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Results tagged with extremal-combinatorics
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user 105651
50
votes
7
answers
3k
views
Dividing a cake between $n-1$, $n$, or $n+1$ guests
A housewife is waiting for guests and has prepared a cake. She doesn't know how many guests will come, but it will be $n-1$, $n$, or $n+1$.
What is the minimal number $f(n)$ of pieces the cake s …
- 4,535
21
votes
0
answers
439
views
Straight-line drawing of regular polyhedra
Find the minimum number of straight lines needed to cover a crossing-free straight-line drawing of the icosahedron $(13\dots 15)$ and of the dodecahedron $(9\dots 10)$ (in the plane).
For exampl …
- 4,535