The reason the values are close but opposite is, I guess, because \({\rm slog}\) and \({\rm sexp}\) do are almost symmetrical along the axis \(y=-x\) in a neighborhood of the origin of the x-y plane. Add that to the fact that inverse functions are symmetrical respect to the \(x=y\) axis, and you explain the closeness.
Here's a linear interpolation of the superfunction and abel function https://www.desmos.com/calculator/xsr7yx0wnc
Here's a linear interpolation of the superfunction and abel function https://www.desmos.com/calculator/xsr7yx0wnc
Mother Law \(\sigma^+\circ 0=\sigma \circ \sigma^+ \)
\({\rm Grp}_{\rm pt} ({\rm RK}J,G)\cong \mathbb N{\rm Set}_{\rm pt} (J, \Sigma^G)\)
