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Long-Time Behavior of Systems of Fisher-KPP Type and Other Topics
Long-Time Behavior of Systems of Fisher-KPP Type and Other Topics
상세정보
- 자료유형
- 학위논문 서양
- 최종처리일시
- 20260202105610
- ISBN
- 9798265426734
- DDC
- 515
- 서명/저자
- Long-Time Behavior of Systems of Fisher-KPP Type and Other Topics
- 발행사항
- [Sl] : Stanford University, 2025
- 발행사항
- Ann Arbor : ProQuest Dissertations & Theses, 2025
- 형태사항
- 213 p
- 주기사항
- Source: Dissertations Abstracts International, Volume: 87-05, Section: B.
- 주기사항
- Advisor: Ryzhik, Leonid.
- 학위논문주기
- Thesis (Ph.D.)--Stanford University, 2025.
- 초록/해제
- 요약In this thesis, we describe results from three very different areas of mathematics. First, we present results on the long-time behavior of a cooperative system of nonlinear reaction-diffusion equations of Fisher-KPP type with interacting components, which can be associated with a multitype branching process. We determine the asymptotics of the location of the fronts and show that time-dependent solutions with initial data that are compact perturbations of a step function converge to the minimal speed traveling wave of the classic Fisher-KPP equation.In the second chapter, we apply Malliavin calculus to the stochastic heat equation in one dimension to obtain regularity results that let us provide a new proof for the existence of a density for the law of the solution.In the third chapter, we discuss physics-informed neural networks, which are neural networks that can simulate the solution to a PDE, and we propose an algorithm that improves their performance on extrapolation tasks, that is, predictions outside the temporal training domain.
- 일반주제명
- Calculus
- 일반주제명
- Growth models
- 일반주제명
- Brownian motion
- 일반주제명
- Neural networks
- 일반주제명
- Population density
- 일반주제명
- Spacetime
- 일반주제명
- Stochastic models
- 일반주제명
- Biology
- 일반주제명
- Genes
- 일반주제명
- Mathematics
- 일반주제명
- Theoretical physics
- 기타저자
- Stanford University.
- 기본자료저록
- Dissertations Abstracts International. 87-05B.
- 전자적 위치 및 접속
- 로그인 후 원문을 볼 수 있습니다.
MARC
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■006m o d
■007cr#unu||||||||
■020 ▼a9798265426734
■035 ▼a(MiAaPQ)AAI32316383
■035 ▼a(MiAaPQ)Stanforddm811kt6041
■040 ▼aMiAaPQ▼cMiAaPQ
■0820 ▼a515
■1001 ▼aStavrianidi, Alexandra.
■24510▼aLong-Time Behavior of Systems of Fisher-KPP Type and Other Topics
■260 ▼a[Sl]▼bStanford University▼c2025
■260 1▼aAnn Arbor▼bProQuest Dissertations & Theses▼c2025
■300 ▼a213 p
■500 ▼aSource: Dissertations Abstracts International, Volume: 87-05, Section: B.
■500 ▼aAdvisor: Ryzhik, Leonid.
■5021 ▼aThesis (Ph.D.)--Stanford University, 2025.
■520 ▼aIn this thesis, we describe results from three very different areas of mathematics. First, we present results on the long-time behavior of a cooperative system of nonlinear reaction-diffusion equations of Fisher-KPP type with interacting components, which can be associated with a multitype branching process. We determine the asymptotics of the location of the fronts and show that time-dependent solutions with initial data that are compact perturbations of a step function converge to the minimal speed traveling wave of the classic Fisher-KPP equation.In the second chapter, we apply Malliavin calculus to the stochastic heat equation in one dimension to obtain regularity results that let us provide a new proof for the existence of a density for the law of the solution.In the third chapter, we discuss physics-informed neural networks, which are neural networks that can simulate the solution to a PDE, and we propose an algorithm that improves their performance on extrapolation tasks, that is, predictions outside the temporal training domain.
■590 ▼aSchool code: 0212.
■650 4▼aCalculus
■650 4▼aGrowth models
■650 4▼aPartial differential equations
■650 4▼aBrownian motion
■650 4▼aNeural networks
■650 4▼aPopulation density
■650 4▼aSpacetime
■650 4▼aStochastic models
■650 4▼aBiology
■650 4▼aGenes
■650 4▼aMathematics
■650 4▼aTheoretical physics
■690 ▼a0306
■690 ▼a0800
■690 ▼a0405
■690 ▼a0753
■71020▼aStanford University.
■7730 ▼tDissertations Abstracts International▼g87-05B.
■790 ▼a0212
■791 ▼aPh.D.
■792 ▼a2025
■793 ▼aEnglish
■85640▼uhttp://www.riss.kr/pdu/ddodLink.do?id=T17360717▼nKERIS▼z이 자료의 원문은 한국교육학술정보원에서 제공합니다.


