There is a lot of less popular math problems in spatial and high dimentional geometry, packing, topology. Nice example of something many of us could try: https

There is a lot of less popular math problems in spatial and high dimentional geometry, packing, topology. Nice example of something many of us could try: https://news.ycombinator.com/item?id=45694856 https://news.ycombinator.com/item?id=45694856