Editorial policy The journal Rendiconti dell’Istituto di Matematica dell’università di Trieste publishes original articles in all areas of mathematics. Special regard is given to research papers, but attractive expository papers may also be considered for publication. The journal usually appears in one issue per year. Additional issues may however be published. In particular, the Managing Editors may consider the publication of supplementary volumes related to some special events, like conferences, workshops, and advanced schools. All submitted papers will be refereed. Manuscripts are accepted for review with the understanding that the work has not been published before and is not under consideration for publication elsewhere. Our journal can be obtained by exchange agreements with other similar journals.

Instructions for Authors Authors are invited to submit their papers by e-mail directly to one of the Managing Editors in PDF format. All the correspondence regarding the submission and the editorial process of the paper are done by e-mail. Papers have to be written in one of the following languages: English, French, German, or Italian. Abstracts should not exceed ten printed lines, except for papers written in French, German, or Italian, for which an extended English summary is required. After acceptance, manuscripts have to be prepared in LaTeX using the style rendiconti.cls which can be downloaded from the web page. Any figure should be recorded in a single PDF, PS (PostScript), or EPS (Encapsulated PostScript) file.

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Now showing 1 - 5 of 19

Elementary operator-theoretic proof of Wienner's Tauberian Theorem
(Università degli Studi di Trieste. Dipartimento di Scienze Matematiche, 1996)
Van Neerven, J. M. A. M.
We present a short and elementary proof of Wiener's general Tauberian theorem based on the theory of one-parameter groups of operators.
1099 362
Carleman estimates and exact boundary controllabilty for a system of coupled non-conservative Schödinger Equations
(Università degli Studi di Trieste. Dipartimento di Scienze Matematiche, 1996)
Triggiani, Roberto
We consider a system of 2 (or more) coupled Schródinger equations in the difficult situation where the equations have first-order, lower-order terms, as well as first-order coupling in all space variables. By using a general differential multiplier we give a `friendly’ proof of earleman estimates. Under more restrictive intrinsic conditions mostly on the coupling operators, we obtain eaact controllability results for the coupled system, under various combinations of boundary controls: Dirichlet/Dirichlet; Dirichlet/Neumann; Neumann/Neumann. The controls are active on a suitable portion of the boundary. These results cannot be obtained by standard multipliers.
1217 728
On commutative sums of generators
(Università degli Studi di Trieste. Dipartimento di Scienze Matematiche, 1996)
Thieme, Horst R.
The theorem by Da Prato and Grisvard on resolvent commutative sums of linear m-dissipatine operators is recast and extended in the framework of integrated semigroups.
807 575
Hopf's Lemma and two dimensional domains with corners
(Università degli Studi di Trieste. Dipartimento di Scienze Matematiche, 1996)
Sweers, Guido
993 460
Well-Posedness of difference elliptic equation
(Università degli Studi di Trieste. Dipartimento di Scienze Matematiche, 1996)
Sobolevskii, Pavel E.
It is considered the difference analog of Poisson equation on the plane and it is established the exact with respect of step h coercive inequality in the $C^h$-norm for its solutions.
863 560

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