I’m Andrew Hogan. I write about questions that begin with numbers, physical things, and ordinary experiences.
Most articles begin with an exercise, work through an explanation, and leave room for thoughts and further questions. You can try a calculation, follow a construction, or bring a different approach to the same problem.
These pages are a way to share what I have been thinking about and to learn from what other people notice. Corrections, alternative constructions, and questions are welcome.
Please email me at [email protected].