On Yoshinaga's arrangement of lines and the containment problem
classification
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arrangementlinesyoshinagacontainmentdoubleexamplesharbournehaving
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The main purpose of the note is to show that Yoshinaga's arrangement of $18$ lines having $48$ triple and $9$ double intersection points leads to a new (short) series of non-containment examples for $I^{(3)} \subset I^{2}$, the question studied by Harbourne and Huneke.
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