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Problems · Vela Mathematics Program

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62 problems · 1/2NumberSourcesGraph view
declared solved · $100erdos:54
Erdős problem 54
number theoryramsey theoryN/A
declared solved · $250erdos:55
Erdős problem 55
number theoryramsey theoryN/A
declared solvederdos:136
Erdős problem 136
graph theorypossible
declared solvederdos:186
Erdős problem 186
additive combinatoricsA389784
declared solvederdos:190
Erdős problem 190
additive combinatoricsarithmetic progressionspossible
declared solvederdos:223
Erdős problem 223
geometrydistancespossible
declared solvederdos:262
Erdős problem 262
irrationalityN/A
declared solvederdos:297
Erdős problem 297
number theoryunit fractionsA092670
declared solvederdos:300
Erdős problem 300
number theoryunit fractionsA390393
declared solvederdos:320
Let S(N)S(N) count the distinct values of ∑n∈A1/n\sum_{n\in A} 1/n over A⊆{1,…,N}A\subseteq\{1,\dots,N\}. Estimate S(N)S(N).
number theoryunit fractionsA0722072 sources
declared solvederdos:360
Erdős problem 360
number theorypossible
declared solvederdos:438
Erdős problem 438
number theoryA363069
declared solvederdos:440
Erdős problem 440
number theoryN/A
declared solvederdos:446
Erdős problem 446
number theorydivisorsA074738
declared solvederdos:482
Erdős problem 482
number theoryA004539
declared solvederdos:504
Erdős problem 504
geometryN/A
declared solvederdos:526
Erdős problem 526
probabilitygeometryN/A
declared solvederdos:534
Erdős problem 534
number theoryintersecting familyA387543 · A387698
declared solvederdos:542
Erdős problem 542
number theoryN/A
declared solvederdos:581
Erdős problem 581
graph theorypossible
declared solvederdos:603
Erdős problem 603
combinatoricsset theoryN/A3 sources
declared solvederdos:606
Erdős problem 606
geometryN/A
declared solvederdos:690
Erdős problem 690
number theorypossible4 sources
declared solvederdos:721
Erdős problem 721
number theoryadditive combinatoricsramsey theoryA171081
declared solvederdos:735
Erdős problem 735
geometryN/A
declared solvederdos:747
Erdős problem 747
combinatoricshypergraphsN/A
declared solvederdos:758
Erdős problem 758
graph theorychromatic numberpossible
declared solvederdos:759
Erdős problem 759
graph theorychromatic numberpossible
declared solvederdos:777
Erdős problem 777
graph theorycombinatoricsN/A
declared solvederdos:783
Erdős problem 783
number theoryN/A3 sources
declared solvederdos:784
Erdős problem 784
number theoryN/A
declared solvederdos:834
Erdős problem 834
graph theoryhypergraphsN/A
declared solvederdos:841
Erdős problem 841
number theoryA092487
declared solvederdos:858
Erdős problem 858
number theoryprimitive setsN/A4 sources
declared solvederdos:861
Erdős problem 861
number theorysidon setsA143824 · A227590 · A003022 · A143823
declared solvederdos:882
Erdős problem 882
number theoryprimitive setspossible
declared solvederdos:896
Erdős problem 896
number theorypossible3 sources
declared solvederdos:915
Erdős problem 915
graph theoryN/A
declared solvederdos:948
Erdős problem 948
number theoryramsey theoryN/A3 sources
declared solvederdos:988
Erdős problem 988
discrepancypossible
declared solvederdos:989
Erdős problem 989
discrepancypossible
declared solvederdos:1001
Erdős problem 1001
number theorydiophantine approximationN/A
declared solvederdos:1012
Erdős problem 1012
graph theory
declared solvederdos:1015
Erdős problem 1015
graph theoryramsey theorypossible
declared solvederdos:1018
Erdős problem 1018
graph theoryplanar graphsN/A
declared solvederdos:1024
Erdős problem 1024
graph theoryhypergraphspossible
declared solvederdos:1025
Erdős problem 1025
combinatoricspossible
declared solvederdos:1069
Erdős problem 1069
geometrypossible
declared solvederdos:1079
Erdős problem 1079
graph theoryturan numberN/A
declared solvederdos:1089
Erdős problem 1089
geometrydistancespossible3 sources

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