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» Expanders In Group Algebras
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TIT
2010
90views Education» more  TIT 2010»
14 years 6 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»
14 years 11 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
16 years 1 days 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»
14 years 11 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»
14 years 11 months ago
On the Hopf Algebraic Structure of Lie Group Integrators
Hans Z. Munthe-Kaas, Will M. Wright