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Question: How to define the smitform of a matrix over finite fields

Question:How to define the smitform of a matrix over finite fields

Magma 70 Maple 15
linearalgebra finite-field smith-form
January 27 2019
0

Suppose that A is an nxn matrix over the finite field Z:=GF(2,q) for some q. I wan to get the smitform of A over Z. First I used the package  

with(LinearAlgebra[Generic]) 

and after that I applied the command 

S := SmithForm[Z](A)

but the mentioned command made some errors. In fact, I do not how to define commands igcdex, iquo, irem, sign and abs for SmithForm over finite fields.

Thanks for any suggestions 
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