Unitary easy quantum groups: geometric aspects

Abstract

We discuss the classification problem for the unitary easy quantum groups, under strong axioms, of noncommutative geometric nature. Our main results concern the intermediate easy quantum groups $O_N\subset G\subset U_N^{+}$. To any such quantum group we associate its Schur-Weyl twist $\bar{G}$, two noncommutative spheres $S,\bar{S}$, a noncommutative torus $T$, and a quantum reflection group $K$. Studying $(S,\bar{S},T,K,G,\bar{G})$ leads then to some natural axioms, which can be used in order to investigate $G$ itself. We prove that the main examples are covered by our formalism, and we conjecture that in what concerns the case $U_N\subset G\subset U_N^{+}$, our axioms should restrict the list of known examples.

30 pages

References in corpus (3)

• Woronowicz's Tannaka-Krein duality and free orthogonal quantum groups
• Matrix models for noncommutative algebraic manifolds
• Quantum groups based on spatial partitions

Cited by in corpus (3)

• Categories of Two-Colored Pair Partitions, Part II: Categories Indexed by Semigroups
• Homogeneous quantum groups and their easiness level
• Unitary quantum groups vs quantum reflection groups