This web site features an extensive section concerning cryptography: A Cryptographic Compendium And here is a direct link to its index page. Originally, I had among the pages on other topics, a single page about a map projection of my own. Now, having once again written, this time to run on a PC, a program to draw maps in a variety of projections, this site now also contains: Map Projections an extensive series of pages describing several map projections and how to construct them. Note that there are some other topics addressed within the section on cryptography as well. Error-Correcting Codes have a page, and the section on teletypewriter ciphers illustrates many codes used with teletypewriters; more on this topic is at a page within the section on data compression. Particularly intriguing may be the proposal for representing a large repertoire of characters within 5-level code. For quicker loading, the section on Featured Images which addresses a number of topics for which I have created drawings, but not a full page concerning the topic as yet, has been taken off the main page. It includes an image showing the purported relation of pi and the golden ratio to the Great Pyramid, and a new item, showing a solid with both faces having octagonal symmetry and faces having pentagonal symmetry. As you may have noticed, there is now a link banner to the right on this page. Except for a nice desktop background, no compensation has been received for placing the banner on this page; thus, try not to think of it as advertising, but as information about a very enjoyable webcomic (which is also available for a reasonable price in the more convenient form of a TPB (trade paperback edition) at a comics store such as is likely to be near most viewers of this page). As the comic concerns mad scientists, somehow it felt appropriate to provide a link from this page. A brief page with a few annotations about the series is now on this site.

Latest New Additions

Major additions have been made to the page about using the roll of three identical ordinary six-siced dice for a greater number of purposes in such applications as role-playing games.

On the page about the games of Chivalry and Camelot, descriptions of the game of King's Court (also known as Supercheckers) and of the Strand War Game have been added.

On a page within the section on unit conversions, a discussion of the standard tournament sizes for boards for a number of different games has been added, as well as a note on the length measures of Barsoom.

Also for quicker loading, a page about What's New on the site, but from which I haven't had the heart to remove links to some of the older new things from, is on a separate page.

I will keep one highlight from the site on the front page, however:

this heptagonal tiling is from a section of the web site that discusses such matters as Penrose tilings.

Other attractive images on my site include one of the Riemann Zeta Function, what I think is a very nice map on the world based on Lambert's Conic Conformal Projection, a really colorful series of pages with drawings of computer front panels (of course, if you use Google, you can find actual *photographs* of nearly all the computers presented).

It's difficult to summarize the content of this site, but from the table below, you can see that in addition to the major sections on cryptography and map projections listed above, mathematics, board games, and computers are addressed here.

In brief, the available topics are:

When this page had a counter, the number of visitors recorded on the counter had reached about 107,000.

Copyright (c) 2000, 2001, 2002, 2004, 2005, 2008 John J. G. Savard

The term QUADIBLOC is the designation of a family of block ciphers described on these web pages; the description of these block ciphers, and a claim of trademark rights to the term QUADIBLOC is to be found on this page.