K. G. Subramanian

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Harmonic functions have been of importance in the areas of applied mathematics, engineering, and many others. In this paper, a class of harmonic functions f(z) = h(z)+ g(z) that are harmonic univalent and sensepreserving in the unit disc, is introduced. The defining property of the class is based on a generalized fractional differential operator. Sufficient(More)
We consider array languages (sets of picturesconsisting of symbols placed in the lattice points of the 2D grid) and thepossibility to handle them with P systems. After proving binary normal formsfor array matrix grammars (which, even in the case when no appearance checking isused, are known to generate the array languages of arbitrary array grammars),(More)