The existence of stable multiquarks made heavy quarks and antiquarks is discussed in the framework potential models. It stressed that few-body problem should be handled seriously accurately. No bound state found within current But resonances are likely present spectrum above lowest threshold.

Can a group be an orthodox rational agent? This requires the group's aggregate preferences to follow expected utility (static rationality) and evolve by Bayesian updating (dynamic rationality). Group rationality is possible, but only preference aggregation rules which achieve it (and are minimally Paretian continuous) linear-geometric rules, combine individual values linearly beliefs geometrica...

Abstract In 1978, Rivest et al. (1978) proposed the concepts of data bank and fully homomorphic encryption. Some individuals organizations encrypt original store them in for privacy protection. Data is also called cloud. Therefore, cloud stores a large amount data, which obviously huge wealth. How to use these effectively? First all, we must solve problem calculation encrypted problem. Rivest, ...