# Vanish

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**Casimir effect**— Casimir forces on parallel plates Casimir forces on parallel pl …162

**Ludwig Mies van der Rohe**— Born Ludwig Mies March 27, 1886(1886 03 27) Aachen, Kingdom of Prussia, German Empire …163

**Michael Atiyah**— Sir Michael Atiyah Born 22 April 1929 (1929 04 22) (age 82) …164

**Virial theorem**— In mechanics, the virial theorem provides a general equation relating the average over time of the total kinetic energy, , of a stable system consisting of N particles, bound by potential forces, with that of the total potential energy, , where… …165

**Dirac equation**— Quantum field theory (Feynman diagram) …166

**Locally compact space**— In topology and related branches of mathematics, a topological space is called locally compact if, roughly speaking, each small portion of the space looks like a small portion of a compact space.Formal definitionLet X be a topological space. The… …167

**Direct sum of modules**— For the broader use of the term in mathematics, see Direct sum. In abstract algebra, the direct sum is a construction which combines several modules into a new, larger module. The result of the direct summation of modules is the smallest general… …168

**Stress-energy tensor**— The stress energy tensor (sometimes stress energy momentum tensor) is a tensor quantity in physics that describes the density and flux of energy and momentum in spacetime, generalizing the stress tensor of Newtonian physics. It is an attribute of …169

**Analytic continuation**— In complex analysis, a branch of mathematics, analytic continuation is a technique to extend the domain of a given analytic function. Analytic continuation often succeeds in defining further values of a function, for example in a new region where …170

**Emma Watson**— This article is about the actress. For other people named Emma Watson, see Emma Watson (disambiguation). Emma Watson …171

**Generating function**— This article is about generating functions in mathematics. For generating functions in classical mechanics, see Generating function (physics). For signalling molecule, see Epidermal growth factor. In mathematics, a generating function is a formal …172

**Quantum decoherence**— Quantum mechanics Uncertainty principle …173

**Calabi–Yau manifold**— In mathematics, Calabi ndash;Yau manifolds are compact Kähler manifolds whose canonical bundle is trivial. They were named Calabi ndash;Yau spaces by physicists in 1985, [cite journal | author = Candelas, Horowitz, Strominger and Witten | year =… …174

**Cotangent bundle**— In mathematics, especially differential geometry, the cotangent bundle of a smooth manifold is the vector bundle of all the cotangent spaces at every point in the manifold. It may be described also as the dual bundle to the tangent bundle.… …175

**Algebraic variety**— This article is about algebraic varieties. For the term a variety of algebras , and an explanation of the difference between a variety of algebras and an algebraic variety, see variety (universal algebra). The twisted cubic is a projective… …176

**Nilpotent**— This article is about a type of element in a ring. For the type of group, see Nilpotent group. In mathematics, an element x of a ring R is called nilpotent if there exists some positive integer n such that xn = 0. The term was… …177

**Fock state**— A Fock state (also known as a number state), in quantum mechanics, is any element of a Fock space with a well defined number of particles (or quanta). These states are named after the Soviet physicist, V. A. Fock. Contents 1 Definition 2 Energy… …178

**Michael Sheen**— OBE Sheen at the 2010 San Diego Comic Con Born Michael Christopher Sheen 5 February 1969 …179

**Gauge theory**— For a generally accessible and less technical introduction to the topic, see Introduction to gauge theory. In physics, a gauge theory is a type of field theory in which the Lagrangian is invariant under a continuous group of local transformations …180

**Cups and balls**— Hieronymus Bosch: The Conjurer, 1475 1480. Notice the man on the far left is stealing the other man s purse while he is distracted by the game The cups and balls is a classic performance of magic with innumerable adaptations. The effect known as… …