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Research reports by Viking Högnäs

Here are the reports authored by Viking Högnäs. See the reports of all authors.

Helsinki University of Technology Institute of Mathematics Research Reports A

A437

Viking Högnäs

Nonnegative operators and the method of sums   [pdf][ps]

Received 2001-06-30 * the method of sums, maximal regularity, nonnegative operators, fractional powers of positive operators, fractional derivatives, fractional evolution equations, Hölder continuous functions

A421

Philippe Clément, Gustaf Gripenberg, Viking Högnäs, Stig-Olof Londen

Some remarks on the method of sums   [pdf][ps]

Received 1999-10-30 * Method of sums, maximal regularity, interpolation spaces * AMS 47A99, 47A10, 46B70