%0 Conference Proceedings %F BFR05-DCM %A Banātre, Jean-Pierre %A Fradet, Pascal %A Radenac, Yann %T A Generalized Higher-Order Chemical Computation Model with Infinite and Hybrid Multisets %B Proceedings of 1st International Workshop on New Developments in Computational Models (DCM'05) %V 135(3) %P 3-13 %S ENTCS %I Elsevier %X Gamma is a programming model where computation is seen as chemical reactions between data represented as molecules floating in a chemical solution. Formally, this model is represented by the rewriting of a multiset where rewrite rules model the chemical reactions. Recently, we have proposed the $\gamma$-calculus, a higher-order extension, where the rewrite rules are first-class citizen. The work presented in this paper increases further the expressivity of the chemical model with generalized multisets: multiplicities of elements may be infinite and/or negative. Applications of these new notions are illustrated by some programming examples %8 March %D 2006 %K chemical programming %K higher-order conditional multiset rewriting %K infinite multisets