Pigeon Hole Principle in Unit Disk
131185
For fixed $z_i$s inside the unit disc, can we always choose $a_i$s such that $\left|\sum_{i=1}^n a_iz_i\right|<\sqrt3$?
20722
Fixed points in random permutation
19101
Permutation induced by a partition
104309
Pigeon-Hole Principle Common Sum
111954
Computing the cardinality of a combinatorial set
117434
Counting integer partitions of n into exactly k distinct parts size at most M
94058
Applying the Berry-Esseen theorem to non-identically distributed summands
61446
Fixed point of interior of closed disk
62901
Bound for Analytic Function on Unit Disk
82872
Combinatorial proof involving partitions and generating functions
10763
Expectation that the Distance Between two Points in the Unit Disc is 1
153651
Countable partition in atoms
107964
Simple combinatorics problem.
82958
Maximize the product of the partitions of an integer
134440
An unexpected application of non-trivial combinatorics
144650
Uniform distribution on unit disk
97254
What is the proof of permutations of similar objects?