Timeline for What's a great christmas present for someone with a PhD in Mathematics?
Current License: CC BY-SA 4.0
12 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Nov 8, 2023 at 17:58 | comment | added | Michael Hardy | amazon.com/Acme-Klein-Bottle-Handmade-Glass/dp/B017UY60MK Are there more symmetrical Klein bottles than this one (which everybody has seen a million times)? | |
| Dec 14, 2020 at 17:50 | comment | added | Rushabh Mehta | I had one of these, but my sister took it to her school for a show and tell day without my permission, and I was returned a box full of glass shards. | |
| Dec 14, 2020 at 11:48 | comment | added | Mateen Ulhaq | I prefer an edible, non-healthy, sugar-full torus. | |
| Dec 14, 2020 at 10:21 | comment | added | Askar Kalykov | Well, at least a projection of it... | |
| Dec 13, 2020 at 14:28 | comment | added | Student | There's a Klein bottle opener. | |
| Dec 13, 2020 at 1:00 | comment | added | AlexArvanitakis | if you're really cheap you can turn the label of an e.g. water bottle into a Moebius strip. | |
| Dec 13, 2020 at 0:33 | comment | added | Moshe Katz | My wife bought one of these for me, and I can confirm that it is a good gift (I'm not even in math, I'm in computer science). Before she bought it, she asked my brother if it was a good idea and he said, "of course!" She asked, "but what's the point of it?" He replied, "that it's a Klein Bottle." | |
| Dec 12, 2020 at 16:55 | comment | added | Bob Jarvis - Слава Україні | THE CUCKOO'S EGG!!!!!!!!!! | |
| Dec 12, 2020 at 2:46 | comment | added | Alexandre Eremenko | I also confirm, and used this many times for all kinds of gifts to mathematicians. They also have scarfs, knit hats and many other non-orientable things for sail. | |
| Dec 12, 2020 at 1:02 | history | made wiki | Post Made Community Wiki by François G. Dorais | ||
| Dec 11, 2020 at 23:24 | comment | added | KConrad | I can confirm that this is a good answer. A former high school math teacher I know keeps his copy on display in the kitchen. | |
| Dec 11, 2020 at 23:02 | history | answered | J.J. Green | CC BY-SA 4.0 |