The fold-and-cut theorem states that any shape with straight sides can be cut from a single (idealized) sheet of paper by folding it flat and making a...
6 KB (649 words) - 11:46, 18 December 2024
cut. The solution, known as the fold-and-cut theorem, states that any shape with straight sides can be obtained. A practical problem is how to fold a...
37 KB (4,134 words) - 10:00, 2 May 2025
fold the paper flat, or to cut the paper into pieces and rearrange it, in such a way that the nine dots lie on a single line in the plane (see fold-and-cut...
13 KB (1,445 words) - 20:18, 5 February 2025
Kirigami (category Japanese words and phrases)
architecture Paper cutting Paper model Fold-and-cut theorem "Kirigami is an art form where paper is folded & cut to create beautiful designs". Wikimedia...
2 KB (245 words) - 09:29, 23 April 2025
Paper snowflake (category Paper folding)
mandatory folding. An online version of the craft is known as "Make-A-Flake", and was created by Barkley Inc. in 2008. Fold-and-cut theorem Kirigami Boeckmann...
1 KB (99 words) - 09:50, 26 July 2024
she published the first proof of the fold-and-cut theorem in mathematical origami. In graph drawing, Hutton and Lubiw found a polynomial time algorithm...
6 KB (544 words) - 11:25, 24 November 2024
given polygon can be cut from it with a single straight cut (the fold-and-cut theorem), and related origami design problems. Barequet et al. use straight...
20 KB (2,179 words) - 06:34, 29 August 2024
theorem in its basic form was based on the observation that the rotational symmetries of a crystal are usually limited to 2-fold, 3-fold, 4-fold, and...
17 KB (2,474 words) - 13:50, 6 November 2024
Lang using tree structures and circle packing to automate the design of origami folding patterns, the fold-and-cut theorem according to which any polygon...
6 KB (568 words) - 13:48, 5 January 2025
from the cut locus and p {\displaystyle p} . This idea is used in the local Laplacian comparison theorem and the local Hessian comparison theorem. These...
8 KB (1,042 words) - 20:34, 26 June 2024
constructed from existing lines and points. When folding rigid origami flat, Kawasaki's theorem and Maekawa's theorem restrict the folding patterns that are possible...
7 KB (783 words) - 06:30, 9 April 2024
The Alexandrov uniqueness theorem is a rigidity theorem in mathematics, describing three-dimensional convex polyhedra in terms of the distances between...
15 KB (1,743 words) - 06:50, 27 May 2025
Brouwer's fixed-point theorem is a fixed-point theorem in topology, named after L. E. J. (Bertus) Brouwer. It states that for any continuous function f...
61 KB (8,516 words) - 04:02, 21 May 2025
Craig's interpolation theorem (mathematical logic) Cut-elimination theorem (proof theory) Deduction theorem (logic) Diaconescu's theorem (mathematical logic)...
78 KB (6,293 words) - 12:16, 2 May 2025
known as Euclidean geometry, the Poncelet–Steiner theorem is one of several results concerning compass and straightedge constructions having additional restrictions...
94 KB (13,108 words) - 16:40, 26 May 2025
Homomorphism density (section Turan's Theorem)
An extension of Mantel's Theorem provides an explicit lower bound on triangle densities in terms of edge densities. Theorem (Goodman). t ( K 3 , G ) ≥...
12 KB (2,300 words) - 10:57, 6 January 2024
Net (polyhedron) (redirect from Polyhedra folding and unfolding)
which can be folded (along edges) to become the faces of the polyhedron. Polyhedral nets are a useful aid to the study of polyhedra and solid geometry...
13 KB (1,435 words) - 21:51, 17 March 2025
Cutwidth (redirect from Folding number)
MR 3195329. Leighton, Tom; Rao, Satish (1999). "Multicommodity max-flow min-cut theorems and their use in designing approximation algorithms". Journal of the ACM...
20 KB (2,377 words) - 05:59, 16 April 2025
n-holed tori (or, rarely, n-fold tori). The terms double torus and triple torus are also occasionally used. The classification theorem for surfaces states that...
40 KB (5,166 words) - 11:29, 5 May 2025
various Italian cheeses (typically mozzarella) and usually Italian cold cuts (typically salami, capocollo, and bresaola) or vegetables, served hot. The dough...
5 KB (443 words) - 17:44, 14 April 2025
one can first "accordion fold" the strip in its wide direction back and forth using an even number of folds. With two folds, for example, a 1 × 1 {\displaystyle...
88 KB (9,636 words) - 15:46, 20 May 2025
curvature/flat, and negative curvature/hyperbolic – and the geometrization conjecture (now theorem) in 3 dimensions – every 3-manifold can be cut into pieces...
36 KB (4,214 words) - 23:46, 29 May 2025
setting k = 2 results in 2-fold cross-validation. In 2-fold cross-validation, we randomly shuffle the dataset into two sets d0 and d1, so that both sets are...
44 KB (5,781 words) - 09:14, 19 February 2025
Quasicrystal (redirect from Aperiodic order and disorder)
to the classical crystallographic restriction theorem, can possess only two-, three-, four-, and six-fold rotational symmetries, the Bragg diffraction...
55 KB (5,744 words) - 22:28, 28 April 2025
Squaring the circle (category Straightedge and compass constructions)
proven to be impossible, as a consequence of the Lindemann–Weierstrass theorem, which proves that pi ( π {\displaystyle \pi } ) is a transcendental number...
45 KB (4,922 words) - 22:07, 19 April 2025
Terry Gilliam (category British album-cover and concert-poster artists)
(2009), The Zero Theorem (2013), and The Man Who Killed Don Quixote (2018). Gilliam was born in Minnesota, but spent his high school and college years in...
56 KB (5,155 words) - 20:01, 24 May 2025
Hypergeometric function (redirect from Gauss's hypergeometric theorem)
transformation to change z = −1 to z = 1 and then using Gauss's theorem to evaluate the result. A typical example is Kummer's theorem, named for Ernst Kummer: 2 F...
38 KB (6,920 words) - 21:17, 14 April 2025
Field (mathematics) (section Real and complex numbers)
symmetries of field extensions, provides an elegant proof of the Abel–Ruffini theorem that general quintic equations cannot be solved in radicals. Fields serve...
87 KB (10,305 words) - 18:58, 29 May 2025
Mathematical beauty (category Mathematics and art)
way (e.g., from an apparently unrelated theorem or a collection of theorems). A proof that is based on new and original insights. A method of proof that...
32 KB (3,732 words) - 06:26, 15 April 2025
The theorem is named for Anders Johan Lexell, who presented a paper about it c. 1777 (published 1784) including both a trigonometric proof and a geometric...
70 KB (9,234 words) - 14:52, 2 October 2024