## What is the ML inequality?

|∫baf(x)dx|≤∫ba|f(x)|dx≤∫baMdx=M∫badx=M(b−a). Here, b−a is the arc length of [a,b] and M is an upper bound for |f|. The ML inequality is just a generalization of this to complex integrals.

## How do you do contour integration?

Contour integration methods include: direct integration of a complex-valued function along a curve in the complex plane (a contour);…Direct methods

- parametrizing the contour.
- substitution of the parametrization into the integrand.
- direct evaluation.

**What is Cauchy Goursat Theorem?**

Essentially, it says that if two different paths connect the same two points, and a function is holomorphic everywhere in between the two paths, then the two path integrals of the function will be the same.

**What do contour integrals mean?**

Contour integration is the process of calculating the values of a contour integral around a given contour in the complex plane. As a result of a truly amazing property of holomorphic functions, such integrals can be computed easily simply by summing the values of the complex residues inside the contour.

### What is the integral with a circle in it mean?

@R.M. It is indeed just a normal integral. The circle is there to remind us that the domain of integration, whether it be 1D or 2D or whatever, is closed, in just the same way we could put multiple integral signs to remind us how many dimensions we’re in. endgroup.

### What is Cauchy theorem used for?

It expresses the fact that a holomorphic function defined on a disk is completely determined by its values on the boundary of the disk, and it provides integral formulas for all derivatives of a holomorphic function.

**Why is Cauchy theorem important?**

In mathematics, the Cauchy integral theorem (also known as the Cauchy–Goursat theorem) in complex analysis, named after Augustin-Louis Cauchy (and Édouard Goursat), is an important statement about line integrals for holomorphic functions in the complex plane.

**What is a contour math?**

A curve in two dimensions on which the value of a function. is a constant. Other synonymous terms are equipotential curve, isarithm, and isopleth. A plot of several contour lines is called a contour plot.

#### What is a closed contour?

A contour line that forms a closed loop and does not intersect the edge of the map area on which it is drawn; e.g., a depression contour indicating a closed depression, or a normal contour indicating a hilltop. Ref: AGI. Prev: closed circuitNext: closed fault Glossary Search.

#### What are closed integrals?

A path C is called closed if its initial and final points are the same point. For example, a circle is a closed path. A path C is simple if it doesn’t cross itself. A circle is a simple curve while a figure 8 type curve is not simple.

**What is Cauchy dispersion formula?**

The Cauchy’s dispersion formula represents the dispersion of most of the substances with considerable accuracy. Also from the Cauchy’s dispersion formula if n is refractive index and A,B and C are constants, then n=A+Bλ−2+Cλ−4.