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Space of Filtrations and Singularities
Space of Filtrations and Singularities
Space of Filtrations and Singularities

Detailed Information

자료유형  
 학위논문 서양
최종처리일시  
20250211151339
ISBN  
9798382807331
DDC  
510
저자명  
Qi, Lu.
서명/저자  
Space of Filtrations and Singularities
발행사항  
[Sl] : Princeton University, 2024
발행사항  
Ann Arbor : ProQuest Dissertations & Theses, 2024
형태사항  
104 p
주기사항  
Source: Dissertations Abstracts International, Volume: 85-12, Section: B.
주기사항  
Advisor: Xu, Chenyang.
학위논문주기  
Thesis (Ph.D.)--Princeton University, 2024.
초록/해제  
요약In this thesis, we systematically study the structure of the space of saturated filtrations on a Noetherian local domain, and consider its application in commutative algebra, K-stability and birational geometry. Introduced in the joint work with Harold Blum and Yuchen Liu, saturation can be used to characterize when two filtrations have equal multiplicities, generalizing Rees' theorem concerning Hilbert-Samuel multiplicity and integral closure of ideals. Next, we present the joint work with Blum and Liu on the convexity of multiplicities along geodesics. This result allows us to prove the convexity of volumes on a single simplex in the valuation space, generalizing the result of Boucksom, Favre and Jonsson. Moreover, it gives a new proof to the uniqueness of normalized volume minimizers originally proven by Xu and Zhuang, which is part of the Stable Degeneration Conjecture. In order to justify the term geodesic, we introduce a metric d1, mimicking the Darvas metric in complex geometry and global non-archimedean geometry. The constructions endow the space of saturated filtrations with the structure of a geodesic metric space. We also define several other topologies on the space. As an application, we show some continuity properties of the log canonical threshold function, in the spirit of Kollar-Demailly.
일반주제명  
Mathematics
일반주제명  
Theoretical mathematics
키워드  
Filtrations
키워드  
Multiplicities
키워드  
Normalized volume
키워드  
Valuations
키워드  
Birational geometry
기타저자  
Princeton University Mathematics
기본자료저록  
Dissertations Abstracts International. 85-12B.
전자적 위치 및 접속  
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MARC

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■020    ▼a9798382807331
■035    ▼a(MiAaPQ)AAI31242079
■040    ▼aMiAaPQ▼cMiAaPQ
■0820  ▼a510
■1001  ▼aQi,  Lu.▼0(orcid)0000-0003-2521-3582
■24510▼aSpace  of  Filtrations  and  Singularities
■260    ▼a[Sl]▼bPrinceton  University▼c2024
■260  1▼aAnn  Arbor▼bProQuest  Dissertations  &  Theses▼c2024
■300    ▼a104  p
■500    ▼aSource:  Dissertations  Abstracts  International,  Volume:  85-12,  Section:  B.
■500    ▼aAdvisor:  Xu,  Chenyang.
■5021  ▼aThesis  (Ph.D.)--Princeton  University,  2024.
■520    ▼aIn  this  thesis,  we  systematically  study  the  structure  of  the  space  of  saturated  filtrations  on  a  Noetherian  local  domain,  and  consider  its  application  in  commutative  algebra,  K-stability  and  birational  geometry.  Introduced  in  the  joint  work  with  Harold  Blum  and  Yuchen  Liu,  saturation  can  be  used  to  characterize  when  two  filtrations  have  equal  multiplicities,  generalizing  Rees'  theorem  concerning  Hilbert-Samuel  multiplicity  and  integral  closure  of  ideals.  Next,  we  present  the  joint  work  with  Blum  and  Liu  on  the  convexity  of  multiplicities  along  geodesics.  This  result  allows  us  to  prove  the  convexity  of  volumes  on  a  single  simplex  in  the  valuation  space,  generalizing  the  result  of  Boucksom,  Favre  and  Jonsson.  Moreover,  it  gives  a  new  proof  to  the  uniqueness  of  normalized  volume  minimizers  originally  proven  by  Xu  and  Zhuang,  which  is  part  of  the  Stable  Degeneration  Conjecture.  In  order  to  justify  the  term  geodesic,  we  introduce  a  metric  d1,  mimicking  the  Darvas  metric  in  complex  geometry  and  global  non-archimedean  geometry.  The  constructions  endow  the  space  of  saturated  filtrations  with  the  structure  of  a  geodesic  metric  space.  We  also  define  several  other  topologies  on  the  space.  As  an  application,  we  show  some  continuity  properties  of  the  log  canonical  threshold  function,  in  the  spirit  of  Kollar-Demailly.
■590    ▼aSchool  code:  0181.
■650  4▼aMathematics
■650  4▼aTheoretical  mathematics
■653    ▼aFiltrations
■653    ▼aMultiplicities
■653    ▼aNormalized  volume
■653    ▼aValuations
■653    ▼aBirational  geometry
■690    ▼a0405
■690    ▼a0642
■71020▼aPrinceton  University▼bMathematics.
■7730  ▼tDissertations  Abstracts  International▼g85-12B.
■790    ▼a0181
■791    ▼aPh.D.
■792    ▼a2024
■793    ▼aEnglish
■85640▼uhttp://www.riss.kr/pdu/ddodLink.do?id=T17161319▼nKERIS▼z이  자료의  원문은  한국교육학술정보원에서  제공합니다.

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