A2: irrational-angle contour checks

The reported parameter pairs are

• $(1-1/(2\pi ),0.3)$, $(1-1/(2\pi ),0.8)$;

• $(1-\sqrt{2}/(2\pi ),5^{-1/2})$;

• $(3^{-1/2},0.3)$, $(3^{-1/2},0.45)$, with reported $\mu =2.656$;

• $(0.3,0.37)$, $({\pi }^{-1},0.7)$, where nontrivial images occur.

The reported maximum relative differences are $3.1\times 10^{-41}$ for $F$ and $2.1\times 10^{-40}$ for $j_{\phi }$. The other current components are reported zero.

Two retained current values are

at $(1-1/(2\pi ),0.3)$, and

at $({\pi }^{-1},0.7)$. At the exact latter parameters the polynomial value is $0.007$. The full twisted tensor is the N3 case above; the AB source reports its revised reproduction at $6\times 10^{-39}$.