For example, any curve on the surface of a sphere can be continuously shrunk to a point, but there are curves on a torus (curves wrapped around a hole, for instance) that cannot.
A typical HIT is a minimal problem instance that cannot be easily automated, such as categorizing a snippet of text or an image.
So, for instance, there are figures that cannot be constructed "geometrically", although they are often assumed as safe geometrical knowledge.
Merleau-Ponty evokes Proust's notion of the "little phrase" in the musical piece, which in Remembrance of Things Past signify Swann's love for Odette, as an instance of a meaning that cannot be extracted from its sensible incarnation but which, nonethelesss, is itself not strictly speaking sensible.
Besides parameter estimation, the method can be easily modified to assess the consistent model state space, so as to estimate for instance the model states that cannot be determined experimentally.
Indian philosophers who accept this principle cite supportive instances such as the knife that cannot cut itself and the finger-tip that cannot touch itself.
What is the difference between healthy generalizations, which, like "All ravens are black" are supported by their instances, and grue-type generalizations that cannot be so supported?
Water and ATP are classes in the ChEBI ontology that cannot have common instances and therefore should be declared as disjoint classes, although such a restriction is not yet included in ChEBI.
For instance, single-unit techniques may reveal functional distinctions that cannot be distinguished using fMRI.
"In rare instances postdocs willfully make the decision to work on projects that cannot be published.
