How to Invert a Rapidly Decaying Function Without Poles?

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SUMMARY

The discussion centers on inverting rapidly decaying functions without poles, specifically questioning the applicability of the Bromwich integral for such cases. Participants suggest exploring the presence of real zeros in the function and utilizing a keyhole contour method around these zeros. The conversation also raises doubts about the Laplace invertibility of the function in question, indicating a need for further analysis.

PREREQUISITES
  • Understanding of the Bromwich integral for Laplace transforms
  • Familiarity with keyhole contour integration techniques
  • Knowledge of Laplace transform properties and conditions for invertibility
  • Basic concepts of complex analysis, particularly regarding zeros of functions
NEXT STEPS
  • Research the application of keyhole contour integration in complex analysis
  • Study the conditions under which a function is Laplace invertible
  • Explore alternative methods for inverting functions without poles
  • Investigate the implications of real zeros on the inversion of Laplace transforms
USEFUL FOR

Mathematicians, engineers, and students involved in complex analysis and Laplace transforms, particularly those seeking to understand function inversion techniques without poles.

Charles49
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I know that there is the Bromwich integral which inverts the Laplace Transform but it requires the function to have poles.

I am wondering if there is a formula for inverting a function which decays rapidly but has no poles?
 
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Not that I know of, I am looking at inverse Laplace transforms too.

Does the function have any real zeros? You might try doing a keyhole contour around the zeros.

Are you certain that this in Laplace invertable?
 

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