Operads are algebraic devices offering a formalization of the concept of operations with several inputs and one output. Such operations can be naturally compose

This monograph has two main objectives. The first one is to give a self-contained exposition of the relevant facts about set operads, in the context of combinat

In many areas of mathematics some “higher operations” are arising. These havebecome so important that several research projects refer to such expressions. H

This volume composed of twenty four research articles which are selected from the keynote speakers and invited lectures presented in the 3rd International Congr

This book is based on the mini-workshop Renormalization, held in December 2006, and the conference Combinatorics and Physics, held in March 2007. Both meetings