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Scopus Author ID: 13608979600
Researcher Name Resolver ID: 1000030535331

Keywords

Deformation theory, Hilbert scheme, Algebraic Geometry

Countries

Japan

Biography

My field of study is Algebraic Geometry. I study the deformation theory of curves on a given fixed projective algebraic varietry. I am interested in a bad behavior of their deformations, which gives rise to a singularity of the Hilbert scheme.

Activities

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Employment (4)

Tokai University: Hiratsuka, Kanagawa, JP

2011-04-01 to present (Department of Mathematical Sciences)
Employment
Source: Self-asserted source
Hirokazu Nasu

Tokyo Denki University: Inzai, Chiba, JP

2008-10-01 to 2011-03-31 | Assistant Professor (School of Information Environment)
Employment
Source: Self-asserted source
Hirokazu Nasu

University of Oslo: Oslo, NO

2008-04-01 to 2008-09-30 | Visiting Researcher (Department of Mathematics)
Employment
Source: Self-asserted source
Hirokazu Nasu

Kyoto University: Kyoto, Kyoto, JP

2005-04-01 to 2008-03-31 | Research Fellow (COE) / Teaching Associate (part timer) (Research Institute for Mathematical Sciences)
Employment
Source: Self-asserted source
Hirokazu Nasu

Education and qualifications (3)

Kyoto University: Kyoto, JP

2001-04 to 2005-03 (Graduate school of Science)
Education
Source: Self-asserted source
Hirokazu Nasu

Nagoya University: Nagoya, JP

1997-04 to 2001-03 (Graduate School of Mathematics)
Education
Source: Self-asserted source
Hirokazu Nasu

Nagoya University: Nagoya, JP

1993-04 to 1997-03 (Department of Sciences)
Education
Source: Self-asserted source
Hirokazu Nasu

Funding (7)

Study on Hilbert schemes from the viewpoint of morphisms of algebraic varieties

2020-04-01 to 2023-03-31 | Grant
Japan Society for the Promotion of Science (Tokyo, JP)
URL: https://app.dimensions.ai/details/grant/grant.9194530
GRANT_NUMBER: 20K03541
Source: Self-asserted source
Hirokazu Nasu via DimensionsWizard

Obstructions to deforming curves on algebraic varieties and a study on their Hilbert schemes

2017-04-01 to 2021-03-31 | Grant
Japan Society for the Promotion of Science (Tokyo, JP)
URL: https://app.dimensions.ai/details/grant/grant.6831019
GRANT_NUMBER: 17K05210
Source: Self-asserted source
Hirokazu Nasu via DimensionsWizard

Moduli spaces of algebraic varieties and self-morphisms

2013-05-31 to 2018-03-31 | Grant
Japan Society for the Promotion of Science (Tokyo, JP)
URL: https://app.dimensions.ai/details/grant/grant.6113280
GRANT_NUMBER: 25220701
Source: Self-asserted source
Hirokazu Nasu via DimensionsWizard

Deformations of curves on a uniruled variety and their obstructions

2013-04-01 to 2016-03-31 | Grant
Japan Society for the Promotion of Science (Tokyo, JP)
URL: https://app.dimensions.ai/details/grant/grant.6115069
GRANT_NUMBER: 25400048
Source: Self-asserted source
Hirokazu Nasu via DimensionsWizard

Deformations of curves on a higher dimensionalalgebraic variety and their obstructions

2011-01-01 to 2012-12-31 | Grant
Japan Society for the Promotion of Science (Tokyo, JP)
URL: https://app.dimensions.ai/details/grant/grant.6069300
GRANT_NUMBER: 23740032
Source: Self-asserted source
Hirokazu Nasu via DimensionsWizard

Deformations of curves on a higher dimensional algebraic variety and their obstructions

2009-01-01 to 2010-12-31 | Grant
Japan Society for the Promotion of Science (Tokyo, JP)
URL: https://app.dimensions.ai/details/grant/grant.6030147
GRANT_NUMBER: 21740029
Source: Self-asserted source
Hirokazu Nasu via DimensionsWizard

Nasu, Hirokazu, JSPS-FY2008, long-term - Deformations of curves on a higher dimensional algebraic variety and their obstructions

Source: Self-asserted source
Hirokazu Nasu via DimensionsWizard

Works (10)

Obstructions to deforming space curves lying on a smooth cubic surface

manuscripta mathematica
2022-06-11 | Journal article
DOI: 10.1007/s00229-022-01404-z
Part of ISSN: 0025-2611
Part of ISSN: 1432-1785
Source: Self-asserted source
Hirokazu Nasu

Obstructions to deforming curves on an Enriques-Fano 3-fold

Journal of Pure and Applied Algebra
2021 | Journal article
DOI: 10.1016/j.jpaa.2021.106677
EID:

2-s2.0-85099320839

Part of ISSN: 00224049
Contributors: Nasu, H.
Source: Self-asserted source
Hirokazu Nasu via Scopus - Elsevier

Corrigendum to "obstructions to deforming curves on a 3-fold, III: Deformations of curves lying on a K 3 surface"

International Journal of Mathematics
2020 | Journal article
DOI: 10.1142/S0129167X20920019
EID:

2-s2.0-85096623117

Part of ISSN: 0129167X
Contributors: Nasu, H.
Source: Self-asserted source
Hirokazu Nasu via Scopus - Elsevier

Obstructions to deforming curves on a prime Fano 3-fold

Mathematische Nachrichten
2019 | Journal article
DOI: 10.1002/mana.201800185
EID:

2-s2.0-85063641911

Part of ISSN: 15222616 0025584X
Contributors: Nasu, H.
Source: Self-asserted source
Hirokazu Nasu via Scopus - Elsevier

Obstructions to deforming curves on a 3-fold, III: Deformations of curves lying on a K3 surface

International Journal of Mathematics
2017 | Journal article
DOI: 10.1142/S0129167X17500999
EID:

2-s2.0-85038123355

Part of ISSN: 0129167X
Contributors: Nasu, H.
Source: Self-asserted source
Hirokazu Nasu via Scopus - Elsevier

Obstructions to deforming curves on a 3-fold, II: Deformations of degenerate curves on a del Pezzo 3-fold

Annales de l'Institut Fourier
2010 | Journal article
DOI: 10.5802/aif.2555
EID:

2-s2.0-78349252683

Part of ISSN: 03730956
Contributors: Nasu, H.
Source: Self-asserted source
Hirokazu Nasu via Scopus - Elsevier

Obstructions to deforming curves on a 3-fold, I: A generalization of mumford's example and an application to Hom schemes

Journal of Algebraic Geometry
2009 | Journal article
DOI: 10.1090/s1056-3911-08-00502-x
EID:

2-s2.0-77951864465

Part of ISSN: 10563911
Contributors: Shigeru, M.; Hirokazu, N.
Source: Self-asserted source
Hirokazu Nasu via Scopus - Elsevier

The Hilbert scheme of space curves of degree d and genus 3d-18

Communications in Algebra
2008 | Journal article
DOI: 10.1080/00927870802175089
EID:

2-s2.0-57249106649

Part of ISSN: 00927872 15324125
Contributors: Nasu, H.
Source: Self-asserted source
Hirokazu Nasu via Scopus - Elsevier

Deformations of degenerate curves on a Segre 3-fold

Higher dimensional algebraic varieties and vector bundles
2008-09 | Conference paper
HANDLE: 2433/176746
Source: Self-asserted source
Hirokazu Nasu

Obstructions to deforming space curves and non-reduced components of the Hubert scheme

Publications of the Research Institute for Mathematical Sciences
2006 | Journal article
DOI: 10.2977/prims/1166642061
EID:

2-s2.0-33646772208

Part of ISSN: 00345318
Contributors: Nasu, H.
Source: Self-asserted source
Hirokazu Nasu via Scopus - Elsevier
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