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From some matrix operations I get "AlgebraicNumber[-4 I, {0, -(1/16)}]" as output.

I need to get i/4 and I don't know how. If I write "N[AlgebraicNumber[-4 I, {0, -(1/16)}]]",

I get 0. + 0.25 i but it is not what I want neither. I would like to get just i/4 as output.

Can anybody help?

Thank you in advance.

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# AlgebraicNumber to simple number in Mathematica

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