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» A chain theorem for matroids
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ENDM
2008
80views more  ENDM 2008»
13 years 7 months ago
Polytopal complexes: maps, chain complexes and... necklaces
The notion of polytopal map between two polytopal complexes is defined. Surprisingly, this definition is quite simple and extends naturally those of simplicial and cubical maps. It...
Frédéric Meunier
CORR
2008
Springer
58views Education» more  CORR 2008»
13 years 7 months ago
On Ritt's decomposition Theorem in the case of finite fields
11 A classical theorem by Ritt states that all the complete decomposition chains of a univariate polynomial satisfying a certain tameness condition have the same length. In this p...
Jaime Gutierrez, David Sevilla
SIAMCOMP
2002
95views more  SIAMCOMP 2002»
13 years 7 months ago
Lower Bounds for Lucas Chains
Lucas chains are a special type of addition chains satisfying an extra condition: for the representation ak = aj + ai of each element ak in the chain, the difference aj - ai must a...
Martin Kutz
SODA
2004
ACM
104views Algorithms» more  SODA 2004»
13 years 8 months ago
Variable length path coupling
We present a new technique for constructing and analyzing couplings to bound the convergence rate of finite Markov chains. Our main theorem is a generalization of the path couplin...
Thomas P. Hayes, Eric Vigoda
AIED
2005
Springer
14 years 26 days ago
Advanced Geometry Tutor: An intelligent tutor that teaches proof-writing with construction
: Two problem solving strategies, forward chaining and backward chaining, were compared to see how they affect students’ learning of geometry theorem proving with construction. I...
Noboru Matsuda, Kurt VanLehn