Dialogs (Mathematica Tutorial)

Within a standard interactive session, you can create "subsessions" or dialogs using the Mathematica command Dialog. Dialogs are often useful if you want to interact with ...

Using a Text-Based Interface (Mathematica Tutorial)

The standard front end interface, as discussed in "Using a Notebook Interface", is appropriate for most users' purposes. In some cases, however, you may not need to use the ...

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.

Atomic Elements of Expressions (Mathematica Guide)

All expressions in Mathematica are ultimately built from a small number of distinct types of atomic elements.

Symbol Handling (Mathematica Guide)

Mathematica symbols are the ultimate atoms of symbolic data. Every symbol has a unique name, exists in a certain Mathematica context or namespace, and can have a variety of ...

Character Operations (Mathematica Guide)

Mathematica has efficient systemwide 16-bit Unicode support, allowing a full range of international, technical and other character sets and character encodings.

Elements of Lists (Mathematica Guide)

Mathematica provides a carefully chosen set of functions for accessing elements of lists either using indices or positions, or using patterns or criteria for their values.

Operations on Vectors (Mathematica Guide)

Mathematica represents vectors as lists, and never needs to distinguish between row and column cases. Vectors in Mathematica can always mix numbers and arbitrary symbolic or ...

Testing Expressions (Mathematica Guide)

Mathematica symbolic expressions can represent an immense range of types of objects. Mathematica provides a rich collection of functions to test expressions. Functions that ...

TrueQ (Built-in Mathematica Symbol)

TrueQ[expr] yields True if expr is True, and yields False otherwise.