Help interpreting HW question on Lipschitz Hölder

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In summary, the conversation discusses the question of whether every Lipschitz continuous function is α-Hölder continuous for every α ∈ (0, 1]. The definitions of both concepts are provided and it is noted that Lipschitz is a special case of α-Hölder when α=1. However, the question specifically asks for α values less than 1, which the other person did not initially realize. After clarification, it is determined that Lipschitz does not necessarily imply Hölder of order less than 1.
  • #1
bars
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Homework Statement


I only need help interpreting the following:
Show that every Lipschitz continuous function is α-Hölder continuous for
every α ∈ (0, 1
The definition of both is given in the homework so this seems trivial but it's a graduate level class. Am I mising something? Thanks for any help!

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The Attempt at a Solution


 
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  • #2
Well, what are those definitions? Why do you say this is "trivial"?
 
  • #3
Well by the definitions, Lipschitz is a special case of α-Hölder when α=1. Since α is contained in the interval (0,1] (which is the interval given for α-Hölder) then by def. every Lipschitz continuous function is α-Hölder continuous.
 
  • #4
bars said:
Well by the definitions, Lipschitz is a special case of α-Hölder when α=1. Since α is contained in the interval (0,1] (which is the interval given for α-Hölder) then by def. every Lipschitz continuous function is α-Hölder continuous.

Your question asked to show that it is α-Hölder continuous for every α ∈ (0, 1], not just for α=1. Unless this was a typo? Yes, Lipschitz implies Hölder of order 1. But does it imply this for all orders less than 1?
 
  • #5
Ahhh, great! yes your right I see it now. Funny how sometimes one can not see what is right in front of them. Thanks for the help, that's exactly what I needed.
 

Related to Help interpreting HW question on Lipschitz Hölder

1. What is Lipschitz continuity and how is it related to Hölder continuity?

Lipschitz continuity refers to the property of a function having a bounded rate of change between two points. This means that the distance between the function values at any two points is never greater than a constant multiple of the distance between the points. On the other hand, Hölder continuity refers to the property of a function having a bounded rate of change with respect to a power of the distance between two points. In other words, Lipschitz continuity is a special case of Hölder continuity where the power is equal to 1.

2. What does it mean for a function to be Lipschitz Hölder continuous?

A function is said to be Lipschitz Hölder continuous if it satisfies both Lipschitz and Hölder continuity conditions. This means that the function has a bounded rate of change and a bounded rate of change with respect to a power of the distance between two points.

3. How is the Lipschitz constant calculated for a function?

The Lipschitz constant is calculated by finding the maximum value of the absolute value of the derivative of the function. In other words, it is the maximum rate of change of the function.

4. What is the significance of Lipschitz Hölder continuity in mathematics and science?

Lipschitz Hölder continuity is a useful tool in various areas of mathematics and science. It is often used to prove the existence and uniqueness of solutions to differential equations and to analyze the convergence of numerical methods. Additionally, it plays a key role in the study of fractals and self-similar structures.

5. Are there any practical applications of Lipschitz Hölder continuity in real-world problems?

Yes, Lipschitz Hölder continuity has numerous practical applications in real-world problems. For example, it is used in image and signal processing to smooth out noisy data and to make predictions in time series analysis. It is also used in economics and finance to model and analyze various market phenomena.

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