* Isar/Pure: local results and corresponding term bindings are now
subject to Hindley-Milner polymorphism (similar to ML); this
accommodates incremental type-inference nicely;
* Isar/Pure: new calculational elements 'moreover' and 'ultimately'
support plain accumulation of results, without applying any rules yet;
tutorial Tutorial on Isabelle/HOL
intro Introduction to Isabelle
ref The Isabelle Reference Manual
isar-ref The Isabelle/Isar Reference Manual
system The Isabelle System Manual
logics Isabelle's Logics: overview and misc logics
logics-HOL Isabelle's Logics: HOL
logics-ZF Isabelle's Logics: FOL and ZF
ind-defs (Co)Inductive Definitions in ZF
axclass Tutorial on Axiomatic Type Classes