English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

For odd n, I write down tensors in C^n\otimes C^n\otimes C^n of border rank2n-1, showing the non-triviality of the Young-flattening equations ofLandsberg-Ottaviani. I also study the border rank of the tensors of Alexeev et.al., showing the tensors their tensors T_{2^k}, despite having rank equal to2^{k+1}-1, have border rank equal to 2^k, the minimum of any concise tensor. Ialso study the equations of Griesser.

Explicit tensors of border rank at least 2n-1