These symbols are used to denote a version of the 
These symbols are used to denote a version of the Poynting vector equal to half the real part of the cross product of the E-field and conjugate of the H-field. In many statements of the virial theorem, the total kinetic energy is denoted with these symbols and a T because they represent the ensemble average of a variable. These symbols and vertical bars are used in a notation that allows one to work with states without specifying a (*) basis. They're also used to symbolize a time average and, in quantum mechanics, the expectation value. They're also used to denote the operation that is a generalization of the dot product. For 10 points, name these punctuation marks that symbolize the inner product, are used in Dirac's bra-ket notation, and are not parentheses, square brackets, or curly braces
These symbols are used to denote a version of the Poynting vector equal to half the real part of the cross product of the E-field and conjugate of the H-field.
angle brackets [or: chevrons, broken brackets, brokets, greater than and less than signs, answers made with hands; prompt on: brackets]