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Localization dynamics in a binary two-dimensional cellular automaton: the Diffusion Rule
We study a two-dimensional cellular automaton (CA), called Diffusion Rule
(DR), which exhibits diffusion-like dynamics of propagating patterns. In
computational experiments we discover a wide range of mobile and stationary
localizations (gliders, oscillators, glider guns, puffer trains, etc), analyze
spatio-temporal dynamics of collisions between localizations, and discuss
possible applications in unconventional computing.Comment: Accepted to Journal of Cellular Automat
The genus and the category of configuration spaces
In this paper configuration spaces of smooth manifolds are considered. The
accent is made on actions of certain groups (mostly -tori) on this spaces by
permuting their points. For such spaces the cohomological index, the genus in
the sense of Krasnosel'skii-Schwarz, and the equivariant
Lyusternik-Schnirelmann category are estimated from below, and some corollaries
for functions on configuration spaces are deduced
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