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20192026

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math.CO2026

How large can $B_{n}$ - and $D_{n}$ -friezes be?

Florian Ito Sprung

We pin down the largest entries possible in positive integral friezes of types $D_{n}$ for $n \geq 4$ and $B_{n}$ for $n \geq 2$ , addressing a conjecture of Robin Zhang. For type $D_{n}$ ,…

math.CO2026

A Log-Log Saving for Matrix-Algebra Length and Terseness

Florian Ito Sprung

Let $\ell(\Mat_n(F))$ denote the length of the full matrix algebra for a field $F$ , i.e. the largest of the least word length needed to span $\Mat_n(F)$, over all generating sets $…

How large can Bn​- and Dn​-friezes be?

A Log-Log Saving for Matrix-Algebra Length and Terseness

How large can $B_{n}$ - and $D_{n}$ -friezes be?