Concepedia

Operator Extensions

Operator Extensions is a mathematical framework in quantum theory that extends a densely defined linear operator on a Hilbert space to a larger domain while preserving its algebraic and spectral properties.

1.2K

Publications

49.7K

Citations

1.4K

Authors

747

Institutions

Publications per year

2017–2026

92

Variants

Extensions Of Operators

Parents

Publications

1.2K

An Extension Problem Related to the Fractional Laplacian

Communications in Partial Differential Equations · 2007 · 2.3K citations · Full text

, , +11

An extension problem related to the fractional Laplacian

2006 · 2.1K citations

, , +11

A Non-Commutative Extension of Abstract Integration

I. E. Segal · Annals of Mathematics · 1953 · 768 citations

, , +8

Extensions of Lipschitz mappings into a Hilbert space

William B. Johnson · Medical Entomology and Zoology · 1984 · 671 citations

, , +9

THE OPERATOR<i>K</i>-FUNCTOR AND EXTENSIONS OF<i>C</i>*-ALGEBRAS

Gennadi Kasparov · Mathematics of the USSR-Izvestiya · 1981 · 611 citations

, , +16

1–5 of 1.2K

Authors

1.4K

  1. MM
    M. M. Malamud

    Institute of Applied Mathematics and Mechanics, Ukraine

    11 publications · 748 citations

    11

    h-index

  2. PA
    Pietro Aiena

    University of Palermo, Italy

    10 publications · 367 citations

    10

    h-index

  3. SH
    Seppo Hassi

    University of Vaasa, Finland

    9 publications · 260 citations

    9

    h-index

  4. HD
    Henk de Snoo

    University of Groningen, Netherlands

    9 publications · 290 citations

    9

    h-index

  5. TF
    Takayuki Furuta

    Tokyo University of Science, Japan

    8 publications · 200 citations

    8

    h-index

1–5 of 1.4K

Institutions

747

  1. University of Palermo

    Palermo, Italy

    11 h-index

    14 publications

    463 citations

  2. University of Nis

    Niš, Serbia

    11 h-index

    17 publications

    613 citations

  3. Centre National de la Recherche Scientifique

    Paris, France

    11 h-index

    18 publications

    982 citations

  4. The University of Texas at Austin

    Austin, United States

    11 h-index

    15 publications

    2.8K citations

  5. Princeton University

    Princeton, United States

    10 h-index

    11 publications

    428 citations

  6. Babeș-Bolyai University

    Cluj-Napoca, Romania

    9 h-index

    11 publications

    361 citations

  7. University of Groningen

    Groningen, The Netherlands

    9 h-index

    14 publications

    374 citations

  8. The University of Tokyo

    Tokyo, Japan

    8 h-index

    9 publications

    691 citations

1–8 of 747

Venues

  1. Pacific Journal of Mathematics

    50 publications · 2.9K citations

    30

    h-index

  2. Proceedings of the American Mathematical Society

    PROC · 57 publications · 1.6K citations

    23

    h-index

  3. Journal of Functional Analysis

    41 publications · 1.4K citations

    22

    h-index

  4. Transactions of the American Mathematical Society

    TRAN · 30 publications · 2.2K citations

    22

    h-index

  5. Journal of Mathematical Physics

    42 publications · 1.3K citations

    21

    h-index

1–5