4: Groups Acting on Sets Last updated Feb 1, 2025 Save as PDF 3.6: Exercises 4.1: Definition and examples Page ID180003 James S. MilneUniversity of Michigan ( \newcommand{\kernel}{\mathrm{null}\,}\) 4.1: Definition and examples4.2: Permutation groups4.3: The Todd-Coxeter algorithm4.4: Primitive actions4.5: Exercises