diff -r 77daf1b85cf0 -r a5f5b9336007 Separation_Algebra/README
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+This directory contains a generic type class implementation of separation
+algebra for Isabelle/HOL as well as lemmas and generic tactics which can be
+used directly for any instantiation of the type class.
+
+The ex directory contains example instantiations that include structures such
+as a heap or virtual memory.
+
+The abstract separation algebra is based upon "Abstract Separation Logic" by
+Calcagno et al. These theories are also the basis of "Mechanised Separation
+Algebra" by Klein et al.
+