Scaling a Unitary Matrix
نویسندگان
چکیده
منابع مشابه
On the Pattern of a Unitary Matrix
Given a digraph D on n vertices, a matrix A of size n is said to have pattern D, if it has entry Aij 6= 0 if and only if (vi, vj) is an arc of D. We give a necessary condition, which is called strong quadrangularity, for a digraph to be the pattern of a unitary matrix. With the use of such a condition, we show that a line digraph L (D) is the pattern of a unitary matrix if and only if D is Eule...
متن کاملOn the Digraph of a Unitary Matrix
Given a matrix M of size n, the digraph D on n vertices is said to be the digraph of M , when Mij 6= 0 if and only if (vi, vj) is an arc of D. We give a necessary condition, called strong quadrangularity, for a digraph to be the digraph of a unitary matrix. With the use of such a condition, we show that a line digraph, − → L D, is the digraph of a unitary matrix if and only if D is Eulerian. It...
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KEY WORDS, SUBJECT CLASSIFICATION The manuscript must be accompanied by a brief abstract, no longer than 100-150 words. It should make minimal use of mathematical symbols and displayed formulas. Mathematics Subject Classification (2000) with primary (and secondary) subject classification codes and a list of 4-5 key words must be given.
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ژورنال
عنوان ژورنال: Open Systems & Information Dynamics
سال: 2014
ISSN: 1230-1612,1793-7191
DOI: 10.1142/s1230161214500139