The interior spaces that depend on their functional activities often evoke diverse receiving impressions that are embodied in different responses according to what the vocabulary and design elements emit according to the contradictory mechanisms of foundations and principles, as in the subject of amplification and reduction, and every duality is implicit in the meaning of these contradictions that enhance the sense of the luxury of the place and affect the use towards The optimal and appropriate performance, especially in the space of the public court hearings. On the other hand, the motives for the function of the interior space call for this design character when it requires a sense of the awe of the place and its activities, through regular geometric shapes abstracted from plankton of sense, addressing the imagination of the recipient with its physical and intellectual framework when imagination takes them To meditate on the interpretation of the luxury of forms borrowed from ancient architecture with a metaphysical tendency. Accordingly, the researcher finds the need to address this study and explore its origins and references, in order to be able to agree between the contradictions within the framework of a common field. Therefore, the researcher presents the problem of his research in the following question: How can a contradictory duality be used, such as amplification and reduction, to express the function of major internal spaces, while the thesis aimed at: First Finding contradictory conventions within the data of amplification and reduction that present design mechanisms with regular rhythms that call for everything that represents a sense of luxury, discipline and justice, and second: identifying the functional motives achieved by the expressive side in the elements of forms provided by both amplification and reduction within one design system, and the research reached results The most important of them: 1- The first model appeared in a modernist character away from stereotypes, so simplicity appeared in reducing the space of the interior space, the furnishing elements and the secondary ceiling in a circular shape. 2- The secondary ceiling and the industrial lighting units in the first model were characterized by a somewhat complex organization and cylindrical geometric formations, in contrast to the designer, the curves of their circular shapes in Floor tile inscriptions also appeared, while in the second model appeared square formations that harmonized with the shape and size of the interior space, The most important conclusions are: 1- Reducing the meaning of the identity of the place through geometric shapes with complex inscriptions and a civilizational allegorical character is of great importance to the societal and ideological feeling as expressive elements that enhance functional privacy that often calls for one common performance, values and belonging to unite the group,2-The role of amplification and reduction in expressing the function of the inner space comes from the quantities of the first and the
qualities of the second, the optimal use depends on the correct reception.
Keywords: Amplification, Reduction, Interior Spaces.