Friedrich Littmann

activity

20102026

most citedGaussian Subordination for the Beurling-Selberg Extremal Problem

42 citations · 148 across the 13 of their papers we have counts for

collaborators

Showing 2013 · math.CAShow all

2 papers · 2 filters

math.CA2013★ 10 cited

Extremal functions with vanishing condition

Friedrich Littmann, Mark Spanier

We determine the optimal majorant $M^{+}$ and minorant $M^{-}$ of exponential type for the truncation of $x \mapsto (x^{2} + a^{2})^{- 1}$ with respect to general de Branges measures. We prove…

math.CA2013★ 8 cited

Entire approximations for a class of truncated and odd functions

Emanuel Carneiro, Friedrich Littmann

We solve the problem of finding optimal entire approximations of prescribed exponential type (unrestricted, majorant and minorant) for a class of truncated and odd functions with a…