unsolvability

In particular, he proved the unsolvability of the halting problem.

Computability and Complexity Immerman, Neil 2008

If one takes the uncertainty principle as a primitive and the unsolvability of the many-body problem as a given, it seems to me that microscopic irreversibility follows as the source of a quantum second law and the source of the arrow of time.

Arrow of Time FAQ Sean 2007

Instead of referring to the "apparent unsolvability" of a choice between the quarto and the folio texts — and claiming that it is a "damaging ... breach" in "literary culture" — why not accept the two versions of Lear's last words, and the final scene more generally, as independent and equally valid alternatives?

'The Shakespeare Wars' Rosenbaum, Ron 2007

But she is one of the most explicit in noting its obscenity, its terribleness as well as its almost comedic unsolvability.

Leave Them and Love Them 2004

But she is one of the most explicit in noting its obscenity, its terribleness as well as its almost comedic unsolvability.

Leave Them and Love Them 2004

There was much argument — the usual charges and countercharges — but, finally, because of her weariness of heart, his petting, the unsolvability of it all, she permitted him for the time being to persuade her that there were still some crumbs of affection left.

The Titan 2004

There was much argument -- the usual charges and countercharges -- but, finally, because of her weariness of heart, his petting, the unsolvability of it all, she permitted him for the time being to persuade her that there were still some crumbs of affection left.

The Titan Theodore Dreiser 1908