Most (Built-in Mathematica Symbol)

Most[expr] gives expr with the last element removed.

Patterns Involving Alternatives (Mathematica Tutorial)

Specifying patterns that involve alternatives. This defines h to give p when its argument is either a or b. The first two cases give p.

ManhattanDistance (Built-in Mathematica Symbol)

ManhattanDistance[u, v] gives the Manhattan or "city block" distance between vectors u and v.

Apply (Built-in Mathematica Symbol)

Apply[f, expr] or f @@ expr replaces the head of expr by f. Apply[f, expr, {1}] or f @@@ expr replaces heads at level 1 of expr by f.Apply[f, expr, levelspec] replaces heads ...

Use Logical Operators (Mathematica How To)

Mathematica supports logical operators not only for programming, but for mathematical operations as well.

Grouping and Combining Elements of Lists (Mathematica Tutorial)

Functions for grouping together elements of lists. Here is a list. This groups the elements of the list in pairs, throwing away the single element left at the end.

Lists as Sets (Mathematica Tutorial)

Mathematica usually keeps the elements of a list in exactly the order you originally entered them. If you want to treat a Mathematica list like a mathematical set, however, ...

Scalars, Vectors, and Matrices (Mathematica Tutorial)

Mathematica represents matrices and vectors using lists. Anything that is not a list Mathematica considers as a scalar. A vector in Mathematica consists of a list of scalars. ...

Equivalent (Built-in Mathematica Symbol)

Equivalent[e_1, e_2, ...] represents the logical equivalence e_1 \[DoubleLeftRightArrow] e_2 \[DoubleLeftRightArrow] ..., giving True when all of the e_i are the same.

Distribute (Built-in Mathematica Symbol)

Distribute[f[x_1, x_2, ...]] distributes f over Plus appearing in any of the x_i. Distribute[expr, g] distributes over g. Distribute[expr, g, f] performs the distribution ...