NEWS
changeset 5142 c56aa8b59dc0
parent 5140 216a5dab14b6
child 5145 963aff0818c2
equal deleted inserted replaced
5141:495a4f9af897 5142:c56aa8b59dc0
   147 * directory HOL/Real: a construction of the reals using Dedekind cuts
   147 * directory HOL/Real: a construction of the reals using Dedekind cuts
   148 (not included by default);
   148 (not included by default);
   149 
   149 
   150 * directory HOL/UNITY: Chandy and Misra's UNITY formalism;
   150 * directory HOL/UNITY: Chandy and Misra's UNITY formalism;
   151 
   151 
       
   152 * calling (stac rew i) now fails if "rew" has no effect on the goal
       
   153   [previously, this check worked only if the rewrite rule was unconditional]
       
   154 
   152 
   155 
   153 *** ZF ***
   156 *** ZF ***
   154 
   157 
   155 * in  let x=t in u(x), neither t nor u(x) has to be an FOL term.
   158 * in  let x=t in u(x), neither t nor u(x) has to be an FOL term.
       
   159 
       
   160 * calling (stac rew i) now fails if "rew" has no effect on the goal
       
   161   [previously, this check worked only if the rewrite rule was unconditional]
   156 
   162 
   157 
   163 
   158 *** Internal programming interfaces ***
   164 *** Internal programming interfaces ***
   159 
   165 
   160 * improved the theory data mechanism to support encapsulation (data
   166 * improved the theory data mechanism to support encapsulation (data
   167 * Simplifier now offers conversions (asm_)(full_)rewrite: simpset ->
   173 * Simplifier now offers conversions (asm_)(full_)rewrite: simpset ->
   168 cterm -> thm;
   174 cterm -> thm;
   169 
   175 
   170 * Pure: several new basic modules made available for general use, see
   176 * Pure: several new basic modules made available for general use, see
   171 also src/Pure/README;
   177 also src/Pure/README;
       
   178 
       
   179 * new tactical CHANGED_GOAL for checking that a tactic modifies a subgoal
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   182 
   175 New in Isabelle98 (January 1998)
   183 New in Isabelle98 (January 1998)
   176 --------------------------------
   184 --------------------------------