Zen Group of Western Australia Zen Group of Western Australia The Zen Group of Western Australia (ZGWA) is an organization of lay zen practitioners located in Perth, Western Australia. The ZGWA is formally affiliated with the Diamond Sangha tradition of Zen Buddhism, which was founded in Hawaii in 1959 by Robert Aitken Roshi. In keeping with Diamond Sangha tradition, the ZGWA uses rituals from both the Soto and Rinzai schools. Mediation practices of Shikantaza from the Sōtō school and koan training from the Rinzai school are typical forms of practise employed by students in the group, under the guidance of the groups roshi. ZGWA's senior
Paradoxical set Paradoxical set In set theory, a paradoxical set is a set that has a paradoxical decomposition. A paradoxical decomposition of a set is two families of disjoint subsets, along with appropriate group actions that act on some universe (of which the set in question is a subset), such that each partition can be mapped back onto the entire set using only finitely many distinct functions (or compositions thereof) to accomplish the mapping. A set that admits such a paradoxical decomposition where the actions belong to a group formula_1 is called formula_1-paradoxical or paradoxical with respect to formula_1. Paradoxical sets exist