Volume 86, Issue 1, February 2013

ISSN: 0037-1912 (Print) 1432-2137 (Online)

In this issue (19 articles)

  1. No Access

    RESEARCH ARTICLE

    Centralizers in the Full Transformation Semigroup

    João Araújo, Janusz Konieczny Pages 1-31
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  2. No Access

    RESEARCH ARTICLE

    Hecke-Kiselman monoids of small cardinality

    Riccardo Aragona, Alessandro D’Andrea Pages 32-40
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  3. No Access

    RESEARCH ARTICLE

    A semigroup approach to the Gnedenko system with single vacation of a repairman

    Abdukerim Haji, Agnes Radl Pages 41-58
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  4. No Access

    RESEARCH ARTICLE

    Generating sets of finite singular transformation semigroups

    Gonca Ayık, Hayrullah Ayık, Leyla Bugay, Osman Kelekci Pages 59-66
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  5. No Access

    RESEARCH ARTICLE

    Heat kernel estimates for an operator with unbounded diffusion coefficients in ℝ and ℝ2

    C. Spina Pages 67-82
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  6. RESEARCH ARTICLE

    On 2-absorbing commutative semigroups and their applications to rings

    A. Yousefian Darani, E. R. Puczyłowski Pages 83-91
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  7. No Access

    RESEARCH ARTICLE

    E ∨-unitary covers for ∨-semilatticed inverse semigroups

    A. Paula Garrão, Donald B. McAlister Pages 92-107
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  8. RESEARCH ARTICLE

    η-Simple semigroups without zero and η ∗-simple semigroups with a least non-zero idempotent

    Roman S. Gigoń Pages 108-113
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  9. No Access

    RESEARCH ARTICLE

    On Cayley graphs of semilattices of semigroups

    Behnam Khosravi, Bahman Khosravi Pages 114-132
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  10. No Access

    RESEARCH ARTICLE

    A mixed topology over the space of measures with continuous translations on a locally compact semigroup

    Saeid Maghsoudi Pages 133-139
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  11. No Access

    RESEARCH ARTICLE

    Symmetries on almost symmetric numerical semigroups

    Hirokatsu Nari Pages 140-154
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  12. No Access

    RESEARCH ARTICLE

    Epigroups whose subepigroup lattice is lower semimodular

    A. J. Ovsyannikov Pages 155-161
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  13. No Access

    RESEARCH ARTICLE

    Regular principal factors in free objects in Rees-Sushkevich varieties

    Norman R. Reilly Pages 162-182
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  14. No Access

    RESEARCH ARTICLE

    Modular translations of numerical semigroups

    Aureliano M. Robles-Pérez, José Carlos Rosales Pages 183-191
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  15. No Access

    RESEARCH ARTICLE

    On explicit representation and approximations of Dirichlet-to-Neumann semigroup

    H. Emamirad, M. Sharifitabar Pages 192-201
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  16. No Access

    RESEARCH ARTICLE

    Identities and quasiidentities in the lattice of overcommutative semigroup varieties

    V. Y. Shaprynski Pages 202-211
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  17. No Access

    RESEARCH ARTICLE

    Existence of a new limit variety of aperiodic monoids

    Wen Ting Zhang Pages 212-220
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  18. No Access

    SHORT NOTE

    A problem on generalized Cayley graphs of semigroups

    Shou-Feng Wang Pages 221-223
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  19. No Access

    SHORT NOTE

    A note on the computation of the Frobenius number of a numerical semigroup

    Julio José Moyano-Fernández Pages 224-227
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