title: Equivalence between maximum entropy principle and enforcing dU = TdS.
abstract: We study here a hitherto unexplored microscopic connection between the well-known thermodynamical relation dU = TdS and Jaynes' maximum entropy principle (MaxEnt) for determining probability distributions for the canonical ensemble.
authors.affiliation: La Plata National University and Argentina's National Research Council (CONICET), C. C. 727, 1900 La Plata, Argentina.
authors.forename: A
authors.initials: A
authors.lastname: Plastino
authors.forename: E M F
authors.initials: EM
authors.lastname: Curado