Template:Mathematical problems

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This template does not display in the mobile view of Wikipedia; it is desktop only. See Template:Navbox visibility for a brief explanation.

This is a navigational template created using {{navbox}}. It can be transcluded on pages by placing {{Mathematical problems}} below the standard article appendices.

Initial visibility

This template's initial visibility currently defaults to autocollapse, meaning that if there is another collapsible item on the page (a navbox, sidebar, or table with the collapsible attribute), it is hidden apart from its title bar; if not, it is fully visible.

To change this template's initial visibility, the |state= parameter may be used:

{{Mathematical problems|state=collapsed}} will show the template collapsed, i.e. hidden apart from its title bar.
{{Mathematical problems|state=expanded}} will show the template expanded, i.e. fully visible.

Templates using the classes class=navbox ({{navbox}}) or class=nomobile ({{sidebar}}) are not displayed in article space on the mobile web site of English Wikipedia. Mobile page views accounted for 60% to 70% of all page views from 2020 through 2025. Briefly, these templates are not included in articles because 1) they are not well designed for mobile, and 2) they significantly increase page sizes—bad for mobile downloads—in a way that is not useful for the mobile use case. You can review/watch phab:T124168 for further discussion.

TemplateData

A navigational box that can be placed at the bottom of articles.

Template parameters[Edit template data]
Parameter		Description	Type	Status
State	`state`	The initial visibility of the navbox Suggested values `collapsed` `expanded` `autocollapse`	String	suggested

Template transclusions

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The above documentation is transcluded from Template:Navbox documentation.
Editors can experiment in this template's sandbox and testcases pages.
Subpages of this template.

v t e Well-known mathematical problems
Number theory & algebra	Basel problem Boolean Pythagorean triples problem Class number problem Congruence lattice problem Finite lattice representation problem Invariant subspace problem Kadison–Singer problem Lattice problem Littlewood–Offord problem Moment problem Hamburger moment problem Hausdorff moment problem Stieltjes moment problem Parity problem (sieve theory) Waring's problem Whitehead problem Zero-sum problem Znám's problem
Geometry & topology	Alhazen's problem Boundary value problem Cramer–Castillon problem Dirichlet problem Dividing a square into similar rectangles Hadwiger–Nelson problem Illumination problem Klee's measure problem Napkin ring problem Napoleon's problem Necklace splitting problem Newton's minimal resistance problem No-three-in-line problem Orchard-planting problem Plateau's problem Prescribed Ricci curvature problem Prescribed scalar curvature problem Regiomontanus' angle maximization problem Riemann–Hilbert problem Schoenflies problem Spherical Bernstein's problem Square trisection Squaring the square Tarski's circle-squaring problem Turán's brick factory problem Vertex enumeration problem Yamabe problem Zarankiewicz problem
Probability & statistics	Behrens–Fisher problem Birthday problem Erdős discrepancy problem Monty Hall problem Newton–Pepys problem
Puzzles & recreational math	Block-stacking problem Bristol Bridges Walk Carpenter's rule problem Cheryl's Birthday Clock angle problem Dining cryptographers problem Dissection problem Eight queens puzzle Firing squad synchronization problem Happy ending problem Josephus problem Kirkman's schoolgirl problem Knight's tour Kolkata Paise Restaurant Problem The monkey and the coconuts Mountain climbing problem Mrs. Miniver's problem Oberwolfach problem Rope-burning puzzle Seven Bridges of Königsberg Snellius–Pothenot problem Social golfer problem Stable matching problem Stable roommates problem Traveling tournament problem Water pouring puzzle
Optimization & algorithms	Circulation problem Minimum-cost flow problem Network simplex algorithm
Computer science & logic	Halting problem Hurwitz problem