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graph theory
24
number theory
21
ramsey theory
9
additive combinatorics
8
analysis
6
chromatic number
6
geometry
6
covering systems
4
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19 more subjects
turan number
4
divisors
3
additive basis
2
convex
2
cycles
2
discrepancy
2
distances
2
hypergraphs
2
irrationality
2
set theory
2
combinatorics
1
group theory
1
irrational
1
polynomials
1
powerful
1
sidon sets
1
squares
1
topology
1
unit fractions
1
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1 problem
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declared disproved
erdos:1147
Erdős problem 1147
irrational
additive basis
N/A