Observer Equivariance and the Residue of Physics
Observer Equivariance and the Residue of Physics In earlier posts I have described observer equivariance as a constraint on objectivity: what counts as physical law must be transportable between admissible perspectives without losing its content. The objective is not tied to one privileged point of view. It lies in what survives translation between points of view. That idea can sound abstract. A mathematical analogy may help. Illustration of the residue theorem. Source: Wikimedia Commons . Consider a contour integral around a pole in the complex plane. Locally, the integrand varies from point to point along the contour. Its value depends on where one is. But the remarkable fact is that the contour itself may be deformed quite freely, so long as it does not cross the pole. What remains unchanged through these admissible deformations is the residue . It is not the value of the integrand at any one point. It is the structurally stable remainder revealed by the com...
