Hans-Peter E. Kristiansen

less info
505 reputation
412
bio website none
location Aarhus, Denmark
age 38
visits member for 2 years, 8 months
seen Jun 2 at 5:59

Stud. Scient. Casual LaTeX user. TikZ newbie.


Jun
2
comment solve the equation for x
You need to post what you have tried, and where you got stuck.
Mar
19
asked Naive calculations with infinite series
Feb
16
asked How I cut my orange - spherical volume integral
Dec
15
awarded  Yearling
May
6
awarded  Caucus
Dec
15
awarded  Yearling
Aug
12
awarded  Scholar
Aug
12
accepted Are non-circular manholes possible?
Aug
12
comment Are non-circular manholes possible?
This is not a complete answer, but it provides a non-circular example. I believe that a full description of all shapes will be too difficult, so I will accept this answer.
Aug
1
comment Are non-circular manholes possible?
@BrunoLeFloch: Yes your variant(it can be simplified to a infinite shaft - no plane is needed) is arguably more beautiful.
Aug
1
revised Are non-circular manholes possible?
added 103 characters in body
Aug
1
awarded  Self-Learner
Aug
1
awarded  Teacher
Aug
1
comment Are non-circular manholes possible?
@MichaelHardy: I do not think that they are the only ones - see my own answer.
Aug
1
answered Are non-circular manholes possible?
Jul
31
awarded  Commentator
Jul
31
comment Are non-circular manholes possible?
@MichaelHardy: Your answer is by far the best, as it gives an example of a useful manhole cover. -but I am still hoping for examples of other weird shapes that would work. -and maybe a description of what properties these shapes needs to obey.
Jul
31
comment Are non-circular manholes possible?
"Are non-circular manholes possible?" is the title meant to intrigue you. I am interested in the math. If you wanted to you could build a triangular purple manhole cover in styrofoam - I do not care. -1
Jul
31
comment Are non-circular manholes possible?
I specified the cover to be flat rigid and the same shape of the hole. Obviously you can cover a small hole with a big cover.
Jul
31
awarded  Critic