# How did you structure your mathematical IA

### Portals, Search Engines and Math-Net

Please always quote using this URN: urn: nbn: de: 0297-zib-5923

Wolfram Sperber, Wolfgang Dalitz

- How does a scientist look for the information he needs for his work on the Internet? What relevant information is there on the web? Are search engines like AltaVista, Google or HotBot the right tools for this? Math-Net is the answer given by mathematicians. and communication system for mathematics. Math-Net consists first of all of the information from persons and institutions who want to provide their mathematics-relevant information there. This should generally take place on the web servers of the persons or institutions. This is where the situation differs in Math-Net does not differ from that in the WWW as a whole. In Math-Net, however, the information should be made accessible in a uniform manner. There are recommendations for structuring both servers and documents. The local information is then passed through in Math-Net automatic procedures collected, evaluated and indexed. These indexes are the basis for the Math-Net services. These are search engines and portals that offer qualified and efficient access to the information in Math-Net. The Math-Net services are specialized in mathematics. In contrast to the universal search engines mentioned above, they only cover a tiny fraction of the web, but the part that is relevant for mathematics. Math-Net is more than just a search engine or portal to information in mathematics. It is also an information and communication system as well as a publication medium for mathematics. The mathematical community has organized itself in the Math-Net initiative. This initiative is coordinated by the International Mathematical Union (IMU), the global umbrella organization of mathematical societies. The development of the Math-Net is supported by the broad consensus among mathematicians to facilitate and improve access to information relevant to mathematics.

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