Claus Köstler

most citedA noncommutative de Finetti theorem: Invariance under quantum permutations is equivalent to freeness with amalgamation

81 citations · 99 across the 2 of their papers we have counts for

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math.OA2008★ 81 cited

A noncommutative de Finetti theorem: Invariance under quantum permutations is equivalent to freeness with amalgamation

Claus Köstler, Roland Speicher

We show that the classical de Finetti theorem has a canonical noncommutative counterpart if we strengthen `exchangeability' (i.e., invariance of the joint distribution of the rando…

math.OA2008★ 18 cited

Noncommutative independence from the braid group $B_{\infty}$

Rolf Gohm, Claus Köstler

We introduce `braidability' as a new symmetry for (infinite) sequences of noncommutative random variables related to representations of the braid group $B_{\infty}$ . It provides an e…

A noncommutative de Finetti theorem: Invariance under quantum permutations is equivalent to freeness with amalgamation

Noncommutative independence from the braid group B∞​

Noncommutative independence from the braid group $B_{\infty}$