Formal System Based On The Sheffer Stroke
The following is an example of a formal system based entirely on the Sheffer stroke, yet having the functional expressiveness of the propositional logic:
Read more about this topic: Sheffer Stroke
Famous quotes containing the words formal, system, based and/or stroke:
“That anger can be expressed through words and non-destructive activities; that promises are intended to be kept; that cleanliness and good eating habits are aspects of self-esteem; that compassion is an attribute to be prized—all these lessons are ones children can learn far more readily through the living example of their parents than they ever can through formal instruction.”
—Fred Rogers (20th century)
“Intimately concerned as we are with the system of Europe, it does not follow that we are therefore called upon to mix ourselves on every occasion, with a restless and meddling activity, in the concerns of the nations which surround us.”
—George Canning (1770–1827)
“Collective guilt is borne by what is conventionally called the scapegoat. Now the scapegoat for white society—which is based on myths of progress, civilization, liberalism, education, enlightenment, refinement—will be precisely the force that opposes the expansion and the triumph of these myths. This brutal opposing force is supplied by the Negro.”
—Frantz Fanon (1925–1961)
“This house was designed and constructed with the freedom of stroke of a forester’s axe, without other compass and square than Nature uses.”
—Henry David Thoreau (1817–1862)