Search results
Results from the WOW.Com Content Network
RAF Thornhill: Tiger Moth (until replaced by Chipmunk), Harvard, Anson 23 April 1947 [3] 22 January 1951 4 January 1948 [3] 30 December 1953 No. 3 ANS RAF Thornhill: Anson 5 January 1948 [3] 28 September 1951 [3] formed from elements of both 4 & 5 FTS No. 394 MU RAF Heany 1 September 1947 [3] 31 March 1954 [3] No. 395 MU RAF Bulawayo 1 ...
In mathematics, specifically algebraic geometry, a scheme is a structure that enlarges the notion of algebraic variety in several ways, such as taking account of multiplicities (the equations x = 0 and x 2 = 0 define the same algebraic variety but different schemes) and allowing "varieties" defined over any commutative ring (for example, Fermat curves are defined over the integers).
Hom(−,X) : (Affine schemes) op Sets. sending an affine scheme Y to the set of scheme maps. [4] A scheme is determined up to isomorphism by its functor of points. This is a stronger version of the Yoneda lemma, which says that a X is determined by the map Hom(−,X) : Schemes op → Sets.
Sir James Thornhill (25 July 1675 or 1676 – 4 May 1734) was an English painter of historical subjects working in the Italian baroque tradition. He was responsible for some large-scale schemes of murals, including the "Painted Hall" at the Royal Hospital, Greenwich, the paintings on the inside of the dome of St Paul's Cathedral, and works at Chatsworth House and Wimpole Hall.
All irreducible schemes are equidimensional. [5]In affine space, the union of a line and a point not on the line is not equidimensional. In general, if two closed subschemes of some scheme, neither containing the other, have unequal dimensions, then their union is not equidimensional.
Main page; Contents; Current events; Random article; About Wikipedia; Contact us; Donate
The sheaf of rational functions K X of a scheme X is the generalization to scheme theory of the notion of function field of an algebraic variety in classical algebraic geometry. In the case of algebraic varieties , such a sheaf associates to each open set U the ring of all rational functions on that open set; in other words, K X ( U ) is the ...
Motivic cohomology provides a rich invariant already for fields. (Note that a field k determines a scheme Spec(k), for which motivic cohomology is defined.)Although motivic cohomology H i (k, Z(j)) for fields k is far from understood in general, there is a description when i = j: