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My question is bit more mathematical then algorithmic.

Let's say I have 4x4 natural numbers matrix (including 0), is there any inverted matrix which also contains only natural numbers to it?

Thanks for any help give. Shahar

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    You could try on math.stackexchange.2012-07-27
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    Most natural number matrices either are not invertible or have an inverse containing negative numbers or fractions. The identity matrix however contains only natural numbers and zeros, and so does its inverse ;-).2012-07-27

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