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Mar
24
awarded  Nice Question
Mar
21
awarded  Revival
Mar
20
comment Biggest Little Polyhedron
The Mathematica notebook is at the Community link.
Mar
20
answered Biggest Little Polyhedron
Mar
7
awarded  Nice Question
Mar
5
revised Integer hexagonal grid variations for Harborth
added 210 characters in body
Feb
12
accepted Prove a length of 6 in a triangle diagram.
Feb
12
awarded  Inquisitive
Feb
11
comment Prove a length of 6 in a triangle diagram.
That's a lot more elegant than what I have. I'll see if someone posts something even better.
Feb
11
revised Prove a length of 6 in a triangle diagram.
Added propeller theorem
Feb
11
asked Prove a length of 6 in a triangle diagram.
Jan
13
awarded  Revival
Jan
13
answered $1^2+2^2+\cdots+24^2=70^2$ and squarily squaring the torus
Jan
13
revised Integer hexagonal grid variations for Harborth
added 2 characters in body
Jan
13
revised Integer hexagonal grid variations for Harborth
added 185 characters in body
Jan
13
asked Integer hexagonal grid variations for Harborth
Jan
9
answered Graph Theory book with lots of Named Graphs/ Graph Families
Oct
7
revised Can -9 to 9 be placed in 41 lines of zero?
Added exact values for more points.
Oct
7
revised Can -9 to 9 be placed in 41 lines of zero?
added 628 characters in body
Oct
7
comment Can -9 to 9 be placed in 41 lines of zero?
For a cubic curve, going through 2 rational points on a curve will go through a third. But I don't know why adding numbers to the lattice points allows for lots of consistent sums.