Is the symbol underscore forbidden in the name of a matrix?

sergiomanzetti · May 19, 2021, 4:21pm

Hi, I named a matrix A_n and got a series of values for it.

Then I named the same matrix by An and I got a series of different results for it.

What is happening?

Thanks!

rohitnamjoshi · May 19, 2021, 4:50pm

Underscore is Blank so A_n is interpreted as a Pattern

A_n // FullForm
(* Pattern[A, Blank[n]] *)

sergiomanzetti · May 19, 2021, 4:51pm

Thanks Rohit, that was clear.

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