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| Estimations of upper bounds of |Af _1iVL |
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YU Juan
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(College of Maik^matics and Computational Sciences in China University of Petroleum t Dongying 257061，Shandong Province t China )
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| Abstract: |
| For the strictly cJoubly diagonaljy dominant matrix M, a new upper Jxiund of maximum absoliite row sura iKjnn for M']N was obtained. This bound generalizes and improves many known results. Numerical examples were supplemented to iliustrate the effectivenees ctf the upper bound |
| Key words: doubly difl oimlly dominant matrin maximum absolute rqw sum norm upper bound |
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