  Since information in electronic form is already a standard, and that the
variety and the quantity of information become increasingly large, the methods
of summarizing or automatic condensation of texts is a critical phase of the
analysis of texts. This article describes CORTEX a system based on numerical
methods, which allows obtaining a condensation of a text, which is independent
of the topic and of the length of the text. The structure of the system enables
it to find the abstracts in French or Spanish in very short times.
