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MFCS
1998
Springer
15 years 9 months ago
One Guess One-Way Cellular Arrays
One-way cellular automata with restricted nondeterminism are investigated. The number of allowed nondeterministic state transitions is limited to a constant. It is shown that a lim...
Thomas Buchholz, Andreas Klein, Martin Kutrib
CCCG
2007
15 years 7 months ago
Restricted Edge Contractions in Triangulations of the Sphere with Boundary
Given a surface triangulation T of and a subset X of its vertex set V (T), we define a restricted edge contraction as a contraction of an edge connecting X and V (T)−X. Boundar...
Masaki Moriguchi, Kokichi Sugihara
DM
2010
144views more  DM 2010»
15 years 5 months ago
Balanced Cayley graphs and balanced planar graphs
A balanced graph is a bipartite graph with no induced circuit of length 2 (mod 4). These graphs arise in linear programming. We focus on graph-algebraic properties of balanced gra...
Joy Morris, Pablo Spiga, Kerri Webb
124
Voted
COMBINATORICS
2007
58views more  COMBINATORICS 2007»
15 years 5 months ago
The Initial Involution Patterns of Permutations
For a permutation π = π1π2 · · · πn ∈ Sn and a positive integer i ≤ n, we can view π1π2 · · · πi as an element of Si by order-preserving relabeling. The j-set of ...
Dongsu Kim, Jang Soo Kim
113
Voted
COMBINATORICS
1998
60views more  COMBINATORICS 1998»
15 years 5 months ago
Finite Vector Spaces and Certain Lattices
The Galois number Gn(q) is defined to be the number of subspaces of the n-dimensional vector space over the finite field GF(q). When q is prime, we prove that Gn(q) is equal to...
Thomas W. Cusick