LINEAL: an electronic encyclopedia in linear algebra" . V.V. Voevodin and Vl.V. Voevodin . This paper is devoted to an information system designed for the usage in Internet and for the operation with problem-oriented databases in those branches of science where the cause-and-effect relations are of prime importance. Linear algebra is taken as an example for presentation of the system. ... PostScript (in Russian) (28MB) . ... V.V. Voevodin and Vl.V. Voevodin e-mail: voevodin@parallel.ru ...