The Star of David Rule
نویسنده
چکیده
Abstract. In this note, a new concept called SDR-matrix is proposed, which is an infinite lower triangular matrix obeying the generalized rule of David star. Some basic properties of SDR-matrices are discussed and two conjectures on SDR-matrices are presented, one of which states that if a matrix is a SDR-matrix, then so is its matrix inverse (if exists).
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