The set of closed intervals of ℝ is provided with a semigroup structure. We complete this semigroup to obtain a 2-dimensional vector space. But neither associative nor nonassociative algebra structure ...

Cooperative game theory provides a robust framework for analysing how rational players can form coalitions and fairly distribute joint payoffs. Traditionally, this field has focused on transferable ...

Mathematical logic, set theory, lattices and universal algebra form an interconnected framework that underpins much of modern mathematics. At its heart, mathematical logic provides rigorous formal ...

This is a preview. Log in through your library . Abstract The theory of focal points and conjugate points is an important part of the study of problems in the calculus of variations and control theory ...