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math.FA2016
Extension operators for smooth functions on compact subsets of the reals
Leonhard Frerick, Enrique Jorda, Jochen Wengenroth
We introduce sufficient as well as necessary conditions for a compact set such that there is a continuous linear extension operator from the space of restrictions $C^\infty(K)=…
math.FA2016
Diametral dimensions of Frechet spaces
Loic Demeulenaere, Leonhard Frerick, Jochen Wengenroth
The diametral dimension is an important topological invariant in the category of Frechet spaces which has been used, e.g., to distinguish types of Stein manifolds. We introduce var…