Sökning: "galois"

Visar resultat 6 - 8 av 8 avhandlingar innehållade ordet galois.

1. 6. Stable reduction of curves and tame ramification

   Författare :Lars Halvard Halle; Carel Faber; Bas Edixhoven; KTH; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; MATHEMATICS; MATEMATIK;

   Sammanfattning : This thesis treats various aspects of stable reduction of curves, and consists of two separate papers. In Paper I of this thesis, we study stable reduction of curves in the case where a tamely ramified base extension is sufficient. LÄS MER

3. 7. Grothendieck Rings and Motivic Integration

   Författare :Karl Rökaeus; Torsten Ekedahl; Johannes Nicaise; Stockholms universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; MATHEMATICS; MATEMATIK; matematik; Mathematics;

   Sammanfattning : This thesis consists of three parts: In Part I we study the Burnside ring of the finite group G. This ring has a natural structure of a lambda-ring. However, a priori the images of the G-set S under the lambda-operations can only be computed recursively. LÄS MER

4. 8. Design and Implementation of Efficient and Secure Lightweight Cryptosystems

   Författare :Shohreh Sharif Mansouri; Elena Dubrova; Vincent Rijmen; KTH; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Electrical Engineering; Elektro- och systemteknik;

   Sammanfattning : In recent years there has been a wide-spread deployment of battery-powered and passive devices such as RFID tags, systems with very strong limitations on area, cost and power budgets. Deploying cryptographic solutions for these systems is both important, because it could unlock several security-critical applications, and challenging, due to the stringent budgets: the overheads of even the smallest block ciphers are often one or more orders of magnitude too high. LÄS MER