• 제목/요약/키워드: homology

검색결과 1,593건 처리시간 0.023초

BALANCE FOR RELATIVE HOMOLOGY WITH RESPECT TO SEMIDUALIZING MODULES

  • Di, Zhenxing;Zhang, Xiaoxiang;Chen, Jianlong
    • 대한수학회보
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    • 제52권1호
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    • pp.137-147
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    • 2015
  • We derive in the paper the tensor product functor -${\otimes}_R$- by using proper $\mathcal{GP}_C$-resolutions, where C is a semidualizing module. After giving several cases in which different relative homologies agree, we use the Pontryagin duals of $\mathcal{G}_C$-projective modules to establish a balance result for such relative homology over a Cohen-Macaulay ring with a dualizing module D.

MANIFOLDS WITH TRIVIAL HOMOLOGY GROUPS IN SOME RANGE AS CODIMENSION-K FIBRATORS

  • Im, Young-Ho
    • 대한수학회논문집
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    • 제25권2호
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    • pp.283-289
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    • 2010
  • Approximate fibrations provide a useful class of maps. Fibrators give instant detection of maps in this class, and PL fibrators do the same in the PL category. We show that rational homology spheres with some additional conditions are codimension-k PL fibrators and PL manifolds with trivial homology groups in some range can be codimension-k (k > 2) PL fibrators.

ON THE HOMOLOGY OF SCHUR COMPLEXES

  • Choi, Eun-J.;Kim, Young-H.;Kyoung, Il-H.;Won, Seung-J.
    • 대한수학회논문집
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    • 제17권3호
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    • pp.389-401
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    • 2002
  • We give an upper bound for the degrees of the nonvanishing homology modules of the Schur complex L$\sub$λ/${\mu}$/ø in terms of the depths of the determinantal ideals of ø). Using this fact, we obtain the acyclic theorem for L$\sub$λ/ø and the information concerning the support of the homology modules of L$\sub$λ/${\mu}$/ø.

RATIONAL HOMOLOGY DISK SMOOTHINGS AND LEFSCHETZ FIBRATIONS

  • Hakho Choi
    • 대한수학회지
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    • 제60권1호
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    • pp.227-253
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    • 2023
  • In this article, we generalize the results discussed in [6] by introducing a genus to generic fibers of Lefschetz fibrations. That is, we give families of relations in the mapping class groups of genus-1 surfaces with boundaries that represent rational homology disk smoothings of weighted homogeneous surface singularities whose resolution graphs are 3-legged with a bad central vertex.

(CO)HOMOLOGY OF A GENERALIZED MATRIX BANACH ALGEBRA

  • M. Akbari;F. Habibian
    • 한국수학교육학회지시리즈B:순수및응용수학
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    • 제30권1호
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    • pp.15-24
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    • 2023
  • In this paper, we show that bounded Hochschild homology and cohomology of associated matrix Banach algebra 𝔊(𝔄, R, S, 𝔅) to a Morita context 𝔐(𝔄, R, S, 𝔅, { }, [ ]) are isomorphic to those of the Banach algebra 𝔄. Consequently, we indicate that the n-amenability and simplicial triviality of 𝔊(𝔄, R, S, 𝔅) are equivalent to the n-amenability and simplicial triviality of 𝔄.

Homology Modeling of Cysteinyl Leukotriene1 Receptor

  • Babu, Sathya;Madhavan, Thirumurthy
    • 통합자연과학논문집
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    • 제8권1호
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    • pp.13-18
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    • 2015
  • Cysteinyl leukotrienes are inflammatory mediators having important role in pathophysiological conditions such as asthma, allergic rhinitis and have been implicated in a number of inflammatory conditions including cardiovascular and gastrointestinal diseases. Most of the disease regulatory actions of the CysLTs are mediated through CysLT1 receptor. Hence in the present study, homology modeling of CysLT1 was performed because the availability of 3D structure would enhance the development of new drugs for inflammatory diseases. However the templates identified have low sequence identity which increases the complexity of modeling. Hence, homology modeling was performed using single template, multiple templates and also using threading I-TASSER server. The best model was selected based on the validation of the generated models using Ramachandran and ERRAT plot. The model developed could be useful for identifying crucial residues and docking study.