Enjoy an interactive learning experience as you see thousands of hand-selected and relevant links to pictures, artifacts, manuscripts, documents and other primary sources, IN CONTEXT, within each story.

<p><cite><b> WHAT THE KNOWLEDGE OF THE HISTORY OF MATHEMATICS AND OF THE PARTICULAR SUBJECT CAN OFFER US: </b></cite> </p><ul> <li>A human vision of science and of mathematics: not just truths, methods, techniques coming from nowhere, not just facts and skills without soul, without history, but the results of the efforts of persons motivated by deep interest and passion; not as godlike science, but human and so incomplete and fallible; the human side of the great discoveries and discoverers.</li> <p></p><li>A frame in which all elements appear in their right place: not facts centuries apart in their origin presented together in the same bag without a single remark, but explorations in their own context and with their own motivation; past fashions in order to be able to understand present fashions; the deep connections along time of the different leitmotivs of the mathematical symphony.</li> <p></p><li>A dynamical vision of the evolution of mathematics: the motivation and driving forces at the roots of the ideas and methods of the subject; the primordial creativity around each particular subject, its genesis and its progress</li></ul>

The term "invisible web" or "deep web" refers to the vast repository of information that search engines and directories don't have direct access to, like databases at university libraries, sites that require passwords to view, or sites that for some reason don't want search engines to crawl them. Unlike pages on the visible Web (that is, the Web that you can access from search engines and directories), information in databases is generally inaccessible to the software spiders and crawlers that create search engine indexes.

Users of primary sources have always needed to examine their sources critically, but now with the proliferation of electronic resources from a wide variety of web site producers, evaluation is more important than ever before. Users of web resources must now consider the authenticity of documents, what person or organization is the internet provider, and whether the electronic version serves their needs. This brief guide is designed to provide students and researchers with information to help them evaluate the internet sources and the quality of primary materials that can be found online.