Maiden Castle (novel) Maiden Castle (novel) Maiden Castle by John Cowper Powys was first published in 1936 and is the last of Powys so-called Wessex novels, following "Wolf Solent" (1929), "A Glastonbury Romance" (1932), "Weymouth Sands" (1934). Powys was an admirer of Thomas Hardy, and these novels are set in Somerset and Dorset, part of Hardy's mythical Wessex. American scholar Richard Maxwell describes these four novels "as remarkably successful with the reading public of his time". "Maiden Castle" is set in Dorchester, Dorset Thomas Hardy's Casterbridge, and which Powys intended to be a "rival" to Hardy's "Mayor of Casterbridge". Glen Cavaliero describes Dorchester
S (set theory) a set "x" whose members are just those sets satisfying "A"("y"). The role of "Spec" in S is analogous to that of the axiom schema of specification of Z. Boolos’s name for Zermelo set theory minus extensionality was "Z-". Boolos derived in S all axioms of "Z-" except the axiom of choice. The purpose of this exercise was to show how most of conventional set theory can be derived from the iterative conception of set, assumed embodied in S. Extensionality does not follow from the iterative conception, and so is not a theorem of S. However, S + Extensionality is