Results 51 to 60 of about 3,332 (64)

A Note on the Transience of Critical Branching Random Walks on the Line [PDF]

open access: yesDiscrete Mathematics & Theoretical Computer Science, 2008
Gantert and Müller (2006) proved that a critical branching random walk (BRW) on the integer lattice is transient by analyzing this problem within the more general framework of branching Markov chains and making use of Lyapunov functions. The main purpose
Gerold Alsmeyer, Matthias Meiners
doaj   +1 more source

The structure of communication problems in cellular automata [PDF]

open access: yesDiscrete Mathematics & Theoretical Computer Science, 2011
Studying cellular automata with methods from communication complexity appears to be a promising approach. In the past, interesting connections between communication complexity and intrinsic universality in cellular automata were shown.
Raimundo Briceño   +1 more
doaj   +1 more source

Corners over quasirandom groups

open access: yes, 2016
Let $G$ be a finite $D$-quasirandom group and $A \subset G^{k}$ a $\delta$-dense subset. Then the density of the set of side lengths $g$ of corners \[ \{(a_{1},\dots,a_{k}),(ga_{1},a_{2},\dots,a_{k}),\dots,(ga_{1},\dots,ga_{k})\} \subset A \] converges ...
Zorin-Kranich, Pavel
core   +1 more source

A functional limit law for the profile of plane-oriented recursive trees. [PDF]

open access: yesDiscrete Mathematics & Theoretical Computer Science, 2008
We give a functional limit law for the normalized profile of random plane-oriented recursive trees. The proof uses martingale convergence theorems in discrete and continuous-time. This complements results of Hwang (2007).
Henning Sulzbach
doaj   +1 more source

NOCAS : A Nonlinear Cellular Automata Based Stream Cipher [PDF]

open access: yesDiscrete Mathematics & Theoretical Computer Science, 2011
LFSR and NFSR are the basic building blocks in almost all the state of the art stream ciphers like Trivium and Grain-128. However, a number of attacks are mounted on these type of ciphers.
Sandip Karmakar, Dipanwita Roy Chowdhury
doaj   +1 more source

On subshift presentations

open access: yes, 2015
We consider partitioned graphs, by which we mean finite strongly connected directed graphs with a partitioned edge set $ {\mathcal E} ={\mathcal E}^- \cup{\mathcal E}^+$. With additionally given a relation $\mathcal R$ between the edges in ${\mathcal E}^-
Béal   +9 more
core   +1 more source

Conservation Laws and Invariant Measures in Surjective Cellular Automata [PDF]

open access: yesDiscrete Mathematics & Theoretical Computer Science, 2011
We discuss a close link between two seemingly different topics studied in the cellular automata literature: additive conservation laws and invariant probability measures.
Jarkko Kari, Siamak Taati
doaj   +1 more source

Fractal diffusion coefficient from dynamical zeta functions

open access: yes, 2005
Dynamical zeta functions provide a powerful method to analyze low dimensional dynamical systems when the underlying symbolic dynamics is under control.
Artuso R   +11 more
core   +1 more source

Projective subdynamics and universal shifts [PDF]

open access: yesDiscrete Mathematics & Theoretical Computer Science, 2011
We study the projective subdynamics of two-dimensional shifts of finite type, which is the set of one-dimensional configurations that appear as columns in them.
Pierre Guillon
doaj   +1 more source

Selfsimilarity, Simulation and Spacetime Symmetries [PDF]

open access: yesDiscrete Mathematics & Theoretical Computer Science, 2011
We study intrinsic simulations between cellular automata and introduce a new necessary condition for a CA to simulate another one. Although expressed for general CA, this condition is targeted towards surjective CA and especially linear ones.
Vincent Nesme, Guillaume Theyssier
doaj   +1 more source

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