It is also important to note that the operator (2) is well defined, that is, it maps simplex into itself.
Good luck defining that one legally -- it would actually be an entirely new concept in Russian legislation, with no foundation statute to set its terms.
At each stage in Kripke's construction, the truth predicate is only partially defined, that is, it only applies to some of the sentences of the language.
When something goes wrong, however one defines that, it helps explain why a disillusioned parent might turn anywhere for help.
I'm aware that the rule has changed, both formally and informally, but it seems to me to have reached the point where the infraction has become so hard to define that it's impossible to enforce.
In 1302, Pope Boniface VIII, the successor to the unfortunate Celestine, issued a papal bull that stated, "We declare, we proclaim, we define that it is absolutely necessary for salvation that every human creature be subject to the Roman Pontiff".
Russian jurists and legislators have sought to outlaw "gay propaganda" (which is so loosely defined that it can include anything from gay-pride parades to holding hands on the street).
"And yet when you investigate and say, 'Define that,' it turns out it may be in many cases, 'We have somebody who's going to help them process their G.I. Bill checks.' " There are plenty of checks to cash.
The mean activity coefficient γ± is so defined that it approaches a value of unity at very low molality where the ions are so far apart that they exert negligible influence on one another.
David Bohm (Böhm and Nichol 1998) in his book defined that it is very difficult to define creativity in words.
