Topology in PVS: continuous mathematics with applications
Proceedings of the second workshop on Automated formal methods
Local Theory Specifications in Isabelle/Isar
Types for Proofs and Programs
Constructive type classes in Isabelle
TYPES'06 Proceedings of the 2006 international conference on Types for proofs and programs
Three chapters of measure theory in Isabelle/HOL
ITP'11 Proceedings of the Second international conference on Interactive theorem proving
A HOL theory of euclidean space
TPHOLs'05 Proceedings of the 18th international conference on Theorem Proving in Higher Order Logics
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The theory of analysis in Isabelle/HOL derives from earlier formalizations that were limited to specific concrete types: ℝ, ℂ and ℝn. Isabelle's new analysis theory unifies and generalizes these earlier efforts. The improvements are centered on two primary contributions: a generic theory of limits based on filters, and a new hierarchy of type classes that includes various topological, metric, vector, and algebraic spaces. These let us apply many results in multivariate analysis to types which are not Euclidean spaces, such as the extended real numbers, bounded continuous functions, or finite maps.