Operator brackets, also known as Bra-kets (angle brackets with a vertical line in between), are common in Physics notation: &quot; langle a mline b rangle &quot; or &quot; langle a mline b mline c over d mline e rangle. &quot; The height and positioning of the vertical lines always corresponds exactly to the enclosing brackets.
Los corchetes separados por una barra vertical se utilizan con frecuencia en el ámbito de la física: &quot; langle a mline b rangle &quot; o &quot; langle a mline b mline c over d mline e rangle &quot; .