[This message is mainly directed at the 36 people who told me they'd like to buy reprinted copies of "Topos Theory".] I've now written to Roger Hill at Academic Press as follows:
>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> Dear Mr Hill,
I recently advertised for a second-hand copy of Topos Theory by Peter Johnstone, which you published in 1977 (London Mathematical Society Monographs no. 10). Instead of any offers, I received a number of commiserational messages saying how terrible it was that such a classic should have been allowed to go out of print. Im writing this letter to encourage you to consider reprinting the work. (You were suggested to me by Susan Overy as the most appropriate person to write to.) I am a research worker in topos theory. Johnstone's book is one of the tools of my trade and it is disappointing to me not to find it readily obtainable. Do you think there is any chance of a reprint, preferably in paperback? New books on toposes are in preparation, but to my mind the depth and authority of Johnstone's old book should give it a continuing place in the literature. The following people have told me that they will definitely buy a copy if the book is reprinted at not too high a price. Almost all of them responded within four days when I circularized an electronic mail message saying I was going to write to you. You will notice that many of them work (like myself) in computer science departments. The theory of toposes is now being enthusiastically embraced by quite a few workers in theoretical computer science, so the market for books on toposes is opening up. <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<< (Then I included the list of 36 names.) Steve Vickers. ==============================================================================