Analysis of The Relationship Between Theoretical Aesthetic Ideas And Modern- Postmodern Architectural Styles; (A Comparative Study Of Modern And Postmodern Architecture)ِِِ

Physical attributes have always been a qualitative indicator for evaluating an architectural work. These character influenced by function, technology and changing the process of creation and perception of beauty in modern times; and influenced by content, culture, history, meaning and symbolic linguistic structures in the postmodern era. In accordance with the evolution of aesthetic theories since the early twentieth century, several styles in architecture have rapidly replaced each other, in which aesthetic information and semantic information have different proportions. The purpose of this study is to recognize the evolution of aesthetic ideas from the twentieth century and to explore the relationship between these ideas and the architectural style changes of this period. The main question is how the developments of modern and postmodern aesthetic theories have influenced the stylistic developments of this period? So in this qualitative research, modeling in this field has been done through logical reasoning and a comparative study was done. The results show that the main point is the change of formal approach to semantic approach in aesthetics, from modern to postmodern, which is also evident in the architecture of this period. Among this spectrum, three factors of function, technology and culture have played a significant role in changing the aesthetic structures of architectural styles