Errata
Mathematics rewards corrections.
This page is the canonical place for substantive corrections to either edition. Corrections will be identified by edition, chapter, and location so that nobody has to reverse-engineer what changed.
Current status
No errata are posted at this time.
That is not a metaphysical claim that the books are perfect. It means there are no corrections currently published on this companion site.
How corrections will be recorded
Each item will identify the affected edition, chapter, page or section when known, the original text or issue, and the correction. Material changes will remain visible rather than silently disappearing.
Publisher corrections and future-printing changes can also be noted here when they are confirmed.