It does not infer their total non-existence in a society having an authoritarian system for the simple reason that even in a totalitarian order such groups exist though they are highly restricted and thereby “serve only as instruments of the state for securing end...
Presburger arithmeticWe introduce the notion ofporous invariantsfor multipath affine loops over the integers. These are invariants definable in (fragments of) Presburger arithmetic and, as such, lack certain tame geometrical properties, such a convexity and connectedness. Nevertheless, we show that in m...