Abstract
We explore special features of the pair (U ∗,U ∗) formed by the right and left dual over a (left) bialgebroid U in case the bialgebroid is, in particular, a left Hopf algebroid. It turns out that there exists a bialgebroid morphism S ∗ from one dual to another that extends the construction of the antipode on the dual of a Hopf algebra, and which is an isomorphism if U is both a left and right Hopf algebroid. This structure is derived from Phùng’s categorical equivalence between left and right comodules over U without the need of a (Hopf algebroid) antipode, a result which we review and extend. In the applications, we illustrate the difference between this construction and those involving antipodes and also deal with dualising modules and their quantisations.
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Anderson, F., Fuller, K.: Rings and Categories of Modules. 2nd edn., Graduate Texts in Mathematics, vol. 13. Springer, New York (1992)
Beck, J.: Distributive Laws Sem.on Triples and Categorical Homology Theory (ETH, Zürich, 1966/67), pp. 119–140. Springer, Berlin (1969)
Böhm, G.: Hopf algebroids. In: Handbook of Algebra, vol. 6, pp. 173–236. North-Holland, Amsterdam (2009)
Böhm, G., Szlachányi, K.: Hopf algebroids with bijective antipodes: axioms, integrals, and duals. J. Algebra 274(2), 708–750 (2004)
Borel, A., Grivel, P.-P., Kaup, B., Haefliger, A., Malgrange, B., Ehlers, F.: Algebraic D-modules. Perspectives in Mathematics, vol. 2. Academic, Boston (1987)
Calaque, D., Van den Bergh, M.: Hochschild cohomology and Atiyah classes. Adv. Math. 224, 1839–1889 (2010)
Cartier, P.: Cohomologie des coalgèbres, exposés 4, 5, Séminaire Sophus Lie, tome 2 (1955–1956) Faculté des Sciences de Paris (1957)
Chemla, S.: Poincaré duality for k-A Lie superalgebras. Bull. Soc. Math. France 122(3), 371–397 (1994)
Chemla, S.: Duality properties for quantum groups. Pacific J. Math. 252(2), 313–341 (2011) (a more detailed version is available at arXiv:0911.2860)
Chemla, S.: Rigid dualizing complex for quantum enveloping algebras and algebras of generalized differential operators. J. Algebra 276, 80–102 (2004)
Chemla, S., Gavarini, F.: Duality functors for quantum groupoids. J. Noncomm. Geom. 9(2), 287–358 (2015)
Huebschmann, J.: Duality for Lie-Rinehart algebras and the modular class. J. Reine Angew. Math. 510, 103–159 (1999)
Kadison, L., Szlachányi, K.: Bialgebroid actions on depth two extensions and duality. Adv. Math. 179(1), 75–121 (2003)
Kashiwara, M.: D-Modules and Microlocal Calculus. Translations of Mathematical Monographs, vol. 217. American Mathematical Society, Providence (2003)
Kowalzig, N.: Hopf algebroids and their cyclic theory. Ph.D. thesis Universiteit Utrecht and Universiteit van Amsterdam (2009)
Kowalzig, N., Krähmer, U.: Duality and products in algebraic (co)homology theories. J. Algebra 323(7), 2063–2081 (2010)
Kowalzig, N., Posthuma, H.: The cyclic theory of Hopf algebroids. J. Noncomm. Geom. 5(3), 423–476 (2011)
Phùng, H.H.: Tannaka-Krein duality for Hopf algebroids. Israel J. Math. 167, 193–225 (2008)
Rinehart, G.: Differential forms on general commutative algebras. Trans. Amer. Math. Soc. 108, 195–222 (1963)
Rotman, J.: An Introduction to Homological Algebra. 2nd edn. Universitext, Springer, New York (2009)
Schauenburg, P.: Duals and doubles of quantum groupoids (× R -Hopf algebras) New trends in Hopf algebra theory (La Falda, 1999), Contemp. Math, Amer. Math. Soc., Providence, vol. 267, pp. 273–299 (2000)
Schauenburg, P.: The dual and the double of a Hopf algebroid are Hopf algebroids. arXiv:1504.05057 (2015)
Schneiders, J.-P.: An introduction to \(\mathcal {D}\)-modules. Bull. Soc. Roy. Sci. Liège 63(3–4), 223–295 (1994). Algebraic Analysis Meeting (Liège, 1993)
Sweedler, M.: Hopf Algebras. Mathematics Lecture Note Series. W. A. Benjamin, New York (1969)
Takeuchi, M.: Groups of algebras over \(A\otimes \overline {A}\). J. Math. Soc. Japan 29(3), 459–492 (1977)
Xu, P.: Quantum groupoids. Comm. Math. Phys. 216(3), 539–581 (2001)
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Presented by Susan Montgomery.
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Chemla, S., Gavarini, F. & Kowalzig, N. Duality Features of Left Hopf Algebroids. Algebr Represent Theor 19, 913–941 (2016). https://doi.org/10.1007/s10468-016-9604-9
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DOI: https://doi.org/10.1007/s10468-016-9604-9