Can Singularities Be Modeled as a Conventional Field?

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Discussion Overview

The discussion explores the possibility of modeling singularities as a conventional field, specifically examining the role of Dirac delta functions in representing these singularities and their magnitudes. The scope includes theoretical considerations and mathematical reasoning related to fields and singularities.

Discussion Character

  • Exploratory, Technical explanation, Debate/contested, Mathematical reasoning

Main Points Raised

  • One participant proposes the existence of a field f([pard](x)) that interrelates discrete Dirac delta functions, suggesting that it could represent singularities in a conventional manner.
  • Another participant argues that the concept of "various magnitudes of all the singularities" is contradictory, noting that a Dirac delta function does not have a value until integrated.
  • A different participant questions whether local Dirac singularities could still represent various magnitudes through normalization via integration.
  • One participant elaborates on the nature of the Dirac delta function, explaining its role in selecting specific values from functions during integration and drawing parallels to vector operations.

Areas of Agreement / Disagreement

Participants express differing views on the nature of singularities and the validity of representing them through Dirac delta functions, indicating that multiple competing perspectives remain without consensus.

Contextual Notes

The discussion involves assumptions about the properties of Dirac delta functions and their integration, which may not be universally accepted or defined in the same way by all participants.

Loren Booda
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Is it possible to have a field f([pard](x)) - fractal or otherwise - where [pard](x) are discrete Dirac delta functions, and f interrelates the various magnitudes of those singularities as a conventional field would for points over a continuum?
 
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I think the phrase "various magnitudes of all the singularities" is a contradiction in terms. a δ doesn't have a value until it's integrated, as in ∫f(x)δ(x-a)dx = f(a).
 
selfAdjoint,

Couldn't local Dirac singularities in my proposed field represent also various magnitudes obeying their point-by-point (distribution) normalization through overall integration?
 
Loren, go back and look at the integral I posted, notice that f(x) in there. It could be anything. What the Dirac δ does is to pick out a particular value of any function that you integrate. Dirac modeled it on the finite case of a vector like (0,1,0). If you inner multiply that by any arbitrary vector (a,b,c) you get
(a,b,c)(0,1,0) = 0*a + 1*b + 0*c = b
(so it picks out the second component, and if you used a 1 in a different place you would pick out a different component. Now in QM math the integral of the product of two "functions" is an inner product in the algebra of those functions, so δ(x-a) in the integral picks out the "a-value component" of the function.
 
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