NEWS
changeset 30955 ef2319d6b6a5
parent 30951 a6e26a248f03
child 30957 20d01210b9b1
     1.1 --- a/NEWS	Mon Apr 20 09:32:40 2009 +0200
     1.2 +++ b/NEWS	Mon Apr 20 09:52:16 2009 +0200
     1.3 @@ -9,14 +9,18 @@
     1.4  
     1.5  *** HOL ***
     1.6  
     1.7 -* Class semiring_div now requires no_zero_divisors and proof of div_mult_mult1;
     1.8 +* Class semiring_div requires superclass no_zero_divisors and proof of div_mult_mult1;
     1.9  theorems div_mult_mult1, div_mult_mult2, div_mult_mult1_if, div_mult_mult1 and
    1.10  div_mult_mult2 have been generalized to class semiring_div, subsuming former
    1.11  theorems zdiv_zmult_zmult1, zdiv_zmult_zmult1_if, zdiv_zmult_zmult1 and zdiv_zmult_zmult2.
    1.12  div_mult_mult1 is now [simp] by default.  INCOMPATIBILITY.
    1.13  
    1.14 -* Power operation on relations and functions is now a dedicated overloaded constant
    1.15 -funpower with infix syntax "^^".  INCOMPATIBILITY.
    1.16 +* Power operations on relations and functions are now dedicated constants:
    1.17 +
    1.18 +    relpow with infix syntax "^^"
    1.19 +    funpow with infix syntax "^o"
    1.20 +
    1.21 +INCOMPATIBILITY.
    1.22  
    1.23  New in Isabelle2009 (April 2009)
    1.24  --------------------------------