Influence of calligraphy developments on inscription of Islamic buildings in Iran(Forth to ninth centuries AH)

Calligraphy and epigraphy each has his own evolution according their definitionand usage.`Solse` has been important inscription in epigraphy and calligraphy inIran.The evolution of ‘sols’ in calligraphy has very much affected on epigraphy. It seems that the most of these evolutions – for both of them- accured in forth toninth AH centuries.This article is about the evolution and development of Sols calligraphy and compareit with the evolution of Sols`s epigraphy from –fourth to ninth hijri centuries- inorder to understanding the rate of affection of calligraphy on epigraphy.