0

the reader as one of the three angles of literary criticism triangle besides its two other angles i.e. the writer and literary work is considered as one of the effective factors in studying a  literary work in critical circles. some critics call him consumer on the one hand and producer on the other hand because of his interpretations and perceptions. accordingly, literary works are divided int...

cospectrality of two graphs measures the differences between the ordered spectrum of these graphs in various ways. actually,the origin of this concept came back to richard brualdi's problems that are proposed in cite{braldi}:let $g_n$ and $g'_n$ be two nonisomorphic simple graphs on $n$ vertices with spectra$$lambda_1 geq lambda_2 geq cdots geq lambda_n ;;;text{and};;; lambda'_1 geq lambda'_2 g...