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2. Buckingham π theorem - Wikipedia

   en.wikipedia.org/wiki/Buckingham_π_theorem

   An example of dimensional analysis can be found for the case of the mechanics of a thin, solid and parallel-sided rotating disc. There are five variables involved which reduce to two non-dimensional groups. The relationship between these can be determined by numerical experiment using, for example, the finite element method. [10]

3. Dimensional analysis - Wikipedia

   en.wikipedia.org/wiki/Dimensional_analysis

   A simple application of dimensional analysis to mathematics is in computing the form of the volume of an n-ball (the solid ball in n dimensions), or the area of its surface, the n-sphere: being an n-dimensional figure, the volume scales as x n, while the surface area, being (n − 1)-dimensional, scales as x n−1.

4. Fermi problem - Wikipedia

   en.wikipedia.org/wiki/Fermi_problem

   A Fermi problem (or Fermi quiz, Fermi question, Fermi estimate), also known as an order-of-magnitude problem (or order-of-magnitude estimate, order estimation), is an estimation problem in physics or engineering education, designed to teach dimensional analysis or approximation of extreme scientific calculations.

5. List of physical quantities - Wikipedia

   en.wikipedia.org/wiki/List_of_physical_quantities

   The one-dimensional extent of an object metre (m) L: extensive: Time: t: The duration of an event: second (s) T: scalar, intensive, extensive: Mass: m: A measure of resistance to acceleration: kilogram (kg) M: extensive, scalar: Temperature: T: Average kinetic energy per degree of freedom of a system: kelvin (K) Θ or [K] intensive, scalar ...

6. List of unsolved problems in mathematics - Wikipedia

   en.wikipedia.org/wiki/List_of_unsolved_problems...

   Many mathematical problems have been stated but not yet solved. These problems come from many areas of mathematics, such as theoretical physics, computer science, algebra, analysis, combinatorics, algebraic, differential, discrete and Euclidean geometries, graph theory, group theory, model theory, number theory, set theory, Ramsey theory, dynamical systems, and partial differential equations.

7. Sanity check - Wikipedia

   en.wikipedia.org/wiki/Sanity_check

   Dimensional analysis may be used as a sanity check of physical equations: the two sides of any equation must be commensurable or have the same dimensions. A person who has calculated the power output of a car to be 700 kJ may have omitted a factor, since the unit joules is a measure of energy, not power (energy per unit time).

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9. High-dimensional statistics - Wikipedia

   en.wikipedia.org/wiki/High-dimensional_statistics

   Illustration of the linear model in high-dimensions: a data set consists of a response vector and a design matrix with .Our goal is to estimate the unknown vector = (, …,) of regression coefficients where is often assumed to be sparse, in the sense that the cardinality of the set := {:} is small by comparison with .