NEWS
changeset 67830 4f992daf4707
parent 67764 0f8cb5568b63
child 67831 07f5588f2735
equal deleted inserted replaced
67829:2a6ef5ba4822 67830:4f992daf4707
     6 
     6 
     7 New in this Isabelle version
     7 New in this Isabelle version
     8 ----------------------------
     8 ----------------------------
     9 
     9 
    10 *** General ***
    10 *** General ***
       
    11 
       
    12 * New, more general, axiomatization of complete_distrib_lattice. 
       
    13 The former axioms:
       
    14 "sup x (Inf X) = Inf (sup x ` X)" and "inf x (Sup X) = Sup (inf x ` X)"
       
    15 are replaced by 
       
    16 "Inf (Sup ` A) <= Sup (Inf ` {f ` A | f . (! Y \<in> A . f Y \<in> Y)})"
       
    17 The instantiations of sets and functions as complete_distrib_lattice 
       
    18 are moved to Hilbert_Choice.thy because their proofs need the Hilbert
       
    19 choice operator. The dual of this property is also proved in 
       
    20 Hilbert_Choice.thy.
    11 
    21 
    12 * Marginal comments need to be written exclusively in the new-style form
    22 * Marginal comments need to be written exclusively in the new-style form
    13 "\<comment> \<open>text\<close>", old ASCII variants like "-- {* ... *}" are no longer
    23 "\<comment> \<open>text\<close>", old ASCII variants like "-- {* ... *}" are no longer
    14 supported. INCOMPATIBILITY, use the command-line tool "isabelle
    24 supported. INCOMPATIBILITY, use the command-line tool "isabelle
    15 update_comments" to update existing theory files.
    25 update_comments" to update existing theory files.