SetFileDate (Built-in Mathematica Symbol)

SetFileDate["file"] sets the modification and access dates for a file to be the current date.

Using Assumptions (Mathematica Tutorial)

Mathematica normally makes as few assumptions as possible about the objects you ask it to manipulate. This means that the results it gives are as general as possible. But ...

AlgebraicUnitQ (Built-in Mathematica Symbol)

AlgebraicUnitQ[a] yields True if a is an algebraic unit, and yields False otherwise.

Algebraic Calculations (Mathematica Overview)

Symbolic Computation Values for Symbols Transforming Algebraic Expressions

AlgebraicIntegerQ (Built-in Mathematica Symbol)

AlgebraicIntegerQ[a] yields True if a is an algebraic integer, and yields False otherwise.

File > Printing Settings > Printing ... (Mathematica Menu Item)

Printing Environment determines which style environment to use for printing.

Do Linear Algebra (Mathematica How To)

These "How tos" give step-by-step instructions for common tasks related to linear algebra in Mathematica .

File > Printing Settings > Printing ... (Mathematica Menu Item)

Printing Options sets options for printing a notebook. Mathematica saves these settings with the notebook.

Algebraic Manipulation (Mathematica Overview)

Structural Operations on Polynomials Finding the Structure of a Polynomial Polynomial Orderings

$CharacterEncoding (Built-in Mathematica Symbol)

$CharacterEncoding specifies the default raw character encoding to use for input and output functions.