2 ms·

It isn't.

• Maursault 4y ago
  Look at the first denominator seen in both lines of the equation, the last denominator in the first part of the equation, and the second denominator in the second part of the equation.
  • hoten 4y ago
    The first equations listed in the abstract of the paper are the inequalities used to derive the equation of interest, which is on the second page.