Concepedia

Ulam Matrix

An Ulam Matrix is a family of subsets of a regular uncountable cardinal indexed by the first uncountable ordinal, arranged in such a way that each column consists of pairwise disjoint stationary sets, thereby serving as a combinatorial tool in set theory to analyze the structure of stationary sets and derive properties related to diagonal intersections and ineffable cardinals.

53

Publications

2.5K

Citations

75

Authors

60

Institutions

Publications per year

2017–2026

16

Parents

Publications

53

Solution of a problem of Ulam

John Michael Rassias · Journal of Approximation Theory · 1989 · 321 citations

, , +2

Ulam’s type stability of impulsive ordinary differential equations

JinRong Wang, Michal Fec ̆kan, Yong Zhou · Journal of Mathematical Analysis and Applications · 2012 · 257 citations

, , +11

Nonlinear impulsive problems for fractional differential equations and Ulam stability

JinRong Wang, Yong Zhou, Michal Fec ̆kan · Computers & Mathematics with Applications · 2012 · 242 citations

, , +12

Google matrix analysis of directed networks

Leonardo Ermann, Klaus M. Frahm, Dima L. Shepelyansky · Reviews of Modern Physics · 2015 · 157 citations · Full text

, , +16

On Ulam’s Stability for a Coupled Systems of Nonlinear Implicit Fractional Differential Equations

Zeeshan Ali, Akbar Zada, Kamal Shah · Bulletin of the Malaysian Mathematical Sciences Society · 2018 · 122 citations

, , +12

1–5 of 53

Authors

75

  1. DL
    Dima L. Shepelyansky

    Université Toulouse III - Paul Sabatier, France

    7 publications · 315 citations

    7

    h-index

  2. JM
    John Michael Rassias

    National and Kapodistrian University of Athens, Greece

    5 publications · 509 citations

    5

    h-index

  3. LE
    Leonardo Ermann

    Comisión Nacional de Energía Atómica, Argentina

    4 publications · 237 citations

    4

    h-index

  4. JW
    JinRong Wang

    Guizhou University, China

    4 publications · 602 citations

    4

    h-index

  5. DP
    Dorian Popa

    Technical University of Cluj-Napoca, Romania

    3 publications · 59 citations

    3

    h-index

1–5 of 75

Institutions

60

  1. Laboratoire de Physique Théorique

    Toulouse, France

    7 h-index

    12 publications

    592 citations

  2. Université Toulouse III - Paul Sabatier

    Toulouse, France

    7 h-index

    12 publications

    592 citations

  3. Institut de Recherche sur les Systèmes Atomiques et Moléculaires Complexes

    Toulouse, France

    6 h-index

    10 publications

    548 citations

  4. Université Fédérale de Toulouse Midi-Pyrénées

    Toulouse, France

    5 h-index

    8 publications

    246 citations

  5. Centre National de la Recherche Scientifique

    Paris, France

    4 h-index

    7 publications

    188 citations

  6. Guizhou University

    Guiyang, China

    4 h-index

    6 publications

    705 citations

  7. National and Kapodistrian University of Athens

    Athens, Greece

    3 h-index

    4 publications

    260 citations

  8. Université Djilali de Sidi Bel Abbès

    Sidi Bel Abbes, Algeria

    3 h-index

    4 publications

    120 citations

1–8 of 60

Venues

  1. 7

    h-index

  2. 4

    h-index

  3. American Mathematical Monthly

    2 publications · 36 citations

    2

    h-index

  4. Applied Mathematics Letters

    2 publications · 23 citations

    2

    h-index

  5. The European Physical Journal B

    2 publications · 83 citations

    2

    h-index

1–5