DjVu - A Suitable Format for the DML

Report given at : Digital Mathematics Library, DML Planning Meeting, July 29-30, 2002, Washington, DC

National Science Foundation Headquarters, 4201 Wilson Boulevard, Arlington, Virginia 22230

Examples of DjVu Files (5): Individual Home Pages

It is possible and very easy for any Mathematician who maintains a web home page to offer all his reprints in searchable DjVu format as soon as these manuscripts are converted into a scanned image or another digital format like DVI, Postscript or PDF. Here are two examples:

An Image (PDF) from the Home Page of Peter Michor (10 Pages, 300 dpi):

DjVu      :   163 KByte,    16 KByte/page [ASCII Layer]
PDF       :   381 KByte,    38 KByte/page

A DjVu file created after a PDF file on the home page of Christian Siebeneicher (Bielefeld), retyped (in TeX) several old manuscripts, in particular the following:
Adam Risen : Rechenbuch auf Linien und Ziffern ... (1550) (31 Pages)
```
DjVu      :   181 KByte,     5 KByte/page [ASCII Layer]
```

Assuming the average size of a digitized page is 20 KByte (in DjVu, as the samples above suggest), then the DML (estimated 50,000,000 pages) can be digitized within 1,000,000,000 KByte = 1 TeraByte, the typical storage of a notebook six years from now.

To view the DjVu files. it is necessary that a DjVu viewer is installed on your system. This can be downloaded from DjVuLibre (free software).