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1. Rigidity (mathematics): In mathematics, a rigid collection C of mathematical objects (for instance sets or functions) is one in which every c ∈ C is uniquely determined by less information about c than one would expect. The above statement does not define a ... (Mathematics) [100%] 2022-07-19 [Mathematical terminology]
2. Rigidity (electromagnetism): In accelerator physics, rigidity is the effect of particular magnetic fields on the motion of the charged particles. It is a measure of the momentum of the particle, and it refers to the fact that a higher momentum particle will ... (Physics) [100%] 2023-12-10 [Accelerator physics]
3. Rigidity (K-theory): In mathematics, rigidity of K-theory encompasses results relating algebraic K-theory of different rings. Suslin rigidity, named after Andrei Suslin, refers to the invariance of mod-n algebraic K-theory under the base change between two algebraically closed fields ... (K-theory) [100%] 2022-12-31 [Algebraic K-theory]
4. Rigidity: This page is deficient and requires revision. Please see Talk:Rigidity for further comments. (Mathematics) [100%] 2023-01-25
5. Rigidity (psychology): In psychology, rigidity or mental rigidity refers to an obstinate inability to yield or a refusal to appreciate another person's viewpoint or emotions characterized by a lack of empathy. It can also refer to the tendency to perseverate, which ... (Philosophy) [100%] 2023-11-09 [Cognitive psychology]
6. Rapidity: In relativity, rapidity is commonly used as a measure for relativistic velocity. Mathematically, rapidity can be defined as the hyperbolic angle that differentiates two frames of reference in relative motion, each frame being associated with distance and time coordinates. (Physics) [74%] 2023-11-30 [Special relativity]
7. Structural rigidity: In discrete geometry and mechanics, structural rigidity is a combinatorial theory for predicting the flexibility of ensembles formed by rigid bodies connected by flexible linkages or hinges. Rigidity is the property of a structure that it does not bend or ... (Physics) [70%] 2023-04-25 [Mathematics of rigidity] [Mechanics]...
8. Topological rigidity: In the mathematical field of topology, a manifold M is called topologically rigid if every manifold homotopically equivalent to M is also homeomorphic to M. A central problem in topology is determining when two spaces are the same i.e. [70%] 2023-05-15 [Topology] [Maps of manifolds]...
9. Decorticate rigidity: In neurological physical examination, decorticate rigidity is "characterized by flexion of the elbows and wrists with extension of the legs and feet. The causative lesion for this condition is located above the red nuclei and usually consists of diffuse cerebral ... [70%] 2023-06-22
10. Flexural rigidity: Flexural rigidity is defined as the force couple required to bend a fixed non-rigid structure by one unit of curvature, or as the resistance offered by a structure while undergoing bending. Although the moment \displaystyle{ M(x) }[/math] and ... (Physics) [70%] 2023-01-18 [Solid mechanics]
11. Real rigidity: In macroeconomics, rigidities are real prices and wages that fail to adjust to the level indicated by equilibrium or if something holds one price or wage fixed to a relative value of another. Real rigidities can be distinguished from nominal ... (Economic concept, a fixed price or wage) [70%] 2022-11-25 [New Keynesian economics]
12. Nominal rigidity: In economics, nominal rigidity, also known as price-stickiness or wage-stickiness, is a situation in which a nominal price is resistant to change. Complete nominal rigidity occurs when a price is fixed in nominal terms for a relevant period ... (Inertia of prices in economics) [70%] 2023-06-17 [Monetary economics] [New Keynesian economics]...
13. Local rigidity: Local rigidity theorems in the theory of discrete subgroups of Lie groups are results which show that small deformations of certain such subgroups are always trivial. It is different from Mostow rigidity and weaker (but holds more frequently) than superrigidity. [70%] 2024-01-13 [Discrete groups] [Hyperbolic geometry]...
14. Rigidity matroid: In the mathematics of structural rigidity, a rigidity matroid is a matroid that describes the number of degrees of freedom of an undirected graph with rigid edges of fixed lengths, embedded into Euclidean space. In a rigidity matroid for a ... (Abstraction of bar-and-joint frameworks) [70%] 2022-09-18 [Mathematics of rigidity] [Matroid theory]...
15. Geometric rigidity: In discrete geometry, geometric rigidity is a theory for determining if a geometric constraint system (GCS) has finitely many \displaystyle{ d }[/math]-dimensional solutions, or frameworks, in some metric space. A framework of a GCS is rigid in \displaystyle{ d ... [70%] 2024-01-11 [Geometry]
16. Nominal rigidity: In economics, nominal rigidity, also known as price-stickiness or wage-stickiness, is a situation in which a nominal price is resistant to change. Complete nominal rigidity occurs when a price is fixed in nominal terms for a relevant period ... (Finance) [70%] 2023-10-19 [Monetary economics] [New Keynesian economics]...
17. Flexural rigidity: Flexural rigidity is defined as the force couple required to bend a fixed non-rigid structure by one unit of curvature, or as the resistance offered by a structure while undergoing bending. Although the moment M ( x ) {\displaystyle M(x ... [70%] 2024-04-14 [Solid mechanics]
18. Rigidité magnétique: Cet article est une ébauche concernant la physique. En physique des accélérateurs, la rigidité magnétique est une grandeur utilisée pour quantifier l'effet d'un champ magnétique sur le mouvement d'une particule chargée. [61%] 2025-01-26
19. Mostow rigidity theorem: In mathematics, Mostow's rigidity theorem, or strong rigidity theorem, or Mostow–Prasad rigidity theorem, essentially states that the geometry of a complete, finite-volume hyperbolic manifold of dimension greater than two is determined by the fundamental group and hence ... [57%] 2022-07-06 [Hyperbolic geometry] [Differential geometry]...
20. Mostow rigidity theorem: In mathematics, Mostow's rigidity theorem, or strong rigidity theorem, or Mostow–Prasad rigidity theorem, essentially states that the geometry of a complete, finite-volume hyperbolic manifold of dimension greater than two is determined by the fundamental group and hence ... (Theorem in hyperbolic geometry) [57%] 2024-03-24 [Hyperbolic geometry] [Differential geometry]...