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duplicates list edited from Calculations after NumberForm [duplicate] to Why does MatrixForm affect calculations?, Calculations after NumberForm [duplicate]

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edited Feb 6, 2018 at 17:58

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Post Closed as "Duplicate" by m_goldberg, MarcoB, Feyre, vapor, corey979

Calculations after NumberForm [duplicate]

occurred Nov 24, 2016 at 21:59

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edited Nov 24, 2016 at 13:31

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Bug in Unexpected behavior from `NumberForm` of a matix

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edited Nov 24, 2016 at 12:13

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bugs number-representation

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asked Nov 24, 2016 at 12:09

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Bug in `NumberForm` of a matix

If I calculate the dimension of the matrix after NumberForm directly, then there will be something wrong

test = NumberForm[IdentityMatrix[2], 2];
test // Dimensions
(*output {2}, but {2,2} is expected*)

If I show the result of NumberForm and then calculate the dimension, the result is right

{{"1","0"},{"0","1"}} //Dimensions
(*ouput {2,2}*)

What causes this? Is it a bug?

bugs number-representation