/usr/share/yacas/statistics.rep/distributions.ys is in yacas 1.3.6-1.
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 | /* Guard against distribution objects with senseless parameters
Anti-nominalism */
BernoulliDistribution(p_IsRationalOrNumber)_(p<0 Or p>1) <-- Undefined;
BinomialDistribution(_p, _n)_
(If(IsRationalOrNumber(p),p<0 Or p>1, False)
Or (IsConstant(n) And Not IsPositiveInteger(n)) )
<-- Undefined;
DiscreteUniformDistribution(a_IsRationalOrNumber, b_IsRationalOrNumber)_(a>=b)
<-- Undefined;
PoissonDistribution(l_IsRationalOrNumber)_(l<=0) <-- Undefined;
GeometricDistribution(p_IsRationalOrNumber)_(p<0 Or p>1) <-- Undefined;
ExponentialDistribution(l_IsRationalOrNumber)_(l<0) <-- Undefined;
NormalDistribution( _m , s2_IsRationalOrNumber)_(s2<=0) <-- Undefined;
ChiSquareDistribution(m_IsRationalOrNumber)_(m<=0) <-- Undefined;
tDistribution(m_IsRationalOrNumber)_(Not IsPositiveInteger(m)) <-- Undefined;
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