Title THE SCHUR DECOMPOSITION OF DISCRETE SINE AND COSINE TRANSFORMS OF TYPE I Type Presentation Keywords Schur decomposition, Eigenvalue decomposition, Discrete Fourier transform, Discrete trigonometric trans Abstract By using linearly algebraic tools, some Schur decompositions of the discrete sine and cosine transforms of type I are given. Researchers fatemeh zarei (First researcher) , Taher Yazdanpanah (Second researcher) , Ali Bagheri-Bardi (Third researcher) , Milos Dakovic (Fourth researcher) , Ljubiša Stanković (Fifth researcher)