%0 Journal Article %T Inclusions and positive cones of von Neumann algebras %A Yoh Tanimoto %J Mathematics %D 2008 %I arXiv %X We consider cones in a Hilbert space associated to two von Neumann algebras and determine when one algebra is included in the other. If a cone is assocated to a von Neumann algebra, the Jordan structure is naturally recovered from it and we can characterize projections of the given von Neumann algebra with the structure in some special situations. %U http://arxiv.org/abs/0801.4259v2