Name of an operation

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If I have a vector $\vec a = [ a_1, a_2 ]$ and a vector $\vec b = [ b_1, b_2, b_3 ]$ What is the name of the operation, which produces a vector $\vec c = [ a_1b_1, a_1b_2, a_1b_3, a_2b_1, a_2b_2, a_2b_3 ]$ ?