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Barnes G function calculator

Evaluate the Barnes G function, which extends products of factorials.

How to use this calculator

Change BarnesG(5); the recurrence G(z+1)=Gamma(z)G(z), with G(1)=1, gives G(5)=12.

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Try it here

BarnesG⁡(5)\operatorname{BarnesG}\left(5\right)

Interactive tools require JavaScript. You can read the guide and example without it.

What to know

This is not Gamma itself. Complex branches matter for LogBarnesG.

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