“If you want a property for 3-manifolds, check it 1 dimension lower. It’s either easy or false.”
– Topology professor
“I’m here. I’m infinitely close to you. I’m sorry.”
– Topology professor explaining set density
I’m substituting for a 9th- and 10th-grade math teacher, and she has a number of neat posters on her wall, ranging from the application of mathematics to robotics, to its role in black hole physics, to its cultural impact on the NBA.
Here’s the description of the poster set, which comes from the AMS:
The Mathematical Moments program promotes appreciation and understanding of the role mathematics plays in science, nature, technology, and human culture.
The AMS has many, many more online, many of which are accompanied by podcasts, shorter versions, and translations into a variety of languages. Pictured are:
Check them out and enjoy!