points on a 4D sphere Thank you for the article. I'm wondering whether the geometry of a "sphere" in flat space 4D would include any corners? How about in the exotic R4s? If so, how many corners would there be? Reply
Thank you for the article. I'm wondering whether the geometry of a "sphere" in flat space 4D would include any corners? How about in the exotic R4s? If so, how many corners would there be?