Where can I find the proof of Dirac's function properties?

Click For Summary
The Dirac delta function is a distribution rather than a conventional function, defined by its integral property that maps a test function f(x) to f(0). To find proofs of its properties, one should consult textbooks on distribution theory. A tutorial link was provided for further understanding, but it was initially invalid and has since been corrected. The discussion emphasizes the need for proper categorization of such topics, moving it to "Calculus and Analysis." Understanding the Dirac delta function is crucial for advanced mathematical applications.
abc def
Messages
1
Reaction score
0
Where can i find the proof of dirac's function properties?
 
Physics news on Phys.org
The delta "function" isn't an ordinary function; it's a distribution, and it only makes sense when you integrate it. It's *defined* by the property
\int_{-\infty}^\infty \delta(x) f(x) \;dx = f(0)
for suitable test functions f.
 
In other words, the delta function is the operator that maps f(x) to f(0).

This doesn't belong in this area. I am moving it to "Calculus and Analysis"
 
abc def said:
Where can i find the proof of dirac's function properties?

Look for a textbook that sounds like "Distribution theory" and you'll find what you need.
 
abc def said:
Where can i find the proof of dirac's function properties?
If you wish to understand what the Dirac delta "really is", and how it might be represented as a sort of "limit", then you may read the following tutorial:
https://www.physicsforums.com/showthread.php?t=73447
 
arilno, that link is invalid.
 
I've fixed it now.
 

Similar threads

  • · Replies 25 ·
Replies
25
Views
4K
  • · Replies 2 ·
Replies
2
Views
2K
  • · Replies 3 ·
Replies
3
Views
2K
  • · Replies 8 ·
Replies
8
Views
2K
  • · Replies 32 ·
2
Replies
32
Views
5K
  • · Replies 1 ·
Replies
1
Views
2K
  • · Replies 3 ·
Replies
3
Views
2K
  • · Replies 33 ·
2
Replies
33
Views
5K
Replies
5
Views
4K
  • · Replies 2 ·
Replies
2
Views
3K