Why do I get a set with repeated elements?

Question:Why do I get a set with repeated elements?

Posted: rstan23 15 Product: Maple

June 11 2025

When I load LinearAlgebra and give the command

{Matrix([1])} union {Matrix([1])};

I receive a set with two elements, each equal to the matrix [1]. Why does this happen? How can I eliminate this duplicate element?

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