Do we have a general solution infinite series for the gamma function?

[mesa]

Does anyone know if we currently have an infinite series summation general solution for the gamma function such as,


$$\frac{1}{\Gamma(k)}=\sum_{n=0}^{\infty} f(n,k)$$

or,

$${\Gamma(k)}=\sum_{n=0}^{\infty} f(n,k)$$?

 

[mathman]

http://en.wikipedia.org/wiki/Gamma_function

Try the above.

 

[mesa]

http://en.wikipedia.org/wiki/Gamma_function

Try the above.

How I miss these things in wikipedia I will never know...
Okay I see the following two general solutions,

$$\Gamma(t)=x^t \sum_{n=0}^{\infty} \frac{L_n^{(t)}(x)}{t+n}$$

$$\Gamma(z) = 1+\sum_{k=1}^\infty\frac{\Gamma^{(k)}(1)}{k!}(z-1)^{k}$$

For the first one I am unfamiliar with Laguerre polynomials. Does this cause any restrictions on the input of the function?

The second one only works for the absolute value of (z-1)<1 so it is pretty limited.

Are there any others?

 

[mesa]

Well I have something much better, if anyone knows of anything else please respond.

 

[eigenperson]

1/\Gamma is an entire function, so its Taylor series converges to it everywhere. The coefficients are given at Wikipedia's article on the reciprocal gamma function.

 

[mesa]

1/\Gamma is an entire function, so its Taylor series converges to it everywhere. The coefficients are given at Wikipedia's article on the reciprocal gamma function.

Are you referring to the Taylor series as another general solution except in the form of 1/\Gamma?

 

[mesa]

Update, my function now also works for imaginary values in addition to the real number line.