Francesc Puig: 1720-1797, i els cirurgians del seu temps

Aquest llibre de Josep M.Massons, cirurgià  ell mateix, ens explica les enormes dificultats que hi hagué en el projecte de reformes executat per Francesc Puig, una figura que es pot considerar el pioner de la cirurgia catalana actual.

The Zariski-Lefschetz principle for higher homotopy groups of nongeneric pencils

We prove a general Zariski-van Kampen-Lefschetz type theorem for higher homotopy groups of generic and nongeneric pencils on singular open complex spaces.

The making of international environmental agreements

We examine in this paper the formation and the stability of international environmental agreements when cooperation means to commit to a minimum abatement level. Each country decides whether to ratify the agreement and this latter enters into force only if it is ratified by a number of countries at least equal to some ratification threshold. We analyze the role played by ratification threshold rules and provide conditions for international environmental agreements to enter into force. We show that a large typology of agreements can enter into force among the one constituted by the grand coalition.