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Mathematics, 28.12.2019 03:31 safiyabrowne7286
Given an m x n array of real numbers. you may change the sign of all numbers in a row or of all numbers in a column. prove that by repeated changes you can obtain an array with all row and column sums non-negative.
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Given an m x n array of real numbers. you may change the sign of all numbers in a row or of all numb...
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