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Approximation of sgn $$(x)$$ ( x ) on Two Symmetric Intervals by Rational Functions with Fixed Poles

Crossref DOI link: https://doi.org/10.1007/s40315-015-0119-x

Published Online: 2015-05-15

Published Print: 2015-12

Update policy: https://doi.org/10.1007/springer_crossmark_policy