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» Expanders In Group Algebras
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TIT
2010
90views Education» more  TIT 2010»
13 years 2 months ago
Group codes outperform binary-coset codes on nonbinary symmetric memoryless channels
Typical minimum distances and error exponents are analyzed on the 8-PSK Gaussian channel for two capacityachieving code ensembles with different algebraic structure. It is proved t...
Giacomo Como
MOC
2000
145views more  MOC 2000»
13 years 7 months ago
Approximating the exponential from a Lie algebra to a Lie group
Consider a differential equation y = A(t, y)y, y(0) = y0 with y0 G and A : R+
Elena Celledoni, Arieh Iserles
ICALP
2009
Springer
14 years 7 months ago
Limits and Applications of Group Algebras for Parameterized Problems
The algebraic framework introduced in [Koutis, Proc. of the 35th ICALP 2008] reduces several combinatorial problems in parameterized complexity to the problem of detecting multili...
Ioannis Koutis, Ryan Williams
JSC
2002
68views more  JSC 2002»
13 years 7 months ago
Orbit-stabilizer Problems and Computing Normalizers for Polycyclic Groups
, Allen C.) see Innovations in teaching abstract algebra, 2003b:00019 Littlewood, D. E. The skeleton key of mathematics. (English summary) 2003j:01046 Magnin, Louis Quelques questi...
Bettina Eick
FOCM
2008
73views more  FOCM 2008»
13 years 7 months ago
On the Hopf Algebraic Structure of Lie Group Integrators
Hans Z. Munthe-Kaas, Will M. Wright