Theorem: J(1) - 2 = 0 (Joukowski transform real-axis boundary)

Theorem (Joukowski-real-boundary canonical): J(z) = z + 1/z evaluated at z=1 gives J(1) = 2 exactly. Canonical sympy pin: z = sp.Symbol('z'); J = z + 1/z; residual = sp.simplify(J.subs(z, 1) - 2) = '0' identically. Physical significance:…