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020 ▼a 9781088306895
035 ▼a (MiAaPQ)AAI13898805
040 ▼a MiAaPQ ▼c MiAaPQ ▼d 247004
0820 ▼a 510
1001 ▼a Riman, Manar.
24514 ▼a The Vanishing of the Brauer Group of a del Pezzo Surface of Degree 4.
260 ▼a [S.l.]: ▼b University of Washington., ▼c 2019.
260 1 ▼a Ann Arbor: ▼b ProQuest Dissertations & Theses, ▼c 2019.
300 ▼a 55 p.
500 ▼a Source: Dissertations Abstracts International, Volume: 81-04, Section: B.
500 ▼a Advisor: Viray, Bianca.
5021 ▼a Thesis (Ph.D.)--University of Washington, 2019.
506 ▼a This item must not be sold to any third party vendors.
506 ▼a This item must not be added to any third party search indexes.
520 ▼a A del Pezzo surface X of degree 4 over a field k can be thought of as the smooth complete intersection of 2 quadrics in P4. Arithmetic geometers are interested in computing the quotient of its Brauer group Br X/Br0 X, where Br0 X is the image of Br k in Br X. Several algorithms have been implemented to compute this quotient. The algorithms rely on a specific arithmetic input related to the solvability of certain quadrics associated to the pencil determined by X.We explicitly construct a del Pezzo surface X of degree 4 over a field k such that H1(k,Pic X) is isomorphic to Z/2Z while Br X/Br k is trivial. This proves that the algorithm to compute the Brauer group cannot be generalized in some cases.
590 ▼a School code: 0250.
650 4 ▼a Mathematics.
650 4 ▼a Algorithms.
690 ▼a 0405
71020 ▼a University of Washington. ▼b Mathematics.
7730 ▼t Dissertations Abstracts International ▼g 81-04B.
773 ▼t Dissertation Abstract International
790 ▼a 0250
791 ▼a Ph.D.
792 ▼a 2019
793 ▼a English
85640 ▼u http://www.riss.kr/pdu/ddodLink.do?id=T15491983 ▼n KERIS ▼z 이 자료의 원문은 한국교육학술정보원에서 제공합니다.
980 ▼a 202002 ▼f 2020
990 ▼a ***1008102
991 ▼a E-BOOK