*Note: trigger LaTeX with "/math"

Brackets & Parenthesis

\\{ x+y \\}

\\langle x+y \\rangle

|x+y|

\\|x+y\\|

Bracket Sizing & Adjustment

\\big( \\Big( \\bigg( \\Bigg(

\\big) \\Big) \\bigg) \\Bigg)

Etc ...

Fractions

\\frac{1}{2}

Write Superscripts & Subscripts

x^n + y^n = z^n

a_1^2 + a_2^2 = a_3^2

Write Operators using subscripts & superscripts

\\sum_{i=1}^{\\infty} \\frac{1}{n^s} = \\prod_p \\frac{1}{1 - p^{-s}}

More Examples Here