formed contractually, signs in literature are often symbolic in nature. the poems and paintings of sohrab sepehri, the contemporary iranian poet and painter, are imbued with such signs which, if decoded, are rendered more tangible and more intelligible. sepehri’s signs have their origins in nature and hindu and buddhist mysticism. with his mystical intuition and platonic aesthetics, sepehri has...

The paper is a survey of notions and results related to classical and new generalizations of the notion of a periodic sequence. The topics related to almost periodicity in combinatorics on words, symbolic dynamics, expressibility in logical theories, algorithmic computability, Kolmogorov complexity, number theory, are discussed.

Given more than seven thousand years of urbanization and highly diverse topographic andgeographical conditions, Iran is one of the treasures through the world's architectural history. Climatic diversity,on the one hand, and long history of living, on the other hand, has led to noteworthy and valuable achievement inarchitecture and urbanization within this country. However, these elements are le...

In this paper‎, ‎we introduce a new class$T_{k}^{s,a}[A,B,alpha‎ ,‎beta ]$ of analytic functions by using a‎ ‎newly defined convolution operator‎. ‎This class contains many known classes of‎ ‎analytic and univalent functions as special cases‎. ‎We derived some‎ ‎interesting results including inclusion relationships‎, ‎a radius problem and‎ ‎sharp coefficient bound for this class‎.

The authors propose an improved decision-based detail-preserving variational method (DPVM) for removal of random-valued impulse noise. In the denoising scheme, adaptive centre weighted median filter (ACWMF) is first ameliorated by employing the variable window technique to improve its detection ability in highly corrupted images. Based on the improved ACWMF, a fast iteration strategy is used to...