non-rigid

Researchers have developed software allowing a robot to fold towels without human help, a feat previously not accomplished in robot history due to the complexity of handling non-rigid objects.

Berkeley Researchers Create Towel-Folding Robot 2010

An expression is non-rigid if, when uttered in a fixed context, it varies its reference with the circumstances under which it is evaluated.

Fitch's Paradox of Knowability Brogaard, Berit 2009

Accordingly, on this account, the quantified expression that Kp abbreviates is non-rigid.

Fitch's Paradox of Knowability Brogaard, Berit 2009

There are two ways to rigidify a non-rigid definite description.

Names Cumming, Sam 2009

Let our quantifiers range over persons, and let ˜i™ be the non-rigid designator ˜the inventor of bifocals™.

Fitch's Paradox of Knowability Brogaard, Berit 2009

¬ ˆƒ x ˆƒ t (Kxpt), for p in the knowability principle, he substituted for p a non-rigid designator, thereby altering the reference of the conjunction and perpetrating a modal fallacy.

Fitch's Paradox of Knowability Brogaard, Berit 2009

Kvanvig proposes that quantified expressions are non-rigid.

Fitch's Paradox of Knowability Brogaard, Berit 2009

ˆ§ ¬ ˆƒ x ˆƒ t (Kxpt), which says p is true but nobody ever knows that p. The quantified expression is, on this view, a non-rigid designator.

Fitch's Paradox of Knowability Brogaard, Berit 2009

And so, even if Fitch's conjunction is an indexical expression, we have not been given a reason to think that it is non-rigid.

Fitch's Paradox of Knowability Brogaard, Berit 2009

Analogously, even if quantified expressions are indexicals, it does not follow that they are non-rigid.

Fitch's Paradox of Knowability Brogaard, Berit 2009