Some articles on ring scheme, ring, rings, scheme, ring schemes, schemes:
... The map taking a commutative ring R to the ring of Witt vectors over R (for a fixed prime p) is a functor from commutative rings to commutative rings, and is also representable, so it can be thought of as a ... The Witt scheme can be canonically identified with the spectrum of the ring of symmetric functions ... Similarly the rings of truncated Witt vectors, and the rings of universal Witt vectors, correspond to ring schemes, called the truncated Witt schemes and the ...
Famous quotes containing the words scheme and/or ring:
“I have no scheme about it,no designs on men at all; and, if I had, my mode would be to tempt them with the fruit, and not with the manure. To what end do I lead a simple life at all, pray? That I may teach others to simplify their lives?and so all our lives be simplified merely, like an algebraic formula? Or not, rather, that I may make use of the ground I have cleared, to live more worthily and profitably?”
—Henry David Thoreau (18171862)
“I started out very quiet and I beat Turgenev. Then I trained hard and I beat de Maupassant. Ive fought two draws with Stendhal, and I think I had an edge in the last one. But nobodys going to get me in any ring with Tolstoy unless Im crazy or I keep getting better.”
—Ernest Hemingway (18991961)