Downloading and viewing instructions

If you are using a World Wide Web browser to view the pages of the Electronic Journal of Qualitative Theory of Differential Equations, then simply click on the appropriate link to download the paper on your own computer in DVI, PostScript or PDF format. In order to view and print these files you need a viewer that understands the appropriate format (see the pages on viewing and printing the DVI, PostScript and PDF files). You can even set up your browser so that after the download is complete it starts the appropriate DVI, PS or PDF viewer program.

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All the available formats have advantages and disadvatages. Let me summarize their best and worst properties so that you can easily decide which one is best for you:

• DVI files: These files are small, have standard format and are well-know if one uses TeX. To view or print these files you need a viewer (DVIWIN is 1.6 Mb), you need font files (a full 300 dpi font set is 10.3 Mb), and you need the pictures, if there are pictures in the DVI file. You might experience problems with this format if you do not have some of the fonts used in the DVI file, or if the viewer is not capable of showing or printing the pictures referenced by the DVI file. To view these files we would recommend a 100 dpi font sets for the screen, to print them in an acceptable form we would recommend 300 dpi font sets. Note that viewing and printing these files in 300 dpi needs at least 8 Mb of RAM in Windows (using DVIWIN).
• PostScript files: These files are in standard ASCII text form, they are graphics description files. They can be resolution independent (in this journal we use 600 dpi PostScript files), they contain all font and graphics information but they are 3--8 times larger than the DVI files. To view or print these files you need a viewer (GSView is 5.8 Mb), and a Win32S emulator (3.3 Mb) for Windows 3.x. You might experience problems with displaying this format in larger than 150 dpi even on a machine with 16 Mb or more RAM. Note that viewing and printing these files requires at least 8 Mb of RAM in Windows (using GSView), but even with 16 Mb of RAM it will not be very fast.
• PDF files: These files are binary files, they are graphics description files. They can be resolution independent (in this journal we use 600 dpi PDF files), they contain all font and graphics information but they are 3--6 times larger than the DVI files. To view or print these files you need a viewer (GSView is 5.8 Mb), and a Win32S emulator (3.3 Mb) for Windows 3.x or Acrobat Reader. You might experience problems with displaying this format in larger than 150 dpi even on a machine with 16 Mb or more RAM. Note that viewing and printing these files requires at least 8 Mb of RAM in Windows, but even with 16 Mb of RAM it will not be very fast.