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suppose i run Two notebook and in each of them i have matrix A and Constant B and a function C

in each notebook these things have the same name.

if in notebook 1 i assign B=10 then in notebook 2 B is 10 too , which is not my desire.

how can i define these constants and matrices and functions so that they are not affect each other in each notebook.

i do not want to rename one of these entities.

thanks

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# How to define local variables and constants in mathematica

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