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Turker Ozsari

Publications and source records attributed to Turker Ozsari.

3 recordsLinked to original sources

An elementary proof of the lack of null controllability for the heat equation on the half line

In this note, we give an elementary proof of the lack of null controllability for the heat equation on the half line by employing the machinery inherited by the unified transform, known also as the Fokas method. This approach also extends in a uniform way to higher dimensions and different initial-boundary value problems governed by the heat equation, suggesting a novel methodology for studying problems related to controllability.

math.OC

A Hash of Hash Functions

In this paper, we present a general review of hash functions in a cryptographic sense. We give special emphasis on some particular topics such as cipher block chaining message authentication code (CBC MAC) and its variants. This paper also broadens the information given in some well known surveys, by including more details on block-cipher based hash functions and security of different hash schemes.

cs.CR