Acknowledgements

We used computers running on Linux O/S for preparing the Draft of this book, including all the drawings, demonstration program code, text processing, spelling check, index preparation, etc.

The authors thank Linux and GNU community – starting with Linus Torvalds and Richard Stallman – for providing a dependable, elegant and pleasant working platform. We especially appreciate the fact that while we were preparing this book, we did not have to worry about viruses, bloated system resources usage or the “Blue Death”.

We used Latex (Leslie Lamport) and Tex (Prof. Donald Knuth) for the text preparation. XFIG, PSTricks, gnuplot and metapost were used to prepare various diagrams, graphs etc. Perl (Larry Wall) was used extensively for ...

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