Properties of a distribution function at infinite

In summary, a distribution function at infinite describes the probability distribution of a random variable with an infinite range. Its properties include being non-decreasing, approaching 0 as the variable approaches negative infinity, and approaching 1 as it approaches positive infinity. It is also continuous, has an area under the curve of 1, and can be used to accurately model and analyze real-world phenomena such as the distribution of wealth and waiting times. While most phenomena can be approximated by a finite distribution, an infinite distribution is necessary for certain situations.
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Homework Statement


Let's consider a distribution function [itex]f=f(t,x^i,E,p^i)[/itex]. Is it true that
[itex]\mathop {\lim }\limits_{p \to\infty}p^{\alpha}f=0 [/itex] [itex]\forall\alpha\in R [/itex]?

Homework Equations

The Attempt at a Solution


I think so, not sure though. Thanks in advance!
 
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What is a distribution function at infinite?

A distribution function at infinite, also known as an infinite distribution function, is a mathematical concept that describes the probability distribution of a random variable that has infinite support. This means that the random variable can take on values from negative infinity to positive infinity.

What are the properties of a distribution function at infinite?

The properties of a distribution function at infinite include:

  • The function must be non-decreasing - this means that as the value of the random variable increases, the probability of it being less than or equal to that value also increases.
  • The function must approach 0 as the value of the random variable approaches negative infinity.
  • The function must approach 1 as the value of the random variable approaches positive infinity.
  • The function is continuous everywhere except at a finite number of points where it can have jump discontinuities.
  • The area under the curve of the function must equal 1.

How is an infinite distribution function different from a finite distribution function?

The main difference between an infinite distribution function and a finite distribution function is that an infinite distribution function has an infinite range, while a finite distribution function has a finite range. This means that the values of a random variable described by an infinite distribution function can range from negative infinity to positive infinity, while the values of a random variable described by a finite distribution function are limited to a specific range.

What is the importance of understanding the properties of a distribution function at infinite?

Understanding the properties of a distribution function at infinite is important in many fields, including statistics, economics, and engineering. It allows us to accurately model and analyze processes that involve infinite random variables, such as the distribution of wealth in a population or the time it takes for a computer program to run. Additionally, knowing the properties of a distribution function at infinite can help us make better predictions and decisions based on data that follows an infinite distribution.

Can an infinite distribution function be used to describe real-world phenomena?

Yes, an infinite distribution function can be used to describe real-world phenomena. While most real-world phenomena can be approximated by a finite distribution function, there are some situations where an infinite distribution is a more accurate representation. For example, the distribution of income in a population is often described by an infinite Pareto distribution, and the distribution of waiting times in a queue can be modeled by an infinite exponential distribution.

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