SphericalBesselJ[n, z] gives the spherical Bessel function of the first kind j_n (z).
SphericalBesselY[n, z] gives the spherical Bessel function of the second kind y_n (z).
"s_1" <> "s_2" <> ..., StringJoin["s_1", "s_2", ...], or StringJoin[{"s_1", "s_2", ...}] yields a string consisting of a concatenation of the s_i.
TagBox
(Built-in Mathematica Symbol) TagBox[boxes, tag] is a low-level box construct that displays as boxes but maintains tag to guide the interpretation of boxes on input.
TimeConstrained[expr, t] evaluates expr, stopping after t seconds. TimeConstrained[expr, t, failexpr] returns failexpr if the time constraint is not met.
Times
(Built-in Mathematica Symbol) x*y*z, x*y*z, or x y z represents a product of terms.
TransferFunctionExpand[tf] expands polynomial terms in the numerators and denominators of the TransferFunctionModel object tf.
UniformGraphDistribution[n, m] represents a uniform graph distribution on n-vertex, m-edge graphs.
VertexCoordinateRules is an option for GraphPlot and related functions which specifies rules for determining the coordinates at which vertices should be placed.
VertexLabeling is an option for GraphPlot and related functions which specifies whether labeling should be included by default for vertices in graphs.