Gamma function convergence of an integral

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SUMMARY

The Gamma function, defined as ##\Gamma(x)=\int^{\infty}_0 t^{x-1}e^{-t}dt##, converges for all positive values of ##x## and also for negative non-integer values, contrary to common belief. The discussion emphasizes the importance of using the recursive formula for the Gamma function to evaluate these negative non-integer values. Additionally, the concept of analytic continuation is highlighted as a method to extend the function's representation beyond its initial domain.

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  • Familiarity with integral calculus and convergence criteria
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  • Basic concepts of analytic continuation in complex analysis
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  • Explore the concept of analytic continuation in greater detail
  • Investigate convergence criteria for integrals involving complex variables
  • Review literature on the behavior of the Gamma function for negative non-integer values
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LagrangeEuler
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##\Gamma(x)=\int^{\infty}_0 t^{x-1}e^{-t}dt## converge for ##x>0##. But it also converge for negative noninteger values. However many authors do not discuss that. Could you explain how do examine convergence for negative values of ##x##.
 
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I'm pretty sure it doesn't converge for negative noninteger values and that the formula is not applicable there. Use the recursive formula for the Gamma function instead to get those values.
 
There is a general concept called analytic continuation, where a function has a particular representation in some domain can be extended outside this domain.
 

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