Welcome to the HOME page of my website.

This has been updated since my 75th birthday in May 2016.

Feel free to use information about my research as a resource, or download a paper. A number of new papers (and drafts) have been added. There is news about recent changes on this site (made on Saturday, Aug 13 Thursday, August 17, 2017 2016) , and also drafts of earllier papers and links to other sites of interest.
See below for more information, including my students and my supervisors/mentors back via Newton and beyond.

Downloads: Research Papers in PDF format, Current writing in draft, Selected Lectures, Curriculum Vitae.

News: A list of information on updates to focus on the most recent additions, including new papers, information on books including Fermat's Last Theorem (3rd Edition with Ian Stewart) and Intelligence, Learning and Understanding: A Tribute to Richard Skemp (ed. with Michael Thomas). Subsequent books include How Humans Learn to Think Mathematically (also available in Japanese and Italian), The Foundations of Mathematics (2nd edition with Ian Stewart), also available in Polish, Japanese).

David retired in September 2006 and is now Emeritus Professor of Mathematical Thinking at Warwick
His retirement conference Retirement as Process and Concept, shared with Eddie Gray at Charles University Prague, is available for download and pictures of the conference are here. David now enjoys important things: grandchildren, music, theatre, and other joys. In mathematics education this means turning attention from research articles to thinking profound thoughts, some of which may be published from time to time and updating his mathematics textbooks with Ian Stewart to implement new insights into mathematics as a result of his theoretical developments in mathematical thinking.

His first foray into something different is the book Memories of Wellingborough Grammar School, with brother Graham, a social document remembering the school they attended in the 1950s with its focus on academic and sporting excellence. Two new books in the series were published on December 11th 2012: Mr Woolley and the War Years, Letters to Mr Woolley in the War Years, followed by Mr Wrenn's School in 2013.

He is currently working on a new edition of Complex Analysis with Ian Stewart to incorporate his insights into the dynamic ideas of infinitesimals which arise out of the way in which the human eye tracks a moving object by locking on to it and following it smoothly. As a result we imagine the number line to have points which can be fixed and points that can vary, giving the foundational idea of a number line with points that may be constant or variable. This offers an alternative vision of the number line including infinitesimals.

Links: An out-of-date list of academic links. For other links, go to my personal home- page.

e-mail: to contact me directly.


Charlotte Freya Tall born June 26th 2013.



last modified: Thursday, May 19, 2011