Dirac delta function proof fourier space

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Homework Help Overview

The discussion revolves around the Dirac delta function, specifically its representation in the frequency domain (Fourier Space). The original poster expresses confusion regarding the transformation of the Dirac delta function from time variables to frequency variables.

Discussion Character

  • Exploratory, Assumption checking, Problem interpretation

Approaches and Questions Raised

  • Participants question the clarity of the original problem statement and the implications of transforming the Dirac delta function. There are discussions about the need for more context and specific assumptions related to the problem.

Discussion Status

The conversation is ongoing, with participants seeking clarification and additional context. Some have noted the need for precise wording and assumptions to better understand the problem. One participant suggests they may have found a resolution, but this has not been confirmed by others.

Contextual Notes

There is mention of a 2D Fourier transform and the necessity of correctly interpreting the transformation of the Dirac delta function in relation to time and frequency variables. Participants emphasize the importance of specifying the problem accurately for effective assistance.

jhartc90
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Homework Statement


I am having trouble understanding this:

I have a Dirac Delta function

$$ \delta (t_1-t_2) $$

but I want to prove that in the frequency domain (Fourier Space), it is:

$$\delta(\omega_1+\omega_2) $$

Would anyone have any ideas how to go about solving this problem?

I know that t1 and t2 are two independent times, and that w1 and w2 are two independent frequencies. But I do not fully understand what this question wants/is asking?

Homework Equations


[/B]
The only relevant equations I could think of may just be transforms found in a table.

The Attempt at a Solution


Hard for me to attempt when I don't really understand what the question means,
 
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The Dirac delta distribution is what it is. It is unclear what you mean by it "being" ##\delta(t_1-t_2)##, this is just insertion of some argument. A delta distribution in real space has a Fourier transform which is of the form ##e^{i\omega t_0}## and not another delta distribution.

In order for us to help you, you need to specify your problem better. In particular, you need to provide the problem itself where this appeared and keep the wording exactly as provided.
 
I attached the file. We are suppose to also state any assumptions we make.
 

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I believe we need more context than this. It is not clear to me how to interpret this question and for the interpretations I can think of it does not make sense.
 
Orodruin said:
I believe we need more context than this. It is not clear to me how to interpret this question and for the interpretations I can think of it does not make sense.
It is in time and not space. We have a 2D Fourier transform. If the function is transformed correctly twice, due to two times and two frequencies, the answer should be able to be obtained.
 
I think i may have figured it out, perhaps the thread should be closed?
 

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