Wessex Tales Wessex Tales Wessex Tales is an 1888 collection of tales written by English novelist and poet Thomas Hardy, many of which are set before Hardy's birth in 1840. In the various short stories, Hardy writes of the true nature of nineteenth-century marriage and its inherent restrictions, the use of grammar as a diluted form of thought, the disparities created by the role of class status in determining societal rank, the stance of women in society and the severity of even minor diseases causing the rapid onset of fatal symptoms prior to the introduction of sufficient medicinal practices. A focal point
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