x <= y or x <= y yields True if x is determined to be less than or equal to y. x_1 <= x_2 <= x_3 yields True if the x TraditionalForm\`i form a nondecreasing sequence.

x < y yields True if x is determined to be less than y. x_1 < x_2 < x_3 yields True if the x_i form a strictly increasing sequence.

FrontEndEventActions is an option for the notebook front end that gives a list of actions to perform when specified user-interface events occur.

MenuStyle is an option for menu-generating constructs that specifies the style to use in displaying menu items.

You may find it useful to use one or more rules with an expression several times. Mathematica provides functions that let you iterate when using rules with expressions. In ...

RegionFunction is an option for plotting functions that specifies the region to include in the plot drawn.

TetGenGetRegions[expr] returns the regions in a TetGen expression.

Mathematica has powerful capabilities for explicit signal processing with large volumes of data, imported and exported in many formats, and for symbolic analysis of signal ...

Mathematica automatically sets up the infrastructure for parallel computing on standard systems, and provides a variety of tools for sharing and synchronizing definitions ...

Functions for manipulating elements in explicit lists. This gives a list with x prepended. This inserts x so that it becomes element number 2.