In addition to the ordinary characters that appear on a standard keyboard, you can include in Mathematica strings any of the special characters that are supported by ...
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Collect
(Built-in Mathematica Symbol) Collect[expr, x] collects together terms involving the same powers of objects matching x. Collect[expr, {x_1, x_2, ...}] collects together terms that involve the same powers ...
Shorthand notations are a part of Mathematica 's rich syntax system that allows multiple ways to feed arguments to functions. In addition to creating compact code, using ...
StringReplace["string", s -> sp] or StringReplace["string", {s_1 -> sp_1, s_2 -> sp_2, ...}] replaces the string expressions s_i by sp_i whenever they appear as substrings of ...
FindClique[g] finds a clique with maximum number of vertices in the graph g.
Quit
(Built-in Mathematica Symbol) Quit[] terminates a Mathematica kernel session.
TextClipboardType is an option for cells that specifies how Edit \[FilledRightTriangle] Copy treats a cell when converting it for the system's textual clipboard.
UpSet
(Built-in Mathematica Symbol) lhs ^= rhs assigns rhs to be the value of lhs, and associates the assignment with symbols that occur at level one in lhs.
Simplifying with assumptions. Mathematica does not automatically simplify this, since it is only true for some values of x. Sqrt[x^2] is equal to x for x≥0, but not otherwise.