. . .
Background - why math symbols are used. . .
Symbols are a concise way of giving lengthy instructions related to
numbers and logic.
Symbols are an invention, not a discovery. They are a
communication tool. Symbols are used to eliminate
the need to write long, plain language instructions to describe
calculations and other processes.
The most valuable, most frequently used Math Symbols . . .
The most important, most frequently used Grouping symbols
are listed below.
Angle Brackets (also called "chevrons" or "diamond brackets") -
The Angle Bracket symbols and the Less-Than/Greater-Than inequality symbols have a similar appearance.
A side by side comparison is shown below:
Less Than/Greater Than
Angle Brackets (also called "chevrons") are not generally used as grouping symbols (bare delimiters) in mathematics.
They could be . . . but, normally they are only used for very narrow, specialized purposes. These include grouping symbols for commands in html, delimiters identifying a complete e-mail address, symbols used to enclose text, specialized uses in quantum mechanics, etc.
Less Than/Greater Than inequality symbols are often used to represent angle brackets.