1. Digitization of mathematical editions in Serbia Žarko Mijajlović 1 Zoran Ognjanović 2 Aleksandar Pejović 3

2. Introduction Project’s concerns are digitization of:  Mathematics-related books, thesis and manuscripts  Mathematical journals Project’s goals are:  Forming digital archives and databases  Presenting digitized materials freely via Internet

3. Retro-digitization (1) Criteria for retro-digitization:  Books and manuscripts selected for digitization should be related with mathematical sciences: mathematics, mechanics, astronomy, physics, mathematical geography etc  Books considered for digitization had to be published before certain date in the past. We have chosen for this date the beginning of the Second World War (1941)  Preference will be given to Serbian authors, or to written works related in some way to the area of Balkan

4. Retro-digitization (2) More than 100 books, thesis and manuscripts have been digitized:  Vasilije Damjanović, Aritmetika, Venice, 1767  Jovan Došenović, Čislenica, Budim, 1809  Dimitrije Denić, Conforme abbildung des eliptishen paraboloids auf die ebene, Inaguaral dissertation der Philosoph. Fakultaet zu Jena, printed in Belgrade, 1885

5. Mathematical journals Retro-digitization started with:  Publications de l’Institut Mathematique  Publications of the Faculty of Electrical Engineering, Series Mathematics and Physics Today we have Internet presentation of freely accessible full-text mathematical journals

6. Technological aspects of the project (1) Addressed issues:  Rules for choosing material to be digitized  Information retrieval  Metadata and rules for handling them  Distribution of information using Internet  Ability to search electronic files efficiently  Proper choice of data format and resolution

7. Technological aspects of the project (2) Our retro-digitization process:  Scanning document pages Gray-scale mode, 300 dpi  Processing scanned pages Impurities cleaning, contrast improving  Storing processed pages Tiff format, LZW compression  Collecting processed pages PDF and/or DjVu

8. Technological aspects of the project (3) Types of metadata:  Descriptive obey librarian standards  Structural  Administrative resolution, rate of compression

9. Technological aspects of the project (4) Used technologies:  UTF-8 encoding  MySQL database server  JAVA  PHP  Apache web server

10. Conclusion Project is still a work in progress Future goals are:  Unifying already digitized materials  Adding new journals  Continuing with retro-digitization  Enlarging the database with journals from region

11. Digitized mathematical resources Virtual library of old mathematical works:  http://elib.matf.bg.ac.yu:8080/virlib http://elib.matf.bg.ac.yu:8080/virlib  http://elib.matf.bg.ac.yu:8080/elib http://elib.matf.bg.ac.yu:8080/elib eLibrary of mathematical journals:  http://elib.mi.sanu.ac.yu/pages/browse_journals.php? http://elib.mi.sanu.ac.yu/pages/browse_journals.php? Retro-digitized journal Publications de l’Institut Mathmatique:  http://publication.mi.sanu.ac.yu http://publication.mi.sanu.ac.yu Retro-digitized journal Publications of the Faculty of Electrical Engineering:  http://pefmath2.etf.bg.ac.yu/pages/main.php http://pefmath2.etf.bg.ac.yu/pages/main.php Visual Mathematics:  http://www.mi.sanu.ac.yu/vismath/ http://www.mi.sanu.ac.yu/vismath/

12. Contact information 1 Faculty of Mathematics, Studentski Trg 16, Belgrade, Serbia zarkom@eunet.yu zarkom@eunet.yu 2 Mathematical Institute, Kneza Mihaila 35, Belgrade, Serbia zorano@mi.sanu.ac.yu zorano@mi.sanu.ac.yu 3 pejovica@mi.sanu.ac.yu pejovica@mi.sanu.ac.yu