⋱
Symbol  Format  Data 

⋱  Code Point 
U+22F1 
TeX 
\ddots 

SVG 
The downright diagonal ellipsis symbol appears in matrices to indicate elements that follow a pattern.
The vertical ellipsis symbol is used when expressing matrices in shorthand form.
The midline horizontal ellipsis symbol is used in linear algebra to abbreviate the elements of a matrix.
The up right diagonal ellipsis symbol.