This is a bug in Pynac, see * https://trac.sagemath.org/ticket/22421 * https://github.com/pynac/pynac/issues/231
On 2017-02-22 08:16, Jeroen Demeyer wrote:
sage -t --long src/sage/symbolic/expression.pyx ********************************************************************** File "src/sage/symbolic/expression.pyx", line 9627, in sage.symbolic.expression.Expression.to_gamma Failed example: binomial(m,n).to_gamma() Expected: gamma(m + 1)/(gamma(m - n + 1)*gamma(n + 1)) Got: binomial(m, n) **********************************************************************
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