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Mathematical formula expressing equality
an equation is a mathematical formula that expresses the equality of two expressions, by connecting them with the equals sign =. The word equation and
Equation
8th episode of the 1st season of Fringe
"The Equation" is the eighth episode of the first season of the American science fiction drama television series Fringe. The episode follows the Fringe
The_Equation
Type of functional equation (mathematics)
mathematics, a differential equation is an equation that relates one or more unknown functions and their derivatives. In applications, the functions generally
Differential_equation
Differential equation for the description of waves or standing wave
The wave equation is a second-order linear partial differential equation for the description of waves or standing wave fields such as mechanical waves
Wave_equation
Description of a quantum-mechanical system
The Schrödinger equation is a partial differential equation that governs the wave function of a non-relativistic quantum-mechanical system. Its discovery
Schrödinger_equation
Mathematical equation describing the motion of a rocket
The classical rocket equation, Tsiolkovsky rocket equation, or ideal rocket equation is a mathematical equation that describes the motion of vehicles that
Tsiolkovsky_rocket_equation
Polynomial equation of degree two
In mathematics, a quadratic equation (from Latin quadratus 'square') is an equation that can be rearranged in standard form as a x 2 + b x + c = 0 , {\displaystyle
Quadratic_equation
Equations describing classical electromagnetism
Maxwell's equations are a set of coupled partial differential equations that describe how electric and magnetic fields are generated by electric charges
Maxwell's_equations
Field-equations in general relativity
In the general theory of relativity, the Einstein field equations (EFE; also known as Einstein's equations) relate the geometry of spacetime to the distribution
Einstein_field_equations
mathematics, and in particular in the theory of solitons, the Dym equation (HD) is the third-order partial differential equation u t = u 3 u x x x . {\displaystyle
Dym_equation
Elliptic partial differential equation
equation is an elliptic partial differential equation of broad utility in theoretical physics. For example, the solution to Poisson's equation is the
Poisson's_equation
Polynomial equation of degree 3
cubic equation in one variable is an equation of the form a x 3 + b x 2 + c x + d = 0 {\displaystyle ax^{3}+bx^{2}+cx+d=0} in which a is not zero. The solutions
Cubic_equation
Partial differential equation describing the evolution of temperature in a region
the heat equation is a parabolic partial differential equation. The theory of the heat equation was first developed by Joseph Fourier in 1822 for the
Heat_equation
Equation that does not involve powers or products of variables
In mathematics, a linear equation is an equation that may be put in the form a 1 x 1 + … + a n x n + b = 0 , {\displaystyle a_{1}x_{1}+\ldots +a_{n}x_{n}+b=0
Linear_equation
Second-order partial differential equation
This is called Poisson's equation, a generalization of Laplace's equation. Laplace's equation and Poisson's equation are the simplest examples of elliptic
Laplace's_equation
Saturation vapour pressure of water calculation
The Tetens equation is an equation to calculate the saturation vapour pressure of water over liquid and ice. It is named after its creator, O. Tetens
Tetens_equation
Estimate of extraterrestrial civilizations
The Drake equation is a probabilistic argument used to estimate the number of active, communicative extraterrestrial civilizations in the Milky Way Galaxy
Drake_equation
Type of differential equation
mathematics, a Riccati equation in the narrowest sense is any first-order ordinary differential equation that is quadratic in the unknown function. In other
Riccati_equation
Equation to derive time of sunset and sunrise
The sunrise equation or sunset equation can be used to derive the time of sunrise or sunset for any solar declination and latitude in terms of local solar
Sunrise_equation
Böttcher's equation, named after Lucjan Böttcher, is the functional equation F ( h ( z ) ) = ( F ( z ) ) n {\displaystyle F(h(z))=(F(z))^{n}} where h
Böttcher's_equation
Eigenvalue problem for the Laplace operator
mathematics, the Helmholtz equation is the eigenvalue problem for the Laplace operator. It corresponds to the elliptic partial differential equation: ∇ 2 f
Helmholtz_equation
Power loss in magnetic materials
Steinmetz's equation, sometimes called the power equation, is an empirical equation used to calculate the total power loss (core losses) per unit volume
Steinmetz's_equation
Equation that describes density changes of a material that is diffusing in a medium
The diffusion equation is a parabolic partial differential equation. In physics, it describes the macroscopic behavior of many micro-particles in Brownian
Diffusion_equation
Fundamental equation relating accounting quantities
The fundamental accounting equation, also called the balance sheet equation, is the foundation for the double-entry bookkeeping system and the cornerstone
Accounting_equation
Empirical adsorption isotherm
The Freundlich equation or Freundlich adsorption isotherm, an adsorption isotherm, is an empirical relationship between the quantity of a gas adsorbed
Freundlich_equation
Polynomial equation of degree 4
mathematics, a quartic equation is one which can be expressed as a quartic function equaling zero. The general form of a quartic equation is a x 4 + b x 3 +
Quartic_equation
Necessary condition for optimality associated with dynamic programming
optimization problems, the analogous equation is a partial differential equation called the Hamilton–Jacobi–Bellman equation. In discrete time any multi-stage
Bellman_equation
Type of Diophantine equation
Pell's equation, also called the Pell–Fermat equation, is any Diophantine equation of the form x 2 − n y 2 = 1 , {\displaystyle x^{2}-ny^{2}=1,} where
Pell's_equation
Empirical model for microorganisms growth limited by a nutrient
The Monod equation is a mathematical model for the growth of microorganisms. It is named for Jacques Monod (1910–1976, a French biochemist, Nobel Prize
Monod_equation
Formula for temperature dependence of rates of chemical reactions
the Arrhenius equation is a formula for the temperature dependence of reaction rates. The equation was proposed by Svante Arrhenius in 1889 on the basis
Arrhenius_equation
Equations of motion for viscous fluids
The Navier–Stokes equations (/nævˈjeɪ ˈstoʊks/ nav-YAY STOHKS) describe the motion of viscous fluids. This system of partial differential equations was
Navier–Stokes_equations
System where changes of output are not proportional to changes of input
words, in a nonlinear system of equations, the equation(s) to be solved cannot be written as a linear combination of the unknown variables or functions
Nonlinear_system
Description of the time-evolution of plasma
In plasma physics, the Vlasov equation is a differential equation describing the time evolution of the distribution function of a collisionless plasma
Vlasov_equation
theory the Zakai equation is a linear stochastic partial differential equation for the un-normalized density of a hidden state. In contrast, the Kushner
Zakai_equation
Partial differential equation
Burgers' equation or Bateman–Burgers equation is a fundamental partial differential equation and convection–diffusion equation occurring in various areas
Burgers'_equation
Tanaka's equation is an example of a stochastic differential equation which admits a weak solution but has no strong solution. It is named after the Japanese
Tanaka_equation
Relativistic wave description of fermions
In physics, the Majorana equation is a relativistic wave equation. It is named after the Italian physicist Ettore Majorana, who proposed it in 1937 as
Majorana_equation
In filtering theory the Kushner equation (after Harold Kushner) is an equation for the conditional probability density of the state of a stochastic non-linear
Kushner_equation
Ruze's equation is an equation relating the gain of an antenna to the root mean square (RMS) of the antenna's random surface errors. The equation was originally
Ruze's_equation
Partial differential equation
theory, the Fokker–Planck equation is a partial differential equation that describes the time evolution of the probability density function of the position
Fokker–Planck_equation
Topics referred to by the same term
up equation in Wiktionary, the free dictionary. An equation in mathematics is a formula stating that two expressions have the same value. Equation may
Equation_(disambiguation)
Type of differential equation
partial differential equation (PDE) is an equation which involves a multivariable function and one or more of its partial derivatives. The function is often
Partial_differential_equation
Equation whose unknown is a function
functional equation is, in the broadest meaning, an equation in which one or several functions appear as unknowns. So, differential equations and integral
Functional_equation
The Inhour equation used in nuclear reactor kinetics to relate reactivity and the reactor period. Inhour is short for "inverse hour" and is defined as
Inhour_equation
Otherwise, Euler's equation may refer to a non-differential equation, as in these three cases: Euler–Lotka equation, a characteristic equation employed in mathematical
List of topics named after Leonhard Euler
List_of_topics_named_after_Leonhard_Euler
Equation in fluid dynamics
In fluid dynamics, the Darcy–Weisbach equation is an empirical equation that relates the head loss, or pressure loss, due to viscous shear forces along
Darcy–Weisbach_equation
Formulation of classical mechanics
throughout the time evolution of the system. This constraint allows the calculation of the equations of motion of the system using Lagrange's equations. Newton's
Lagrangian_mechanics
Stochastic differential equation
In physics, a Langevin equation (named after Paul Langevin) is a stochastic differential equation describing how a system evolves when subjected to a combination
Langevin_equation
Cyber attack group
The Equation Group, also known in China as APT-C-40, is a highly sophisticated threat actor known to be the Tailored Access Operations (TAO) unit of the
Equation_Group
Representation of water movement in unsaturated soils
The Richards equation represents the movement of water in unsaturated soils, and is attributed to Lorenzo A. Richards who published the equation in 1931
Richards_equation
Polynomial equation whose integer solutions are sought
Diophantine equation is a polynomial equation with integer coefficients, for which only integer solutions are of interest. A linear Diophantine equation equates
Diophantine_equation
(1984), "Multi-vortex solutions of a two-dimensional nonlinear wave equation", Prog. Theor. Phys., 72 (1): 33–37, Bibcode:1984PThPh..72...33I, doi:10.1143/PTP
Ishimori_equation
Differential equation containing derivatives with respect to only one variable
In mathematics, an ordinary differential equation (ODE) is a differential equation (DE) dependent on only a single independent variable. As with any other
Ordinary differential equation
Ordinary_differential_equation
Empirical relationship between refractive index and wavelength
The Sellmeier equation is an empirical relationship between refractive index and wavelength for a particular transparent medium. The equation is used
Sellmeier_equation
Kompaneyets equation refers to a non-relativistic, Fokker–Planck type, kinetic equation for photon number density with which photons interact with an
Kompaneyets_equation
2021 book by Michio Kaku
The God Equation: The Quest for a Theory of Everything is a popular science book by the futurist and physicist Michio Kaku. The book was initially published
The_God_Equation
diagnostic equation (or diagnostic model) is an equation (or model) that links the values of these variables simultaneously, either because the equation (or
Diagnostic_equation
Fictional mind control formula in DC Comics
The Anti-Life Equation is a fictional concept appearing in American comic books published by DC Comics. Various comics have defined the equation in different
Anti-Life_Equation
Equation relating the rate of an electrochemical reaction to the overpotential
The Tafel equation is an equation in electrochemical kinetics relating the rate of an electrochemical reaction to the overpotential. The Tafel equation
Tafel_equation
Polynomial equation, generally univariate
In mathematics, an algebraic equation or polynomial equation is an equation of the form P = 0 {\displaystyle P=0} , where P is a polynomial, usually with
Algebraic_equation
Orbital mechanics term
In orbital mechanics, Kepler's equation relates various geometric properties of the orbit of a body subject to a central force. It was derived by Johannes
Kepler's_equation
Formula for the degree of polymerization
In step-growth polymerization, the Carothers equation (or Carothers' equation) gives the degree of polymerization, Xn, for a given fractional monomer
Carothers_equation
The Kawahara equation is a partial differential equation that arises in various fields of mathematical physics, particularly in the study of wave phenomena
Kawahara_equation
Relativistic quantum mechanical wave equation
In particle physics, the Dirac equation is a relativistic wave equation derived by British physicist Paul Dirac in 1928. In its free form, or including
Dirac_equation
Description of how a trait or gene changes in frequency over time
In the theory of evolution and natural selection, the Price equation (also known as Price's equation or Price's theorem) describes how a "characteristic"
Price_equation
Symbolic representation of a chemical reaction
A chemical equation is the symbolic representation (notation) of a chemical reaction in the form of symbols and chemical formulas. The reactant entities
Chemical_equation
Non-linear second order differential equation and its attractor
The Duffing equation (or Duffing oscillator), named after Georg Duffing (1861–1944), is a non-linear second-order differential equation used to model
Duffing_equation
probability, the Belavkin equation, also known as Belavkin-Schrödinger equation, quantum filtering equation, stochastic master equation, is a quantum
Belavkin_equation
The Edwards equation in organic chemistry is a two-parameter equation for correlating nucleophilic reactivity, as defined by relative rate constants,
Edwards_equation
Physical law in electrochemistry
In electrochemistry, the Nernst equation is a chemical thermodynamical relationship that permits the calculation of the reduction potential of a reaction
Nernst_equation
Equation of statistical mechanics
The Boltzmann equation or Boltzmann transport equation (BTE) describes the statistical behaviour of a thermodynamic system not in a state of equilibrium;
Boltzmann_equation
Non-linear partial differential equation encountered in problems of wave propagation
equation (from Greek εἰκών, image) is a non-linear first-order partial differential equation that is encountered in problems of wave propagation. The
Eikonal_equation
Equation from stability analysis
The Lyapunov equation, named after the Russian mathematician Aleksandr Lyapunov, is a matrix equation used in the stability analysis of linear dynamical
Lyapunov_equation
Theorem in probability theory
theory, Wald's equation, Wald's identity or Wald's lemma is an important identity that simplifies the calculation of the expected value of the sum of a random
Wald's_equation
graph theory, Graph equations are equations in which the unknowns are graphs. One of the central questions of graph theory concerns the notion of isomorphism
Graph_equation
Family of solutions to related differential equations
determines the shape of the solution. This number is called the order of the Bessel function and can be any complex number. Although the same equation arises
Bessel_function
Equation describing the transport of some quantity
A continuity equation or transport equation is an equation that describes the transport of some quantity. It is particularly simple and powerful when applied
Continuity_equation
Chemical kinetics equation
The Eyring equation (occasionally also known as Eyring–Polanyi equation) is an equation used in chemical kinetics to describe changes in the rate of a
Eyring_equation
temperature. Another similar equation based on more recent data is the Arden Buck equation. This equation is named after the authors of the original scientific
Goff–Gratch_equation
Chemistry concept
or molarity V2 = final volume .... The basic room purge equation is used in industrial hygiene. It determines the time required to reduce a known vapor
Dilution_(equation)
Functional equation Functional equation (L-function) Constitutive equation Laws of science Defining equation (physical chemistry) List of equations in classical
List_of_equations
Optimality condition in optimal control theory
The Hamilton-Jacobi-Bellman (HJB) equation is a nonlinear partial differential equation that provides necessary and sufficient conditions for optimality
Hamilton–Jacobi–Bellman equation
Hamilton–Jacobi–Bellman_equation
In Combustion, G equation is a scalar G ( x , t ) {\displaystyle G(\mathbf {x} ,t)} field equation which describes the instantaneous flame position, introduced
G_equation
Fourth-order PDE in continuum mechanics
In mathematics, the biharmonic equation is a fourth-order partial differential equation which arises in areas of continuum mechanics, including linear
Biharmonic_equation
Communication theory
The Media Equation is a general communication theory that claims people tend to assign human characteristics to computers and other media, and treat them
The_Media_Equation
Discontinuity in linear measurement
A milepost equation, milepoint equation, or postmile equation is a place where mileposts on a linear feature, such as a highway or rail line, fail to increase
Milepost_equation
Thermodynamic equation
The Antoine equation is a class of semi-empirical correlations describing the relation between vapor pressure and temperature for pure substances. The
Antoine_equation
Heuristic formula to explain determinants of behavior
Lewin's equation, B = f(P, E), is a heuristic formula proposed by psychologist Kurt Lewin as an explanation of what determines behavior. The formula states
Lewin's_equation
Equations governing time evolution of physical systems
In physics, chemistry, and related fields, master equations are used to describe the time evolution of a system that can be modeled as being in a probabilistic
Master_equation
The Wannier equation describes a quantum mechanical eigenvalue problem in solids where an electron in a conduction band and an electronic vacancy (i.e
Wannier_equation
Differential equation that is linear with respect to the unknown function
differential equation is a differential equation that is linear in the unknown function and its derivatives, so it can be written in the form a 0 ( x
Linear_differential_equation
Topics referred to by the same term
Characteristic equation may refer to: Characteristic equation (calculus), used to solve linear differential equations Characteristic equation, the equation obtained
Characteristic_equation
Relativistic wave equation in quantum mechanics
the Klein–Gordon equation is a relativistic wave equation for spinless particles. It was discovered 1926 as the relativistic generalization of the Schrödinger
Klein–Gordon_equation
Method used to estimate an individual's basal metabolic rate
The Harris–Benedict equation (also called the Harris-Benedict principle) is a method used to estimate an individual's basal metabolic rate (BMR). The
Harris–Benedict_equation
In mathematics, k-Hessian equations (or Hessian equations for short) are partial differential equations (PDEs) based on the Hessian matrix. More specifically
Hessian_equation
Relation between friction factor and Reynolds number
The Ergun equation, derived by the Turkish chemical engineer Sabri Ergun in 1952, expresses the friction factor in a packed column as a function of the
Ergun_equation
Topics referred to by the same term
Logistic equation can refer to: Logistic function, a common S-shaped equation and curve with applications in a wide range of fields. Logistic map, a nonlinear
Logistic_equation
Field equation from quantum gravity
The Wheeler–DeWitt equation for theoretical physics and applied mathematics, is a field equation attributed to John Archibald Wheeler and Bryce DeWitt
Wheeler–DeWitt_equation
Description of constant-temperature solid phase changes
The Avrami equation describes how solids transform from one phase to another at constant temperature. It can specifically describe the kinetics of crystallisation
Avrami_equation
Relation between chemical reaction rate and concentrations of the reactants
the rate equation (also known as the rate law or empirical differential rate equation) is an empirical differential mathematical expression for the reaction
Rate_equation
THE EQUATION
THE EQUATION
Girl/Female
Hindu
Gift of God
Boy/Male
Greek American German
God given.
Male
Native American
Native American Navajo name TSE means "rock."
Female
Vietnamese
Vietnamese name THU means "autumn."
Male
English
English surname transferred to forename use, derived from the Middle English word tye, TYE means "pasture."
Surname or Lastname
English (mainly East Anglia)
English (mainly East Anglia) : topographic name for someone who lived by a common pasture, Middle English tye (Old English tēag).North German : from a short form, Tide, of the personal name Dietrich.
Female
English
 Pet form of English Theodora, THEA means "gift of God." Compare with another form of Thea.
Female
German
Pet form of German Kätharina, KÄTHE means "pure."
Boy/Male
English
From the enclosure.
Male
English
Short form of English Theodore, THEO means "gift of God," and other names beginning with Theo-.
Female
Greek
 Short form of Greek and Latin Dorothea, THEA means "gift of God." Compare with another form of Thea.
Female
Vietnamese
Vietnamese name THI means "poem."
Boy/Male
Native American
Rock.
Girl/Female
Greek
Untamed.
Girl/Female
Hindu, Indian, Malayalam, Modern, Tamil
Nil
Surname or Lastname
English
English : status name from Middle English thewe ‘thrall’, ‘slave’ (Old English þēow).
Girl/Female
Greek American
Goddess; godly. Also as abbreviation of names like Althea and Dorothea. The mythological Thea was...
Girl/Female
Finnish, German, Greek
Gift of God
Surname or Lastname
English (Yorkshire)
English (Yorkshire) : variant of Tye.
Boy/Male
Arthurian Legend American Hebrew Spanish
Arthur's brother.
THE EQUATION
THE EQUATION
Girl/Female
Australian, Danish, German, Swedish
Lion's Strength
Boy/Male
Muslim
(Father of Ajlah bin Abdullah)
Boy/Male
Indian, Sanskrit
Deliverer
Male
German
Low German form of Old High German Ricohard, RICKERT means "powerful ruler."
Surname or Lastname
English
English : from the Middle English and Old English personal name Willoc, a pet form from a short form of the various compound names with the first element willa ‘will’, ‘desire’. In the Middle Ages this came to be used as a pet form of the personal name William.
Boy/Male
Hindu
Girl/Female
Muslim
Gift of God
Girl/Female
Indian
Pure and dignified
Girl/Female
Tamil
Kajalsri | காஜாலà¯à®¸à®°à¯€Â
Eye liner
Girl/Female
Arabic, Bengali, Hindu, Indian, Telugu
Dew Drop; Affection; Diamond
THE EQUATION
THE EQUATION
THE EQUATION
THE EQUATION
THE EQUATION
n.
Anything, or any part, corresponding to the toe of the foot; as, the toe of a boot; the toe of a skate.
n.
The fore part of the hoof or foot of an animal.
n.
A chain or rope, one end of which passes through the mast, and is made fast to the center of a yard; the other end is attached to a tackle, by means of which the yard is hoisted or lowered.
n.
The nodule of earth from which the ball is struck in golf.
pron.
Of thee, or belonging to thee; the more common form of thine, possessive case of thou; -- used always attributively, and chiefly in the solemn or grave style, and in poetry. Thine is used in the predicate; as, the knife is thine. See Thine.
v. t.
To touch or reach with the toes; to come fully up to; as, to toe the mark.
v. t.
A line, usually straight, drawn across the stems of notes, or a curved line written over or under the notes, signifying that they are to be slurred, or closely united in the performance, or that two notes of the same pitch are to be sounded as one; a bind; a ligature.
v. t.
See Tie, the proper orthography.
def. art.
The.
definite article.
A word placed before nouns to limit or individualize their meaning.
pron.
The objective case of thou. See Thou.
n.
One of the terminal members, or digits, of the foot of a man or an animal.
obj.
The plural of he, she, or it. They is never used adjectively, but always as a pronoun proper, and sometimes refers to persons without an antecedent expressed.
n.
The parson bird.
n.
The point of intersection of a vertical line through the center of gravity of the fluid displaced by a floating body which is tipped through a small angle from its position of equilibrium, and the inclined line which was vertical through the center of gravity of the body when in equilibrium.
obj.
This or that female; the woman understood or referred to; the animal of the female sex, or object personified as feminine, which was spoken of.
pron.
The objective case of they. See They.
adv.
By that; by how much; by so much; on that account; -- used before comparatives; as, the longer we continue in sin, the more difficult it is to reform.
v. i.
See Thee.