<s>
In	O
mathematical	O
logic	O
and	O
computer	B-General_Concept
science	I-General_Concept
,	O
Gabbay	B-General_Concept
's	I-General_Concept
separation	I-General_Concept
theorem	I-General_Concept
,	O
named	O
after	O
Dov	O
Gabbay	O
,	O
states	O
that	O
any	O
arbitrary	O
temporal	O
logic	O
formula	O
can	O
be	O
rewritten	O
in	O
a	O
logically	O
equivalent	O
"	O
past	O
→	O
future	O
"	O
form	O
.	O
</s>
<s>
This	O
form	O
can	O
be	O
used	O
as	O
execution	O
rules	O
;	O
a	O
MetateM	B-General_Concept
program	O
is	O
a	O
set	O
of	O
such	O
rules	O
.	O
</s>
