Timeline for Polyhedron not circumscribed about a sphere

9 events

when toggle format	what		by	license	comment
Jan 19, 2019 at 13:09	history	edited	Carlo Beenakker	CC BY-SA 4.0	http --> https
Jun 23, 2014 at 13:14	comment	added	shadow10		Oh thank you @CarloBeenakker I did miss something obvious. My apologies, thank you for clearing it up.
Jun 23, 2014 at 13:07	comment	added	Carlo Beenakker		@shadow10 --- each face contributes the same amount $2\pi$ in absolute value to $\Sigma$, so $\Sigma=(N_{\rm white}-N_{\rm black})\times 2\pi<0$ if there are more black than white faces.
Jun 23, 2014 at 12:52	comment	added	shadow10		I have a question, how can we ensure $\Sigma<0$? The black faces may contribute angular sum small enough to keep the sum positive. Am I missing something obvious? Thanks.
Jun 23, 2014 at 12:40	comment	added	Todd Trimble		Very impressive. I may just have to buy this book.
Jun 23, 2014 at 12:19	history	edited	Carlo Beenakker	CC BY-SA 3.0	added 945 characters in body
Jun 23, 2014 at 12:06	vote	accept	shadow10
Jun 23, 2014 at 12:01	history	edited	Carlo Beenakker	CC BY-SA 3.0	added 47 characters in body
Jun 23, 2014 at 11:54	history	answered	Carlo Beenakker	CC BY-SA 3.0