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Featured researches published by Joachim Grollmann.


SIAM Journal on Computing | 1988

Complexity measures for public-key cryptosystems

Joachim Grollmann; Alan L. Selman

A general theory of public-key cryptography is developed that is based on the mathematical framework of complexity theory. Two related approaches are taken to the development of this theory, and th...


SIAM Journal on Computing | 1986

Relativizations of unambiguous and random polynomial time classes

John G. Geske; Joachim Grollmann

We study relationships between


GI - 19. Jahrestagung, I, Computergestützter Arbeitsplatz | 1989

Multi-Media-Dialog

Joachim Grollmann; Harald Höge; Franz Kapsner; Meinrad Niemöller; Christoph Rumpf; Werner Sammer

{\bf P}


Telekommunikation und multimediale Anwendungen der Informatik, GI - 21. Jahrestagung | 1991

Natürliche Sprache und Computer-Animation als Komponenten eines Multi-Media Systems

Ulrike Harke; Ulrich Leiner; Meinrad Niemöller; Klaus Zünkler; Joachim Grollmann

,


Archive | 1991

Kooperative Hypermedia-Systeme: Der Trend der 90er Jahre

Joachim Grollmann

NP


Archive | 1989

On the Software Structure of User Interface Management Systems

Johann Burgstaller; Joachim Grollmann; Franz Kapsner

, and the unambiguous and random time classes,


international conference on human computer interaction | 1989

A user interface management system for rapid prototyping and generation of dialog managers

Johann Burgstaller; Joachim Grollmann; Franz Kapsner

{\bf U}


ieee international conference on universal personal communications | 1993

Universal Personal Networking

Katrin Braun; Joachim Grollmann; Michael Horn; Hartmut Raffler; W. Thulke; Walter Weigel

, and


ifip congress | 1994

Personal communication is more than wireless communication

Katrin Braun; Joachim Grollmann; Michael Horn; Manfred Langen; W. Thulke; Walter Weigel

{\bf R}


ifip congress | 1994

Requirements of the Telecommunication Infrastructure of the Future: Multimedia Communication and Computing.

Katrin Braun; Joachim Grollmann

. Questions concerning these relationships are motivated by complexity issues in public-key cryptosystems. We prove that there exists a recursive oracle A such that

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