The sequence of topics in the table of contents freaked me out a little: III.1 Benford’s Law 135 III.2 Bessel Functions 137 III.3 The Black–Scholes Equ

The sequence of topics in the table of contents freaked me out a little: III.1 Benford’s Law 135 III.2 Bessel Functions 137 III.3 The Black–Scholes Equation 137 III.4 The Burgers Equation 138 III.5 The Cahn–Hilliard Equation 138 III.6 The Cauchy–Riemann Equations 139 III.7 The Delta Function and Generalized Functions 139 III.8 The Diffusion Equation 142 III.9 The Dirac Equation 142 III.10 Einstein’s Field Equations 144 III.11 The Euler Equations 146 III.12 The Euler–Lagrange Equations 147 III.13 The Gamma Function 148 Benford's law, and then Bessel functions, and then Black-Scholes? The reason is that some sections are in alphabetical order, encyclopedia-style. But the pace is blistering. About a half page on the Diffusion Equation.