Defines Terracini unions of matroids that capture when the algebraic matroid of a join coincides with the matroid union of its summands, motivated by Terracini's lemma, with applications to toric surfaces and threefolds.
Representation of matroids
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Terracini matroids: algebraic matroids of secants and embedded joins
Defines Terracini unions of matroids that capture when the algebraic matroid of a join coincides with the matroid union of its summands, motivated by Terracini's lemma, with applications to toric surfaces and threefolds.