mathematical problem
problem that can be possibly solved via mathematics
Josephus problem
mathematical counting-out question
Plateau's problem
in calculus of variations, the problem proving the existence of a minimal surface with a given boundary
wheat and chessboard problem
mathematical problem
moment problem
trying to map moments to a measure that generates them
computational problem
problem of finding an effective algorithm which solves a given problem
Langford pairing
Sequence of integers
clock angle problem
Mathematical question
Heilbronn triangle problem
on point sets with no small-area triangles
map folding
combinatorial problem
Orchard-planting problem
geometry; how many 3-point lines can n points form
Paper bag problem
mathematical problem
related rates
Problems that make use of the relations to rates of change
differential equation
mathematical equation involving derivatives of an unknown function
Illumination problem
mathematical problem
assignment problem
combinatorial optimization problem
Basel problem
mathematical problem
Closest pair of points problem
the problem of finding the two points with minimum distance from a larger finite set of points
cutting stock problem
mathematical problem in operations research
boundary value problem
differential equation together with a set of additional constraints (boundary conditions)
kissing number problem
problem of determining the maximum number of non-overlapping spheres that can be simultaneously tangent to another sphere of the same size
logic puzzle
puzzle deriving from the mathematics field of deduction
integrable system
property of certain dynamical systems
inscribed square problem
unsolved problem in geometry of whether every simple closed curve in the plane contains four points at the corners of a square
moving sofa problem
mathematical problem about moving the largest possible shape around a corner
dining cryptographers problem
protocol for secure multi-party computation of the boolean-OR function
crossed ladders problem
mathematical puzzle
bankruptcy problem
problem in mathematical sociology of distributing money among people with different claims when the amount is insufficient to satisfy all claims
Lattice problem
optimization problem in computer science
Parity problem
question of how many primes less than a given integer have an even (or odd) number of prime factors
unknotting problem
determining whether a knot is the unknot
The Weber Problem
problem of finding a point minimizing the sum of weighted distances from given (point, weight) pairs
block-stacking problem
mathematical problem
The spider and the fly problem
Geometric problem
Riemann hypothesis
conjecture in mathematics linked to the repartition of prime numbers
birthday problem
mathematical problem
zero-sum problem
mathematical problem
dissection problem
the problem of partitioning a given shape into pieces that can be rearranged to form a second given shape
dissection problem
the problem of partitioning a given shape into pieces that can be rearranged to form a second given shape
coupon collector's problem
probability Theory
secretary problem
mathematical problem
Cauchy problem
mathematical problem
well-posed problem
functional relationship F between some input x and output y such that y=g(x) and g is Lipschitz in a neighbourhood of every x
Landau's problems
four basic unsolved problems about prime numbers: Goldbach’s conjecture; twin prime conjecture; Legendre’s conjecture; whether there are infinitely many primes of the form 𝑛²+1
Whitehead problem
the problem of whether an abelian group 𝐴 satisfying Ext¹(𝐴,ℤ)=0 is necessarily free, now known to be independent of ZFC
German tank problem
estimating the maximum of a discrete uniform distribution from sampling without replacement, historically from predicting German tank production based on ascending serial numbers in tanks lost in combat