We establish necessary conditions for a general inclusion theorem involving a pair of doubly triangular matrices. As corollaries we obtain inclusion results for some special classes of doubly triangular matrices.
АНАТОЛИЙ КУКЛИН(2007)。Jubilej L. P. Vasikovoj (L. P. Vasikova 80)。Linguistica Uralica,43(4),310-312。https://www.airitilibrary.com/Article/Detail?DocID=17367506-200712-201011030008-201011030008-310-312