17

Answers
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8
Labelled spanning trees without edge crossings
6
coordinates of vertices of regular simplex
5
Ordered geometries from convex subsets of the plane
4
What are the Applications of Hypergraphs
10
Continuous automorphism groups of normed vector spaces?
5
Combinatorial distance ≡ Euclidean distance
3
Is the theory of incidence geometry complete?
2
Origins of Mathematical Symbols/Names
18
How much choice is needed to show that formally real fields can be ordered?
5
Nice proof of the Jordan curve theorem?
5
Chromatic number of graphs of tangent closed balls
2
How many of the true sentences are provable?
5
Generalizations of Planar Graphs
11
Extremal question on matrices
5
Combinatorial results without known combinatorial proofs
5
Which graphs have incidence matrices of full rank?
6
Erdős–Stone theorem type edge density estimates for bipartite graphs?