Explorations in Modern Mathematics

Welcome to the home of Explorations in Modern Mathematics, an OER written by Mike Janssen.

Version 1 of the text, dated July 2025, is here.

Version 2 of the text, dated November 2026, is here. Version 2 contains several updates including:

• clarifications/typos fixed;
• additional exercises in certain sections;
• interactive widgets and visualizations for exploring many concepts in the text. Note that these were created with the help of Claude Opus 5.5.