Sachertorte their cakes have become an integral part of Viennese culture. Bookstore/coffee houses often provide the same type of environment, a place to relax, meet friends or family and talk about important issues in peoples lives. A number of new franchises being established shows a sign that America has embraced part of this exported Viennese culture. Sachertorte Sachertorte () is a specific type of chocolate cake, or torte, invented by Austrian Franz Sacher in 1832 for Prince Wenzel von Metternich in Vienna, Austria. It is one of the most famous Viennese culinary specialties. December 5th is National Sachertorte Day in the
Proportional cake-cutting economically efficient, i.e., maximize the social welfare (defined as the sum of the utilities of all agents). For example, consider a cake which contains 500 gram chocolate and 500 gram vanilla, divided between two partners one of whom wants only the chocolate and the other wants only the vanilla. Many cake-cutting protocols will give each agent 250 gram chocolate and 250 gram vanilla. This division is proportional because each partner receives 0.5 of his total value so the normalized social welfare is 1. However, this partition is very inefficient because we could give all the chocolate to one partner and