NEWS
changeset 63923 c9bba9dba73b
parent 63920 003622e08379
child 63933 e149e3e320a3
equal deleted inserted replaced
63922:d184a824aa63 63923:c9bba9dba73b
   273 * Theory Library/Combinator_PER.thy: combinator to build partial
   273 * Theory Library/Combinator_PER.thy: combinator to build partial
   274 equivalence relations from a predicate and an equivalence relation.
   274 equivalence relations from a predicate and an equivalence relation.
   275 
   275 
   276 * Theory Library/Perm.thy: basic facts about almost everywhere fix
   276 * Theory Library/Perm.thy: basic facts about almost everywhere fix
   277 bijections.
   277 bijections.
       
   278 
       
   279 * Theory Library/Normalized_Fraction.thy: allows viewing an element 
       
   280 of a field of fractions as a normalized fraction (i.e. a pair of 
       
   281 numerator and denominator such that the two are coprime and the 
       
   282 denominator is normalized w.r.t. unit factors)
   278 
   283 
   279 * Locale bijection establishes convenient default simp rules
   284 * Locale bijection establishes convenient default simp rules
   280 like "inv f (f a) = a" for total bijections.
   285 like "inv f (f a) = a" for total bijections.
   281 
   286 
   282 * Former locale lifting_syntax is now a bundle, which is easier to
   287 * Former locale lifting_syntax is now a bundle, which is easier to