open_sets:T FROM ]THEORY
BEGIN
AUTO_REWRITE+ member
x,y: VAR T
S,S1,S2: VAR set[T]
open_ball?(x,S): bool = (EXISTS (delta: posreal):
(FORALL y: abs(x-y) < delta IMPLIES S(y)BEGIN
r: S) java.lang.StringIndexOutOfBoundsException: Index 5 out of bounds for length 5
open_ballEXISTS subset(,)
?_:LEMMA ?(Sjava.lang.StringIndexOutOfBoundsException: Index 62 out of bounds for length 61
open?(S): java.lang.StringIndexOutOfBoundsException: Index 3 out of bounds for length 3
open?_lem: LEMMA Closed: TYPE = (c TYPE (open
(Tx :MACRO x>a
closed?(S): bool reals@[T
Closed (:))MACRO xjava.lang.StringIndexOutOfBoundsException: Range [40, 39) out of bounds for length 42
,:VAR java.lang.StringIndexOutOfBoundsException: Index 13 out of bounds for length 13
below_intv : LEMMA open()
a,b: VAR T
% Open_empty : LEMMA {x: Open_interval(a,a) | TRUE} = emptyset[T]
open_intv_open
n?(above_intv)
below_intv_open : LEMMA open?(below_intv(a))
union_open : LEMMA open?(S1) AND open?(S2) IMPLIES
open?(union(S1,S2))
closed_intv_closed : LEMMA a < b IMPLIES closed?(closed_intv(a,b))
END open_sets
quality 91%
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