HurwitzLerchPhi[z, s, a] gives the Hurwitz\[Dash]Lerch transcendent \[CapitalPhi](z, s, a).
HurwitzZeta[s, a] gives the Hurwitz zeta function \[Zeta](s, a).
HyperbolicDistribution[\[Alpha], \[Beta], \[Delta], \[Mu]] represents a hyperbolic distribution with location parameter \[Mu], scale parameter \[Delta], shape parameter ...
HypercubeGraph[n] gives the n-dimensional hypercube graph Q_n.
Hyperfactorial[n] gives the hyperfactorial function H(n).
Hypergeometric0F1[a, z] is the confluent hypergeometric function \[Null]_0 F_1 (; a; z).
Hypergeometric0F1Regularized[a, z] is the regularized confluent hypergeometric function \[Null]_0 F_1 (a; z)/\[CapitalGamma](a).
Hypergeometric1F1[a, b, z] is the Kummer confluent hypergeometric function \[Null]_1 F_1 (a; b; z).
Hypergeometric1F1Regularized[a, b, z] is the regularized confluent hypergeometric function \[Null]_1 F_1 (a; b; z)/\[CapitalGamma](b).
Hypergeometric2F1[a, b, c, z] is the hypergeometric function \[InvisiblePrefixScriptBase]_2 F_1 (a, b; c; z).