### Wolfgang Dalitz / Wolfram Sperber** (ZIB Berlin)**

#### Math-Net Pages and the Math-Net Navigator

The International Mathematical Union (IMU) has declared
their activities in the field of electronic information
and communication a major topic of its work.

Especially the IMU supports the Math-Net activities to build
up a user-friendly information and communicationm network
in mathematics. Mathematicians and mathematical institutions
should provide their information in a standardized way. Web services
gather and process the information to make the information
accessible in an efficient way.

Such a knowledge system requires a standardized semantic
description of the resources in the system.

The Math-Net initiative
has developed RDF/RDFS metadata schemes
for a semantic annotation for special resource classes.

E.g., Math-Net Pages are portals to the core information of
mathematical institutions.
The Math-Net Navigator processes this information and provides
different functionalities to retrieve and search the information
which are accessible by the Math-Net Pages:

- a search over the information
- a geograpohic-oriented view of the information
- a subject-oriented view of the information

The views are scalable: the top level covers all Math-Net Members
in the world. Moreover, the navigator provides continent- and
country-specific views.
It is planned to make the information given in the database
of the Math-Net navigator usable also by other Math-Net Services.
The talk discusses the current state of the Math-Net Page and the
Math-Net Navigator.