Sergio retweeted
Jun 9
Recursive sequence is eventually constant
#FloorFunction #NumberTheory
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3
175
May 12
Five vertices are chosen from a regular nonagon [INMO 2011]
#PigeonholePrinciple #FloorFunction #Geometry #Trapezoid #CombinatoricsProposed
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283
May 10
Cyclic inequality China 2011 national olympiad 1
#Inequalities #FloorFunction #Function #InequalitiesProposed
2
11
241
Mar 24
2
9
438
Feb 18
A 1 x 3 or 3 x 1 array with three different colours
#FloorFunction #CeilingFunction #Geometry #Rectangle #CombinatoricsProposed #Combinatorics #DoubleCounting
3
131
Jan 11
Every positive integer divides some number of a sequence
#FloorFunction #ModularArithmetic #Function #NumberTheory #NumberTheoryProposed
2
91
27 Dec 2025
Irrational number alpha, beta s.t. [n beta]\in [n alpha]
#Search #FloorFunction #ArithmeticSequence #NumberTheoryProposed #NumberTheory
5
128
23 Dec 2025
2
10
134
11 Dec 2025
5
109
19 Oct 2025
Chessboards
#Rectangle #FloorFunction #Induction #CombinatoricsProposed #Combinatorics #ExtremalCombinatorics #Hi
1
9
350
11 Oct 2025
Binomial-like expression for Fibnoacci-like sequence
#Algebra #Polynomial #FloorFunction #NumberTheoryProposed #NumberTheory
1
4
203
28 Sep 2025
Ratio of Trig Sums
#Ratio #Trigonometry #FloorFunction #Integration #Calculus #ComplexNumbers #GeometricSeries
2
1
5
487
13 Sep 2025
Nasty Floor Sum with Omega Function
#FloorFunction #PrimeFactor #Multiplicity #MobiusFunction #Sum #NumberTheory
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14
415
8 Sep 2025
2
5
276
27 Aug 2025
3
148
26 Aug 2025
1
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119