Commutative adapted measured quantum groupoid reconstruction conjecture

Let (N,M,α,β,Γ,μ,TL,TR)(N,M,\alpha,\beta,\Gamma,\mu,T_L,T_R) be an adapted measured quantum groupoid, meaning a measured quantum groupoid with the stated adaptedness property, and suppose that MM is commutative. Then the commutative reconstruction conjecture. There exists a locally compact groupoid GG such that

(N,M,α,β,Γ,μ,TL,TR)(L(G{0},μ),L(G,ν),α,β,ΓG,μ,PG,jGPGjG).(N,M,\alpha,\beta,\Gamma,\mu,T_L,T_R)\simeq (L^{\infty}(G^{\{0\}},\mu),L^{\infty}(G,\nu),\alpha,\beta,\Gamma_G,\mu,P_G,j_G\circ P_G\circ j_G).

This asserts that every adapted measured quantum groupoid with commutative von Neumann algebra MM arises from a locally compact groupoid. The supplied text gives no resolution status for the claim.

Sources & referencesView supporting material

Primary source

Franck Lesieur, “Measured quantum groupoids”, arXiv:math/0504104 (2007).

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