This is documentation for Mathematica 8, which was
based on an earlier version of the Wolfram Language.
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# DistributionParameterAssumptions

 DistributionParameterAssumptions[dist] gives a logical expression for assumptions on parameters in the symbolic distribution dist.
Obtain parameter assumptions for a normal distribution:
Parameter assumptions for a multinomial distribution:
Obtain parameter assumptions for a normal distribution:
 Out[1]=
Parameter assumptions for a multinomial distribution:
 Out[2]=
 Scope   (4)
Obtain assumptions for distributions with combinations of numeric and symbolic parameters:
Get assumptions for univariate and multivariate discrete and continuous distributions:
Get assumptions for a derived distribution:
Data distributions have no parameters, so the assumptions are vacuously true:
 Applications   (1)
Get the PDF for an extreme value distribution:
Compute the integral for its mean without including parameter assumptions:
Use parameter assumptions to simplify the result:
Compute the result by giving the assumptions directly to Integrate:
Compare with the mean of the distribution:
DistributionParameterAssumptions returns conditions on parameters:
DistributionParameterQ assumes symbolic parameters are valid:
With numeric parameters, the outputs are equivalent:
New in 8