Volume 1, Issue 4 J. C. Rosales Contractions of a numerical semigroup Downloads Abstract PDF Full article PDF DOI { copied = true; setTimeout(() => copied = false, 2000) })" :aria-label="copied ? 'DOI copied' : 'Copy DOI'" :title="copied ? 'Copied' : 'Copy DOI'" > Find all available articles from these authors J. C. Rosales Find more articles with the same keywords numerical semigroup symmetric pseudo-symmetric modular Diophantine inequality Frobenius number singularity degree Find more articles with the same subject classes 20M14 13H1