You have reached the website of “Peering into Mathematics through Sage-colored Glasses”

Latest version!

• You can download the most recent draft of the text (draft 15, February 28th, 2019) by clicking here.
• Sources for draft15.
  • LyX source file
  • LaTeX export of the LyX source
• The following sources are a bit out-of-date (draft12, surprisingly). I will upload new sources Real Soon Now (TM).
  • LyX source file
  • LaTeX export of the LyX source
  • graphics archive (15 MB, you’ve been warned!)
Unpack the graphics archive in the same directory as the source file(s). It will extract into its own “graphics” folder, so you don’t have to worry about polluting anything. If you unpack it into a different folder you’ll have to change every blessed reference in the text from “graphics/...” to something else. If you choose to take that route despite all warnings to the contrary, we cannot take responsiblity for any ensuing loss of hair. You have been warned.
• Errata:
  • There aren’t any mistakes. (As far as we know.)
  • If you think you have found any, keep quiet and don’t tell anyone! You could shatter our self-esteem.
  • Well, if you must be a nag: Email us

Older versions

• What happened to draft14?
  • It exists, but apparently John Perry forgot to upload it when I moved to draft15. He doesn’t see the point of uploading it now, but if someone really wants it, s/he can email him using the &lquo;nag” address above.
• Link to draft13.
  • Errors found in draft13.
• Link to draft12.
  • Errors found in draft12.
• You can download the “first” draft of the text by clicking here, though that would seem as pointless as interstellar travel without a towel.
• Errata: An outdated and highly incomplete list of known errors in the “old” draft of the PDF file above is available here.