Klimek, SlawomirMcBride, MattRathnayake, SumedhaSakai, KaoruWang, Honglin2018-04-122018-04-122017Klimek, S., McBride, M., Rathnayake, S., Sakai, K., & Wang, H. (2017). Derivations and spectral triples on quantum domains I: Quantum disk. Symmetry, Integrability and Geometry: Methods and Applications (SIGMA), 13. https://doi.org/10.3842/SIGMA.2017.075https://hdl.handle.net/1805/15848We study unbounded invariant and covariant derivations on the quantum disk. In particular we answer the question whether such derivations come from operators with compact parametrices and thus can be used to define spectral triples.enPublisher Policyinvariant and covariant derivationsspectral triplequantum diskArticle