Hypergeometric2F1Regularized[a, b, c, z] is the regularized hypergeometric function \[Null]_2 F_1 (a, b; c; z)/\[CapitalGamma](c).
HypergeometricDistribution[n, n_succ, n_tot] represents a hypergeometric distribution.
HypergeometricPFQ[{a_1, ..., a_p}, {b_1, ..., b_q}, z] is the generalized hypergeometric function \[Null]_p F_q (a; b; z).
HypergeometricPFQRegularized[{a_1, ..., a_p}, {b_1, ..., b_q}, z] is the regularized generalized hypergeometric function \[Null]_p F_q (a; b; z)/(\[CapitalGamma](b_1) ... ...
HypergeometricU[a, b, z] is the confluent hypergeometric function U(a, b, z).
Hyperlink[uri] represents a hyperlink that jumps to the specified URI when clicked. Hyperlink[label, uri] represents a hyperlink to be displayed as label.
Hyphenation is an option for Cell that specifies whether to allow hyphenation for words of text.
HypothesisTestData[...] represents hypothesis test data such as generated by DistributionFitTest, AndersonDarlingTest, etc.
IdentityMatrix[n] gives the n*n identity matrix.
Identity[expr] gives expr (the identity operation).