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Differential equations
Scope
Fields
Natural sciences
Engineering
Astronomy
Physics
Chemistry
Biology
Geology
Applied mathematics
Continuum mechanics
Chaos theory
Dynamical systems
Social sciences
Economics
Population dynamics
List of named differential equations
Classification
Types
Ordinary
Partial
Differential-algebraic
Integro-differential
Fractional
Linear
Non-linear
By variable type
Dependent and independent variables
Autonomous
Coupled / Decoupled
Exact
Homogeneous / Nonhomogeneous
Features
Order
Operator
Notation
Relation to processes
Difference (discrete analogue)
Stochastic
Stochastic partial
Delay
Solution
Existence and uniqueness
Picard–Lindelöf theorem
Peano existence theorem
Carathéodory's existence theorem
Cauchy–Kowalevski theorem
General topics
Initial conditions
Boundary values
Dirichlet
Neumann
Robin
Cauchy problem
Wronskian
Phase portrait
Lyapunov / Asymptotic / Exponential stability
Rate of convergence
Series / Integral solutions
Numerical integration
Dirac delta function
Solution methods
Inspection
Method of characteristics
Euler
Exponential response formula
Finite difference (Crank–Nicolson)
Finite element
Infinite element
Finite volume
Galerkin
Petrov–Galerkin
Green's function
Integrating factor
Integral transforms
Perturbation theory
Runge–Kutta
Separation of variables
Undetermined coefficients
Variation of parameters
People
List
Isaac Newton
Gottfried Leibniz
Jacob Bernoulli
Leonhard Euler
Joseph-Louis Lagrange
Józef Maria Hoene-Wroński
Joseph Fourier
Augustin-Louis Cauchy
George Green
Carl David Tolmé Runge
Martin Kutta
Rudolf Lipschitz
Ernst Lindelöf
Émile Picard
Phyllis Nicolson
John Crank
v
t
e
An inexact differential equation is a differential equation of the form (see also: inexact differential)
The solution to such equations came with the invention of the integrating factor by Leonhard Euler in 1739.[1]
^"History of differential equations – Hmolpedia". www.eoht.info. Retrieved 2016-10-16.
and 26 Related for: Inexact differential equation information
An inexactdifferential or imperfect differential is a differential whose integral is path dependent. It is most often used in thermodynamics to express...
In mathematics, an ordinary differentialequation (ODE) is a differentialequation (DE) dependent on only a single independent variable. As with other...
calculus, a differential or differential form is said to be exact or perfect (exact differential), as contrasted with an inexactdifferential, if it is...
example of the inexactness of the dates, according to the U.S. Naval Observatory's Multiyear Interactive Computer Almanac the equation of time was zero...
multiplying through by an integrating factor allows an inexactdifferential to be made into an exact differential (which can then be integrated to give a scalar...
German mathematician Carl Gottfried Neumann and is used to denote an inexactdifferential and to indicate that Q and W are path-dependent (i.e., they are not...
and engineering. Examples of numerical analysis include: ordinary differentialequations as found in celestial mechanics (predicting the motions of planets...
exact differential. In other words, the integral of dΦ will be equal to Φ(t1) − Φ(t0). The symbol δ will be reserved for an inexactdifferential, which...
which is written dY. The quantity dY is an exact differential, while δX is not, it is an inexactdifferential. Infinitesimal changes in a process function...
=\mathbf {b} } , though one might require significantly more digits in inexact arithmetic such as floating point. Similarly, the QR decomposition expresses...
values and the classical concept of force, a connection that is necessarily inexact, as quantum physics is fundamentally different from classical. In quantum...
{\displaystyle \delta Q\ } is said to be an 'imperfect differential' or an 'inexactdifferential'. Some books indicate this by writing q {\displaystyle...
{\displaystyle \mathrm {d} U} increment of internal energy (see Inexactdifferential). Work and heat refer to kinds of process which add or subtract energy...
f(x_{N+2})} are also known. That means that the above equations are just N+2 linear equations in the N+2 variables P 0 {\displaystyle P_{0}} , P 1 {\displaystyle...
Large sparse systems often arise when numerically solving partial differentialequations or optimization problems. The conjugate gradient method can also...
problems such as root-finding, integration, the solution of ordinary differentialequations; the approximation of special functions. Symbolic computation –...
of polynomials. It can be used in convex optimization Several exact or inexact Monte-Carlo-based algorithms exist: In this method, random simulations...
inexactdifferential depends upon the particular path taken through the space of thermodynamic parameters while the integral of an exact differential...
many new mathematical constructions and theories treating imprecision, inexactness, ambiguity, and uncertainty have been developed. Some of these constructions...
open to scientific investigation, even if the science is in some ways inexact. Mill proposed a "mental chemistry" in which elementary thoughts could...
mathematician, working in mathematical analysis, linear elasticity, partial differentialequations and several complex variables. He was born in Acireale, and died...
the flow fields as first introduced in, satisfying the ordinary differentialequation: with v ≐ ( v 1 , v 2 , v 3 ) {\displaystyle v\doteq (v_{1},v_{2}...
was simply an experimental observation. In 2003, Hein Hundal provided an inexact derivation of the formula and showed that the Pythagorean exponent was...