Concepedia

Ext Functors

Ext Functors is a sequence of derived functors in homological algebra that extend the Hom functor to measure the failure of exactness, specifically classifying extensions of modules by computing the cohomology of chain complexes derived from projective or injective resolutions.

83

Publications

3.4K

Citations

112

Authors

83

Institutions

Publications per year

2017–2026

4

Variants

Ext-functors

Parents

Publications

83

Noetherian hereditary abelian categories satisfying Serre duality

Idun Reiten, Michel Van den Bergh · Journal of the American Mathematical Society · 2002 · 347 citations · Full text

, , +9

A class ofC *-algebras and topological markov chains II: Reducible chains and the ext-functor forC *-algebras

Joachim Cuntz · Inventiones mathematicae · 1981 · 294 citations

, , +10

Relative homological algebra

G. Hochschild · Transactions of the American Mathematical Society · 1956 · 233 citations · Full text

, , +15

Gorenstein projective dimension for complexes

Oana Veliche · Transactions of the American Mathematical Society · 2005 · 115 citations · Full text

, , +16

Quillen model structures for relative homological algebra

J. Daniel Christensen, Mark Hovey · Mathematical Proceedings of the Cambridge Philosophical Society · 2002 · 97 citations · Full text

, , +16

1–5 of 83

Authors

112

  1. JT
    Jan Trlifaj

    Charles University, Czechia

    3 publications · 95 citations

    3

    h-index

  2. PC
    Paul C. Eklof

    University of California, Irvine, United States

    2 publications · 81 citations

    2

    h-index

  3. SO
    Sverre O. Smalø

    Brandeis University, United States

    2 publications · 91 citations

    2

    h-index

  4. JP
    J. P. Jans

    University of Washington, United States

    2 publications · 37 citations

    2

    h-index

  5. IR
    Idun Reiten

    Norwegian University of Science and Technology, Norway

    2 publications · 421 citations

    2

    h-index

1–5 of 112

Institutions

83

  1. University of Kansas

    Lawrence, United States

    4 h-index

    5 publications

    178 citations

  2. University of Illinois Urbana-Champaign

    Urbana, United States

    3 h-index

    6 publications

    348 citations

  3. University of Washington

    Seattle, United States

    3 h-index

    5 publications

    223 citations

  4. Norwegian University of Science and Technology

    Trondheim, Norway

    3 h-index

    3 publications

    440 citations

  5. Bielefeld University

    Bielefeld, Germany

    2 h-index

    2 publications

    126 citations

  6. Fudan University

    Shanghai, China

    2 h-index

    2 publications

    87 citations

  7. Université Paris Cité

    Paris, France

    2 h-index

    4 publications

    263 citations

  8. University of California, Berkeley

    Berkeley, United States

    2 h-index

    3 publications

    167 citations

1–8 of 83

Venues

  1. Communications in Algebra

    8 publications · 161 citations

    8

    h-index

  2. Transactions of the American Mathematical Society

    TRAN · 6 publications · 527 citations

    6

    h-index

  3. Journal of Algebra

    6 publications · 166 citations

    6

    h-index

  4. Pacific Journal of Mathematics

    5 publications · 226 citations

    5

    h-index

  5. ArXiv.org

    Repository · 4 publications · 106 citations

    4

    h-index

1–5