The mereology of thermodynamic equilibrium

The special composition question (SCQ), which asks under conditions objects compose a further object, establishes central debate in modern metaphysics. Recent successes of inductive metaphysics, studies the implications natural sciences for metaphysical problems, suggest that insights into SCQ can be gained by investigating physics composite systems. In this work, I show minus first law thermodynamics, is concerned with approach to equilibrium, leads new SCQ, thermodynamic principle (TCP): Multiple systems (generalized) thermal contact single system. This principle, justified based on systematic classification possible mereological models systems, form basis an argument universalism. A formal analysis TCP provided mereotopology, combination mereology and topology. Here, "thermal contact" analyzed using mereotopological predicate "self-connectedness". Self-connectedness has defined terms sums ensure scattered cannot self-connected.