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JSYML
2010
89views more  JSYML 2010»
14 years 6 months ago
The consistency strength of choiceless failures of SCH
We determine exact consistency strengths for various failures of the Singular Cardinals Hypothesis (SCH) in the setting of the Zermelo-Fraenkel axiom system ZF without the Axiom o...
Arthur W. Apter, Peter Koepke
WINE
2010
Springer
144views Economy» more  WINE 2010»
14 years 9 months ago
An Axiomatic Characterization of Continuous-Outcome Market Makers
Abstract. Most existing market maker mechanisms for prediction markets are designed for events with a finite number of outcomes. All known attempts on designing market makers for f...
Xi Alice Gao, Yiling Chen
CADE
2006
Springer
16 years 17 hour ago
Extracting Programs from Constructive HOL Proofs Via IZF Set-Theoretic Semantics
Church's Higher Order Logic is a basis for proof assistants -- HOL and PVS. Church's logic has a simple set-theoretic semantics, making it trustworthy and extensible. We ...
Robert L. Constable, Wojciech Moczydlowski
MLQ
2010
226views more  MLQ 2010»
14 years 10 months ago
The Ultrafilter Closure in ZF
: It is well known that, in a topological space, the open sets can be characterized using filter convergence. In ZF (Zermelo-Fraenkel set theory without the Axiom of Choice), we c...
Gonçalo Gutierres
CADE
2006
Springer
16 years 16 hour ago
On the Strength of Proof-Irrelevant Type Theories
We present a type theory with some proof-irrelevance built into the conversion rule. We argue that this feature is useful when type theory is used as the logical formalism underlyi...
Benjamin Werner