We investigate the field theory of strings having as a target space an arbitrary discrete onedimensional manifold. The existence of the continuum limit is guaranteed if the target space is a Dynkin diagram of a simply laced Lie algebra or its affine extension. In this case the theory can be mapped onto the theory of strings embedded in the infinite discrete line ZZ which is the target space of ...

A discrete alternative to scale space filtering is presented. The new method provides for fast solutions to problems of spatial containment, filtering and matching, without using arbitrary parameters and smoothing of the input. The discrete space-scale representation is a hierarchical perceptual organization that has concrete applications in computer vision research. Examples of actual implemen...

This paper is intended to be a continuation of Habets and van Schuppen [2004] and Habets et al. [2006], which address the control problem for piecewise-affine systems on an arbitrary polytope or a family of these. Our work deals with the underlying combinatorics of the underlying discrete system. Motivated by Forman [1998], on the triangulated state space we define a combinatorial vector field,...

A memory control for T-S fuzzy discrete-time systems with sto- chastic input delay is proposed in this paper. Dierent from the common assumptions on the time delay in the existing literatures, it is assumed in this paper that the delays vary randomly and satisfy some probabilistic dis- tribution. A new state space model of the discrete-time T-S fuzzy system is derived by introducing some stocha...

onsi al-haj tended surrealism in the beginning of his poetic life. his surrealistic poems have been told according to the unconsciousness and automatic writing .  so his poems are written with a unconscious style of writing. trusting on unconsciousness by onsi al-haj has influenced on his poems in some aspects. one of these aspects is his language; al-haj's language is an ambiguous languag...