@misc{10481/77738, year = {2022}, month = {2}, url = {https://hdl.handle.net/10481/77738}, abstract = {Let S and Delta be numerical semigroups. A numerical semigroup S is an I(Delta)-semigroup if S \ {0} is an ideal of Delta. We denote by J (Delta) = {S vertical bar S is an I(Delta)-semigroupg, and we say that Delta is an ideal extension of S if S is an element of J (Delta). In this work, we present an algorithm to build all the ideal extensions of a numerical semigroup. We recursively denote by J(0) (N) = N; J(1)(N) = J (N) and J(k+1) (N) = J (J(k) (N)) for all k is an element of N: The complexity of a numerical semigroup S is the minimum of the set {k is an element of N vertical bar S is an element of J(k) (N)}. In addition, we introduce an algorithm to compute all the numerical semigroups with fixed multiplicity and complexity.}, organization = {Junta de Andalucia MTM2017-84890-P}, publisher = {Taylor & Francis}, keywords = {Numerical semigroup}, keywords = {Ideal}, keywords = {Extension}, keywords = {Complexity}, keywords = {I-chain}, keywords = {I-pertinent map}, title = {The complexity of a numerical semigroup}, doi = {10.2989/16073606.2022.2114391}, author = {García García, J. I. and Rosales González, José Carlos}, }