= Neumann spectral formula for half-line constant drift
{c}
{title2=$q=I_{\mathbb R}[Q]+I_L[((ik+\alpha)Q(i\alpha-k)-(2ik+\alpha)G_1)/(ik)]$}
The reflected <global relation> expresses the unknown value trace in terms of the prescribed derivative trace. Multiplying the <half-line drift null contour identity> by $(ik+\alpha)/(ik)$ removes the reflected time-dependent transform. Its pole at $k=0$ lies below the contour and is not crossed. The formula concerns the derivative $q_x(0,t)$, rather than the outward derivative $-q_x(0,t)$.
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