The ellipsis symbol is used to represent a continuation of a pattern. They are commonly used in arrays and matrices to indicate elements that are not shown.
The period symbol is used to separate the whole part of a number from the decimal part.
The vertical ellipsis symbol is used when expressing matrices in shorthand form.
The midline horizontal ellipsis symbol is used in linar algebra to abbreviate the elements of a matrix.
The up right diagonal ellipsis symbol.
The down-right diagonal ellipsis symbol appears in matrices to indicate elements that follow a pattern.