## What does it mean to be piecewise smooth?

## What does it mean to be piecewise smooth?

Intuitively, the notion of a piecewise smooth function is meant to capture the idea of a function whose domain can be partitioned locally into finitely many “pieces” relative on which smoothness holds, and continuity holds across the joins of the pieces. Here smoothness refers to continuous differentiability.

**What does smooth boundary mean?**

A smooth n-manifold with boundary is a second countable Hausdorff space M together with an atlas for M. Finally, here’s the definition for the boundary of M. The boundary of M is the set of all points x in M such that for every chart (equivalently, some chart) (U,f) containing x, f(x) has 0 as an nth coordinate.

### What does it mean for a curve or a surface to be piecewise smooth?

Piecewise-smooth surfaces are constructed out of surfaces with piecewise smooth boundaries joined together. If two surface patches have a common boundary, but different normal directions along the boundary, the resulting surface has a sharp crease.

**How do you determine if a function is piecewise smooth?**

Specifically, if f:[a,b]→C is a complex-valued function on the compact interval [a,b], then f is said to be piecewise smooth if there exists a partition {x0,x1,…

## What does it mean for a function to be smooth?

In mathematical analysis, the smoothness of a function is a property measured by the number of continuous derivatives it has over some domain, called differentiability class. At the very minimum, a function could be considered smooth if it is differentiable everywhere (hence continuous).

**How do you determine if a function is smooth?**

For a function to be smooth, it has to have continuous derivatives up to a certain order, say k. We say that function is Ck smooth. An example of a continuous but not smooth function is the absolute value, which is continuous everywhere but not differentiable everywhere.

### What is the meaning of smooth functioning?

A smooth function is a function that has continuous derivatives up to some desired order over some domain. A function can therefore be said to be smooth over a restricted interval such as or. .

**Does smoothness imply continuity?**

Smooth implies continuous, but not the other way around. There are functions that are continuous everywhere, yet nowhere differentiable.

## How do you know if a function is smooth?

Smooth functions have a unique defined first derivative (slope or gradient) at every point. Graphically, a smooth function of a single variable can be plotted as a single continuous line with no abrupt bends or breaks.

**What defines a smooth function?**

A smooth function is a function that has continuous derivatives up to some desired order over some domain.

### How do you show a function is smooth?

Given function f:R→R be defined by f(x)={e−1x2if x>0;0if x≤0. is smooth function satisfying h(x)=0 for xb and 0

**What is meant by a smooth function?**

## What makes a smooth function?

**What is a smooth solution?**

A smooth solution is one with infinitely many derivatives. A smooth solution is classical, but a classical solution may not be smooth.

### How do you find the smoothness of a function?

the smoothness of a function is a property measured by the number of derivatives it has which are continuous. A smooth function is a function that has derivatives of all orders everywhere in its domain. Now, my question is how we measure and compare the degree of smoothness? for example I have function f(x)=e−αx.

**What does smooth functioning mean?**

## What is smoothness of a graph?

Smooth functions have a unique defined first derivative (slope or gradient) at every point. Graphically, a smooth function of a single variable can be plotted as a single continuous line with no abrupt bends or breaks. All the examples you’ve seen so far in this section have been smooth.

**How to avoid oscillations near singularities in piecewise smooth functions?**

Standard wavelet linear approximations generate oscillations (Gibbs’ phenomenon) near singularities in piecewise smooth functions. Nonlinear and data dependent methods are often considered as the main strategies to avoid those oscillations.

### What is the piecewise constant active contour model?

The piecewise constant active contour model ( Chan and Vese, 2001a; Chan et al., 2000; Cohen, 1997) is a practical variant of the full Mumford–Shah model.

**What is the piecewise constant model (acwe)?**

Instead of using a piecewise smooth function f to approximate the image data, the piecewise constant model or the active contours without edges model (ACWE) assumes that the image grey levels within each region can be approximated by the mean intensity value estimated in the corresponding region. Let be a simple and closed curve.

## Where does the singularity of a vortical boundary arise?

A reasonable expectation is that the vortical singularity arises somewhere along the ramp. As a matter of fact, there must exist a stagnation point along the boundary, since v · v = 0 holds and the pseudo-velocity field is incoming at both ends. This does not rule out the possibility that several stagnation points exist.