User:A.R.Hithesh/Books/Book of unsolved problems

A challenging book

 * Additive number theory
 * Algebra
 * Algebraic geometry
 * Aliquot sequence
 * Amicable numbers
 * Bass conjecture
 * Beal conjecture
 * Betrothed numbers
 * Birch and Swinnerton-Dyer conjecture
 * Birch–Tate conjecture
 * Borel conjecture
 * Brocard's problem
 * Carathéodory conjecture
 * Carmichael's totient function conjecture
 * Casas-Alvero conjecture
 * Catalan's conjecture
 * Church–Turing thesis
 * Clifford's theorem on special divisors
 * Collatz conjecture
 * Combinatorics
 * Congruent number
 * Coprime integers
 * Cube (algebra)
 * Cuboid conjectures
 * De Bruijn–Newman constant
 * Divisor summatory function
 * Eilenberg–Ganea conjecture
 * Erdős–Burr conjecture
 * Erdős–Straus conjecture
 * Erdős–Ulam problem
 * Euler brick
 * Farrell–Jones conjecture
 * Fermat's Last Theorem
 * Fermat–Catalan conjecture
 * Fröberg conjecture
 * Fujita conjecture
 * Ganea conjecture
 * Gauss circle problem
 * Generalized Riemann hypothesis
 * Generalized taxicab number
 * Gilbreath's conjecture
 * Glossary of arithmetic and diophantine geometry
 * Goldbach's conjecture
 * Goormaghtigh conjecture
 * Grand Riemann hypothesis
 * Grimm's conjecture
 * Grothendieck–Katz p-curvature conjecture
 * Hadamard matrix
 * Hall's conjecture
 * Hilbert's eleventh problem
 * Hilbert's fifteenth problem
 * Hilbert's ninth problem
 * Hilbert's problems
 * Hilbert's sixteenth problem
 * Hilbert's twelfth problem
 * Hilbert–Pólya conjecture
 * Hilbert–Smith conjecture
 * Hodge conjecture
 * Homological conjectures in commutative algebra
 * Jacobian conjecture
 * Jacobson's conjecture
 * Kaplansky's conjecture
 * Kepler conjecture
 * Kummer–Vandiver conjecture
 * Köthe conjecture
 * Landau's problems
 * Lander, Parkin, and Selfridge conjecture
 * Lehmer's totient problem
 * Leopoldt's conjecture
 * Lindelöf hypothesis
 * List of things named after Leonhard Euler
 * List of unsolved problems in mathematics
 * List of unsolved problems in physics
 * Littlewood conjecture
 * Lychrel number
 * Magic square
 * Manin conjecture
 * Millennium Prize Problems
 * Minimum overlap problem
 * Montgomery's pair correlation conjecture
 * N conjecture
 * Nakai conjecture
 * Navier–Stokes existence and smoothness
 * Normal number
 * Number theory
 * P versus NP problem
 * Perfect number
 * Pierce–Birkhoff conjecture
 * Pierre Deligne
 * Pollock's conjectures
 * Quasiperfect number
 * Ramsey theory
 * Ramsey's theorem
 * Rendezvous problem
 * Resolution of singularities
 * Riemann hypothesis
 * Sato–Tate conjecture
 * Scholz conjecture
 * Section conjecture
 * Self-avoiding walk
 * Sendov's conjecture
 * Serre's conjecture II (algebra)
 * Serre's multiplicity conjectures
 * SIC-POVM
 * Skolem problem
 * Smale's problems
 * Special values of L-functions
 * Standard conjectures on algebraic cycles
 * Symmetric group
 * Szemerédi's theorem
 * Szpiro's conjecture
 * Tate conjecture
 * Tunnell's theorem
 * Union-closed sets conjecture
 * Van der Corput's method
 * Van der Waerden number
 * Virasoro conjecture
 * Vlasov equation
 * Vojta's conjecture
 * Waring's problem
 * Weird number
 * Wild problem
 * Yang–Mills existence and mass gap
 * Zeeman conjecture