Blurring of a photographic image by a wrong focus can be modeled by convolution. This paper discusses some points for the inverse operation with particular interest on the set of integers Z.

Contact details are reproduced from the original publication and may be historical.

Michel Valadier

IMAG, Université Montpellier II, Place Eugène Bataillon, 34095 Montpellier, France

mivaladier@wanadoo.fr

M. Valadier. “Does Deconvolution Exist?.” Journal of Convex Analysis 27 (2020), No. 2, 697–704.