St. Petersburg Mathematical Journal, 19. cilt,495-765. sayfalarAmerican Mathematical Society, 2008 |
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7 sonuçtan 1-3 arası sonuçlar
Sayfa 796
Lemma 2.5 . Let X / F be a del Pezzo surface over a separably closed field F. Then we have one of the following mutually exclusive possibilities : ( i ) X is isomorphic to P2 ; ( ii ) X is isomorphic to P1 XF P1 ; ( iii ) the canonical ...
Lemma 2.5 . Let X / F be a del Pezzo surface over a separably closed field F. Then we have one of the following mutually exclusive possibilities : ( i ) X is isomorphic to P2 ; ( ii ) X is isomorphic to P1 XF P1 ; ( iii ) the canonical ...
Sayfa 799
... del Pezzo surface of degree 6 . = ( iv ) . We may assume that F is separably closed , so that we are in the split situation of the proof of ( i ) . Let the torus T , the semidirect product T ' , and the split del Pezzo surface S be as ...
... del Pezzo surface of degree 6 . = ( iv ) . We may assume that F is separably closed , so that we are in the split situation of the proof of ( i ) . Let the torus T , the semidirect product T ' , and the split del Pezzo surface S be as ...
Sayfa 801
... del Pezzo surface of degree 6. Then : ( i ) if ns = 6 , then K and the K - algebra B are not split ; ( ii ) if S ( F ) ‡ Ø , then the K - algebra B is split . Proof . If K is split , then ng ≤ 3 by Remark 4.5 . By the same remark , if ...
... del Pezzo surface of degree 6. Then : ( i ) if ns = 6 , then K and the K - algebra B are not split ; ( ii ) if S ( F ) ‡ Ø , then the K - algebra B is split . Proof . If K is split , then ng ≤ 3 by Remark 4.5 . By the same remark , if ...
İçindekiler
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a₁ American Mathematical Society assume Aut(C automorphism Chern classes Chern structure Chevalley groups coefficients cohomology commutative ring consider construction Corollary corresponding curve cyclotomic scheme defined definition degree del Pezzo surface denote diagram divisor elementary elements embedding English transl equation equivalent extension Fo F₁ field finite formula function functor Gröbner-Shirshov basis group G H₁ Hecke operators homology homology theory homomorphism ideal implies inequality integer irreducible character isomorphism Lemma Lie algebras line bundle linear Math Mathematical Journal matrix module monomial morphism multiplication nonzero notation obtain operator paper permutation Petersburg polynomial prime pro-p group proof of Theorem Proposition prove quadratic R₁ relations representation result root S-ring satisfies semigroup sequence space statement subset sym² T₁ th² theory theta series u₁ v₁ variety vector w₁ weight