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Limit shapes of Gibbs distributions on the set of integer partitions : the expansive case

Michael M. Erlihson, Boris L. Granovsky (2008)

Annales de l'I.H.P. Probabilités et statistiques

We find limit shapes for a family of multiplicative measures on the set of partitions, induced by exponential generating functions with expansive parameters, ak∼Ckp−1, k→∞, p>0, where C is a positive constant. The measures considered are associated with the generalized Maxwell–Boltzmann models in statistical mechanics, reversible coagulation–fragmentation processes and combinatorial structures, known as assemblies. We prove a central limit theorem for fluctuations of a properly scaled partition...

M 2 -rank differences for partitions without repeated odd parts

Jeremy Lovejoy, Robert Osburn (2009)

Journal de Théorie des Nombres de Bordeaux

We prove formulas for the generating functions for M 2 -rank differences for partitions without repeated odd parts. These formulas are in terms of modular forms and generalized Lambert series.

Matrix compositions.

Munarini, Emanuele, Poneti, Maddalena, Rinaldi, Simone (2009)

Journal of Integer Sequences [electronic only]

Mince zajímají nejen numismatiky

Ľubomíra Dvořáková, Marie Dohnalová (2017)

Pokroky matematiky, fyziky a astronomie

V článku představíme dva druhy úloh týkajících se platby mincemi, které souvisejí s optimalitou počtu použitých mincí. V případě problému platby (říká se také rozměňování — anglicky change making problem), tj. skládání částky z mincí bez možnosti vracení, jsou úlohy spojené s optimalitou dobře prozkoumané. Analogické úlohy zformulujeme pro směnu, tj. skládání částky z mincí s možností vracení. Zde zůstává naopak řada problémů otevřená.

Mock modular forms and singular combinatorial series

Amanda Folsom, Susie Kimport (2013)

Acta Arithmetica

A celebrated result of Bringmann and Ono shows that the combinatorial rank generating function exhibits automorphic properties after being completed by the addition of a non-holomorphic integral. Since then, automorphic properties of various related combinatorial families have been studied. Here, extending work of Andrews and Bringmann, we study general infinite families of combinatorial q-series pertaining to k-marked Durfee symbols, in which we allow additional singularities. We show that these...

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