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The function in example 1, a removable discontinuity. Consider the piecewise function = {< = >. The point = is a removable discontinuity.For this kind of discontinuity: The one-sided limit from the negative direction: = and the one-sided limit from the positive direction: + = + at both exist, are finite, and are equal to = = +.
The above argument holds true for any number/type of discontinuities in the equations for curvature, provided that in each case the equation retains the term for the subsequent region in the form , , etc. It should be remembered that for any x, giving the quantities within the brackets, as in the above case, -ve should be neglected, and the ...
A graph of a parabola with a removable singularity at x = 2. In complex analysis, a removable singularity of a holomorphic function is a point at which the function is undefined, but it is possible to redefine the function at that point in such a way that the resulting function is regular in a neighbourhood of that point.
In magnetohydrodynamics (MHD), shocks and discontinuities are transition layers where properties of a plasma change from one equilibrium state to another. The relation between the plasma properties on both sides of a shock or a discontinuity can be obtained from the conservative form of the MHD equations, assuming conservation of mass, momentum, energy and of .
The above example simply states that the function takes the value () for all x values larger than a. With this, all the forces acting on a beam can be added, with their respective points of action being the value of a. A particular case is the unit step function,
Conversely, by a differentiation theorem of Lebesgue, the jump function f is uniquely determined by the properties: [14] (1) being non-decreasing and non-positive; (2) having given jump data at its points of discontinuity x n; (3) satisfying the boundary condition f (a) = 0; and (4) having zero derivative almost everywhere.
Singularity functions are a class of discontinuous functions that contain singularities, i.e., they are discontinuous at their singular points.Singularity functions have been heavily studied in the field of mathematics under the alternative names of generalized functions and distribution theory.
The typical functional in the calculus of variations is an integral of the form J ( u ) = ∫ Ω F ( x , u ( x ) , ∇ u ( x ) ) d x {\displaystyle J(u)=\int _{\Omega }F(x,u(x),\nabla u(x))dx} where Ω {\displaystyle \Omega } is a subset of R n {\displaystyle \mathbb {R} ^{n}} and F {\displaystyle F} is a real-valued function on Ω × R m × R ...