Paracommutators - brief introduction, open problems
نویسندگان
چکیده
منابع مشابه
Open problems for equienergetic graphs
The energy of a graph is equal to the sum of the absolute values of its eigenvalues. Two graphs of the same order are said to be equienergetic if their energies are equal. We point out the following two open problems for equienergetic graphs. (1) Although it is known that there are numerous pairs of equienergetic, non-cospectral trees, it is not known how to systematically construct any such pa...
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ژورنال
عنوان ژورنال: Revista Matemática Complutense
سال: 1989
ISSN: 1988-2807,1139-1138
DOI: 10.5209/rev_rema.1989.v2.18104