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One half of a pseudo-symmetric numerical semigroup |
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| Authors: | Rosales J C |
| Institution: | Departamento de Álgebra Universidad de Granada E-18071 Granada Spain |
| Abstract: | We prove that a numerical semigroup is irreducible if and onlyif it is one half of a pseudo-symmetric numerical semigroup.As a consequence we find that every numerical semigroup canbe obtained by dividing a pseudo-symmetric numerical semigroupby 4. |
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