Merge pull request #10 from UBCMath/about_notes

Update 'about these notes' section

Author: cbm755

Chapters/chapter1.tex

@@ -220,14 +220,17 @@ \section{About These Notes}
 definitions of the key concepts: linear combination, span, linear independence, basis and dimension. He also added material in Chapter 5 on the use of complex arithmetic in complex linear systems and determinants. 
 Joel Feldman contributed an additional topics section to Chapter 3 on the checksum technique. 
 Hand drawn resistor network diagrams were replaced throughout the text by Egor Dontsov. The material on 
-complex numbers was split off into a separate chapter.  
-\item[2017:] Brian Wetton corrected errors in the notes pointed out by the 2016 class and added a discussion in the first section of Chapter 4 on the interpretation of matrix vector multiplication as a linear combination of the columns of the matrix. 
+complex numbers was split off into a separate chapter.
+\item[2017:] Brian Wetton corrected errors in the notes pointed out by the 2016 class and added a discussion in the first section of Chapter 4 on the interpretation of matrix vector multiplication as a linear combination of the columns of the matrix.
+\item[2025:] Colin B. Macdonald started tracking changes in a Git repo,
+posted these notes to GitHub, and fixed some typos.
 \end{description} 
 Further revisions are planned. There will be additional MATLAB
-material added to the notes and additional problems and solutions. The Chapter on complex numbers needs some revision. 
+material added to the notes and additional problems and solutions. The Chapter on complex numbers needs some revision.
 If you have any suggestions for additional
-material or ways to improve the presentation, please send your ideas
-to Brian Wetton ({\tt wetton@math.ubc.ca}).
+material or ways to improve the presentation, please contact the maintainers
+at
+{\tt https://github.com/UBCMath/Math152notes}
 
 
 % \end{document}