Relativity to Newtonian mechanics is a warp in a straightforward sense. If you believe the layout of a house consists of some rooms connected in a certain way, but there are actually more rooms connected in different ways, getting the maps to line up looks like a warp. Basically, the closer the mapping is to a true homomorphism (in the universal algebra sense), the less warping there is, otherwise there are deviations intuitively analogous to space warps.
Relativity to Newtonian mechanics is a warp in a straightforward sense. If you believe the layout of a house consists of some rooms connected in a certain way, but there are actually more rooms connected in different ways, getting the maps to line up looks like a warp. Basically, the closer the mapping is to a true homomorphism (in the universal algebra sense), the less warping there is, otherwise there are deviations intuitively analogous to space warps.