\ellThe symbol \ell is used to represent a cursive or script lowercase 'l', often used in mathematical contexts to denote a length, a line, or a specific variable that is distinct from the standard 'l'. It is particularly useful in differentiating between similar-looking symbols in complex equations or expressions.
Assigning a value to the variable \ell, often used to denote length.
\ell = 5Using \ell as an upper limit in an integral, representing a length or boundary.
\int_0^\ell f(x) \, dxUsing \ell with subscripts to denote a series of related variables, such as different lengths or lines.
\ell_1, \ell_2, \ell_3