An accent mark placed above a letter or symbol to indicate a rising pitch or acute stress in mathematical notation.
Examples
Single variable with acute accent, commonly used in physics for modified variables
\acute{a} = a + \Delta a
Multiple accented variables in an equation, often seen in mathematics and physics
\acute{x} + \acute{y} = \acute{z}
Used in linear algebra to denote transformed or modified vectors
\vec{\acute{v}} = T(\vec{v})