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stabilized output characteristic | Physics | 1 | A forced characteristic with an output quantity which is stabilized with respect to changes of influence quantities. |
stabilized voltage characteristic | Physics | 1 | A characteristic with a stabilized output voltage. |
stabilization | Physics | 1 | In the field of power electronics the reduction of the effect of changes of influence quantities on the output quantity. |
stabilized power supply | Physics | 1 | In the field of power electronics an equipment which takes electrical energy from a source and supplies it stabilized by means inside the equipment to one or more pairs of output terminals. |
stage | Physics | 1 | A part of a series connection of two or more converter connections consisting of one or more parallel connected converter connections. |
steady-state condition | Physics | 1 | Thermal equilibrium attained by the capacitor at constant output and at constant cooling-air temperature. |
symmetrical phase control | Physics | 1 | Phase control with equal delay angles in all principal arms of a fully controllable converter connection or commutating group. |
switched valve device | Physics | 1 | A controllable valve device which may be turned on and off by a control signal. |
tangent of the loss angle (tanδ) of a capacitor | Physics | 1 | The ratio between the equivalent series resistance and the capacitive reactance of a capacitor at specified sinusoidal alternating voltage and frequency. |
threshold voltage | Physics | 1 | The value of the voltage obtained at the intersection of the voltage axis and the straight line approximation of the on-state characteristic of an electronic valve device. |
transfer factor | Physics | 1 | The ratio of the voltage on the load side and the voltage on the source side. |
transition current | Physics | 1 | The mean direct current of a converter connection when the direct current(s) of the commutation group(s) become(s) intermittent when decreasing the current. |
trigger advance angle | Physics | 1 | The time expressed in angular measure by which the trigger pulse is advanced with respect to the reference instant. |
trigger delay angle | Physics | 1 | The time expressed in angular measure by which the trigger pulse is delayed with respect to the reference instant in the case of phase control. |
triggering | Physics | 1 | The control action to achieve firing of a latching valve device or an arm consisting of such devices. |
tolerance band | Physics | 1 | With stabilized power supplies the range of steady-state values of a stabilized output quantity lying between specified limits of deviation from a preset value, e.g. a nominal value. |
total direct voltage regulation | Physics | 1 | The direct voltage regulation including the effect of the AC system impedance. |
total harmonic distortion thd | Physics | 1 | The ratio of the rms value of the harmonic content of an alternating quantity to the rms value of the fundamental component of the quantity. |
turn-off arm | Physics | 1 | An auxiliary arm which temporarily takes over the current directly from a conducting valve arm, consisting of one or more latching valve devices which cannot be turned off by a control signal. |
two-quadrant converter | Physics | 1 | An AC/DC or DC converter with two possible directions of DC power flow associated with one direction of direct current and two directions of direct voltage or vice versa. |
uniform connection | Physics | 1 | A connection with either all principal arms controllable or all principal arms non-controllable. |
valve device assembly | Physics | 1 | An electrically and mechanically combined assembly of electronic valve devices or stacks, complete with all its connections and auxiliaries in its own mechanical structure. |
valve device blocking | Physics | 1 | An operation to prevent further turn-on of a controllable valve device or an arm consisting of such devices by inhibiting the control signals. |
valve device commutation | Physics | 1 | A method of self-commutation in which the commutating voltage is created by turning off the conducting electronic valve device by a control signal. |
valve device quenching | Physics | 1 | A method of quenching in which the quenching is performed by the electronic valve device itself. |
valve device stack | Physics | 1 | A single structure of one or more electronic valve devices with its (their) associated mounting(s) and auxiliaries if any. |
voltage stiff ac/dc converter | Physics | 1 | An electronic AC/DC converter having an essentially smooth voltage on the DC side provided e.g. by a low impedance path for the harmonic currents. |
voltage source inverter | Physics | 1 | A voltage stiff inverter. |
voltage fed inverter | Physics | 1 | A voltage stiff inverter. |
absolute differential calculus | Physics | 1 | An older name of Ricci calculus |
absolute geometry | Physics | 1 | Also called neutral geometry, a synthetic geometry similar to Euclidean geometry but without the parallel postulate. |
abstract algebra | Physics | 1 | The part of algebra devoted to the study of algebraic structures in themselves. Occasionally named modern algebra in course titles. |
abstract analytic number theory | Physics | 1 | The study of arithmetic semigroups as a means to extend notions from classical analytic number theory. |
abstract differential geometry | Physics | 1 | A form of differential geometry without the notion of smoothness from calculus. Instead it is built using sheaf theory and sheaf cohomology. |
abstract harmonic analysis | Physics | 1 | A modern branch of harmonic analysis that extends upon the generalized Fourier transforms that can be defined on locally compact groups. |
abstract homotopy theory | Physics | 1 | A part of topology that deals with homotopic functions, i.e. functions from one topological space to another which are homotopic (the functions can be deformed into one another). |
actuarial science | Physics | 1 | The discipline that applies mathematical and statistical methods to assess risk in insurance, finance and other industries and professions. More generally, actuaries apply rigorous mathematics to model matters of uncertainty. |
additive combinatorics | Physics | 1 | The part of arithmetic combinatorics devoted to the operations of addition and subtraction. |
additive number theory | Physics | 1 | A part of number theory that studies subsets of integers and their behaviour under addition. |
affine geometry | Physics | 1 | A branch of geometry that deals with properties that are independent from distances and angles, such as alignment and parallelism. |
affine geometry of curves | Physics | 1 | The study of curve properties that are invariant under affine transformations. |
affine differential geometry | Physics | 1 | A type of differential geometry dedicated to differential invariants under volume-preserving affine transformations. |
ahlfors theory | Physics | 1 | A part of complex analysis being the geometric counterpart of Nevanlinna theory. It was invented by Lars Ahlfors. |
algebra | Physics | 1 | One of the major areas of mathematics. Roughly speaking, it is the art of manipulating and computing with operations acting on symbols called variables that represent indeterminate numbers or other mathematical objects, such as vectors, matrices, or elements of algebraic structures. |
algebraic analysis | Physics | 1 | motivated by systems of linear partial differential equations, it is a branch of algebraic geometry and algebraic topology that uses methods from sheaf theory and complex analysis, to study the properties and generalizations of functions. It was started by Mikio Sato. |
algebraic combinatorics | Physics | 1 | an area that employs methods of abstract algebra to problems of combinatorics. It also refers to the application of methods from combinatorics to problems in abstract algebra. |
algebraic computation | Physics | 1 | An older name of computer algebra. |
algebraic geometry | Physics | 1 | a branch that combines techniques from abstract algebra with the language and problems of geometry. Fundamentally, it studies algebraic varieties. |
algebraic graph theory | Physics | 1 | a branch of graph theory in which methods are taken from algebra and employed to problems about graphs. The methods are commonly taken from group theory and linear algebra. |
algebraic k-theory | Physics | 1 | an important part of homological algebra concerned with defining and applying a certain sequence of functors from rings to abelian groups. |
algebraic number theory | Physics | 1 | The part of number theory devoted to the use of algebraic methods, mainly those of commutative algebra, for the study of number fields and their rings of integers. |
algebraic statistics | Physics | 1 | the use of algebra to advance statistics, although the term is sometimes restricted to label the use of algebraic geometry and commutative algebra in statistics. |
algebraic topology | Physics | 1 | a branch that uses tools from abstract algebra for topology to study topological spaces. |
algorithmic number theory | Physics | 1 | also known as computational number theory, it is the study of algorithms for performing number theoretic computations. |
anabelian geometry | Physics | 1 | an area of study based on the theory proposed by Alexander Grothendieck in the 1980s that describes the way a geometric object of an algebraic variety (such as an algebraic fundamental group) can be mapped into another object, without it being an abelian group. |
analysis | Physics | 1 | A wide area of mathematics centered on the study of continuous functions and including such topics as differentiation, integration, limits, and series. |
analytic combinatorics | Physics | 1 | part of enumerative combinatorics where methods of complex analysis are applied to generating functions. |
analytic geometry | Physics | 1 | 1. Also known as Cartesian geometry, the study of Euclidean geometry using Cartesian coordinates. |
analytic number theory | Physics | 1 | An area of number theory that applies methods from mathematical analysis to solve problems about integers. |
analytic theory of l-functions | Physics | 1 | a combination of various parts of mathematics that concern a variety of mathematical methods that can be applied to practical and theoretical problems. Typically the methods used are for science, engineering, finance, economics and logistics. |
applied mathematics | Physics | 1 | a combination of various parts of mathematics that concern a variety of mathematical methods that can be applied to practical and theoretical problems. Typically the methods used are for science, engineering, finance, economics and logistics. |
approximation theory | Physics | 1 | part of analysis that studies how well functions can be approximated by simpler ones (such as polynomials or trigonometric polynomials) |
arakelov geometry | Physics | 1 | also known as Arakelov theory |
arakelov theory | Physics | 1 | an approach to Diophantine geometry used to study Diophantine equations in higher dimensions (using techniques from algebraic geometry). It is named after Suren Arakelov. |
arithmetic | Physics | 1 | 1. Also known as elementary arithmetic, the methods and rules for computing with addition, subtraction, multiplication and division of numbers. |
arithmetic algebraic geometry | Physics | 1 | See arithmetic geometry. |
arithmetic combinatorics | Physics | 1 | the study of the estimates from combinatorics that are associated with arithmetic operations such as addition, subtraction, multiplication and division. |
arithmetic dynamics | Physics | 1 | Arithmetic dynamics is the study of the number-theoretic properties of integer, rational, p-adic, and/or algebraic points under repeated application of a polynomial or rational function. A fundamental goal is to describe arithmetic properties in terms of underlying geometric structures. |
arithmetic geometry | Physics | 1 | The use of algebraic geometry and more specially scheme theory for solving problems of number theory. |
arithmetic topology | Physics | 1 | a combination of algebraic number theory and topology studying analogies between prime ideals and knots |
arithmetical algebraic geometry | Physics | 1 | Another name for arithmetic algebraic geometry |
asymptotic combinatorics | Physics | 1 | It uses the internal structure of the objects to derive formulas for their generating functions and then complex analysis techniques to get asymptotics. |
asymptotic theory | Physics | 1 | the study of asymptotic expansions |
auslander–reiten theory | Physics | 1 | the study of the representation theory of Artinian rings |
axiomatic geometry | Physics | 1 | also known as synthetic geometry: it is a branch of geometry that uses axioms and logical arguments to draw conclusions as opposed to analytic and algebraic methods. |
axiomatic set theory | Physics | 1 | the study of systems of axioms in a context relevant to set theory and mathematical logic. |
bifurcation theory | Physics | 1 | the study of changes in the qualitative or topological structure of a given family. It is a part of dynamical systems theory |
biostatistics | Physics | 1 | the development and application of statistical methods to a wide range of topics in biology. |
birational geometry | Physics | 1 | a part of algebraic geometry that deals with the geometry (of an algebraic variety) that is dependent only on its function field. |
bolyai–lobachevskian geometry | Physics | 1 | see hyperbolic geometry |
c*-algebra theory | Physics | 1 | a complex algebra A of continuous linear operators on a complex Hilbert space with two additional properties-(i) A is a topologically closed set in the norm topology of operators.(ii)A is closed under the operation of taking adjoints of operators. |
cartesian geometry | Physics | 1 | see analytic geometry |
calculus | Physics | 1 | An area of mathematics connected by the fundamental theorem of calculus. |
calculus of infinitesimals | Physics | 1 | A foundation of calculus, first developed in the 17th century, that makes use of infinitesimal numbers. |
calculus of moving surfaces | Physics | 1 | an extension of the theory of tensor calculus to include deforming manifolds. |
calculus of variations | Physics | 1 | the field dedicated to maximizing or minimizing functionals. It used to be called functional calculus. |
catastrophe theory | Physics | 1 | a branch of bifurcation theory from dynamical systems theory, and also a special case of the more general singularity theory from geometry. It analyses the germs of the catastrophe geometries. |
categorical logic | Physics | 1 | a branch of category theory adjacent to the mathematical logic. It is based on type theory for intuitionistic logics. |
category theory | Physics | 1 | the study of the properties of particular mathematical concepts by formalising them as collections of objects and arrows. |
chaos theory | Physics | 1 | the study of the behaviour of dynamical systems that are highly sensitive to their initial conditions. |
character theory | Physics | 1 | a branch of group theory that studies the characters of group representations or modular representations. |
class field theory | Physics | 1 | a branch of algebraic number theory that studies abelian extensions of number fields. |
classical differential geometry | Physics | 1 | also known as Euclidean differential geometry. see Euclidean differential geometry. |
classical algebraic topology | Physics | 1 | see algebraic topology |
classical analysis | Physics | 1 | usually refers to the more traditional topics of analysis such as real analysis and complex analysis. It includes any work that does not use techniques from functional analysis and is sometimes called hard analysis. However it may also refer to mathematical analysis done according to the principles of classical mathematics. |
classical analytic number theory | Physics | 1 | see Euclidean geometry |
classical differential calculus | Physics | 1 | see Euclidean geometry |
classical diophantine geometry | Physics | 1 | see Euclidean geometry |
classical euclidean geometry | Physics | 1 | see Euclidean geometry |
classical geometry | Physics | 1 | may refer to solid geometry or classical Euclidean geometry. See geometry |
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