Publications

(Entries on MathSciNet and zbMATH and arXiv)

1. E. Gardella, K. Kitamura, H. Thiel. Semiprime ideals in C*-algebras. J. Eur. Math. Soc. (JEMS) (to appear)
   arXiv: arXiv:2311.17480
2. H. Thiel. Real rank of some multiplier algebras. Isr. J. Math. (to appear)
   arXiv: arXiv:2402.01022
3. M. Brešar, E. Gardella, H. Thiel. Products of commutators in matrix rings. Can. Math. Bull. (to appear)
   DOI: 10.4153/S0008439524000523 arXiv: arXiv:2404.18116
4. A. Asadi-Vasfi, H. Thiel, E. Vilalta. Ranks of soft operators in nowhere scattered C*-algebras. J. Inst. Math. Jussieu (to appear)
   DOI: 10.1017/S1474748024000318 arXiv: arXiv:2310.00663
5. H. Thiel. Diffuse traces and Haar unitaries. Amer. J. Math. (to appear)
   arXiv: arXiv:2009.06940
6. E. Gardella, H. Thiel. Rings and C*-algebras generated by commutators. J. Algebra 662 (2025), 214-241.
   DOI: 10.1016/j.jalgebra.2024.08.020 arXiv: arXiv:2301.05958
7. E. Gardella, H. Thiel. Prime ideals in C*-algebras and applications to Lie theory. Proc. Amer. Math. Soc. 152 (2024), 3647-3656.
   DOI: 10.1090/proc/16808 arXiv: arXiv2306.16510
8. Y. Choi, E. Gardella, H. Thiel. Rigidity results for Lp-operator algebras and applications. Adv. Math. 452 (2024), Article No. 109747, 47 pages.
   DOI: 10.1016/j.aim.2024.109747 arXiv: arXiv:1909.03612
9. H. Thiel. Real rank of extensions of C*-algebras. Studia Math. 276 (2024), 131-155.
   DOI: 10.4064/sm231119-19-4 arXiv: arXiv:2311.03403
10. H. Thiel, E. Vilalta. Nowhere scattered C*-algebras. J. Noncommut. Geom. 18 (2024), 231-263.
    DOI: 10.4171/JNCG/526 arXiv: arXiv:2112.09877
11. R. Antoine, F. Perera, L. Robert, H. Thiel. Traces on ultrapowers of C*-algebras. J. Funct. Anal. 286 (2024), Article No. 110341, 65 pages.
    DOI: 10.1016/j.jfa.2024.110341 arXiv: arXiv:2303.01929
12. H. Thiel, E. Vilalta. Soft operators in C*-algebras. J. Math. Anal. Appl. 536 (2024), Article No. 128167, 35 pages.
    DOI: 10.1016/j.jmaa.2024.128167 arXiv: arXiv:2304.11644
13. H. Thiel. The generator rank of subhomogeneous C*-algebras. Canad. J. Math. 75 (2023), 1314-1342.
    DOI: 10.4153/S0008414X22000268 arXiv: arXiv:2006.03624
14. H. Thiel, E. Vilalta. The Global Glimm Property. Trans. Amer. Math. Soc. 376 (2023), 4713-4744.
    DOI: 10.1090/tran/8880 arXiv: arXiv:2204.13059
15. E. Gardella, H. Thiel. Zero-product balanced algebras. Lin. Alg. Appl. 670 (2023), 121-153.
    DOI: 10.1016/j.laa.2023.04.015 arXiv: arXiv:2210.07891
16. H. Thiel. Generators in Z-stable C*-algebras of real rank zero. J. Noncommut. Geom. 16 (2022), 1259-1281.
    DOI: 10.4171/JNCG/454 arXiv: arXiv:2006.08404
17. E. Gardella, H. Thiel. Isomorphisms of Algebras of Convolution Operators. Ann. Sci. Éc. Norm. Supér. (4) 55 (2022), 1433-1471.
    arXiv: arXiv:1809.01585
18. R. Antoine, F. Perera, L. Robert, H. Thiel. C*-algebras of stable rank one and their Cuntz semigroups. Duke Math. J. 171 (2022), 33-99.
    DOI: 10.1215/00127094-2021-0009 arXiv: arXiv:1809.03984
19. H. Thiel, E. Vilalta. Covering dimension of Cuntz semigroups. Adv. Math. 394 (2022), Article No. 08016, 44 pages.
    DOI: 10.1016/j.aim.2021.108016 arXiv: arXiv:2101.04522
20. H. Thiel, E. Vilalta. Covering dimension of Cuntz semigroups II. Int. J. Math. 32 (2021), Article No. 2150100, 27 pages.
    DOI: 10.1142/S0129167X21501007 arXiv: arXiv:2103.13062
21. R. Antoine, F. Perera, L. Robert, H. Thiel. Edwards‘ condition for quasitraces on C*-algebras. Proc. Roy. Soc. Edinburgh Sect. A 151 (2021), 525-547.
    DOI: 10.1017/prm.2020.26   arXiv: arXiv:1909.12787
22. H. Thiel. The generator rank of C*-algebras. J. Funct. Anal. 280 (2021), Article No. 108874, 34 pages.
    DOI: 10.1016/j.jfa.2020.108874   arXiv: arXiv:1210.6608
23. R. Antoine, F. Perera, H. Thiel. Cuntz semigroups of ultraproduct C*-algebras. J. Lond. Math. Soc. 102 (2020), 994-1029.
    DOI: 10.1112/jlms.12343   arXiv: arXiv:1905.03208
24. R. Antoine, F. Perera, H. Thiel. Abstract bivariant Cuntz semigroups. Int. Math. Res. Not. IMRN 2020, 5342-5386.
    DOI: 10.1093/imrn/rny143   arXiv: arXiv:1702.01588
25. E. Gardella, H. Thiel. Preduals and complementation of spaces of bounded linear operators. Int. J. Math. 31 (2020), Article No. 2050053, 26 pages.
    DOI: 10.1142/S0129167X20500536  arXiv: arXiv:1609.05326
26. H. Thiel. Ranks of operators in simple C*-algebras with stable rank one. Commun. Math. Phys. 377 (2020), 37-76.
    DOI: 10.1007/s00220-019-03491-8   arXiv: arXiv:1711.04721
27. E. Gardella, H. Thiel. Extending representations of Banach algebras to their biduals. Math. Z. 294 (2020), 1341-1354.
    DOI: 10.1007/s00209-019-02315-8   arXiv: arXiv:1703.00882
28. R. Antoine, F. Perera, H. Thiel. Abstract bivariant Cuntz semigroups. II. Forum Math. 32 (2020), 45-62.
    DOI: 10.1515/forum-2018-0285   arXiv: arXiv:1811.08689
29. H. Thiel. Inductive limits of projective C*-algebras. J. Noncommut. Geom. 13 (2019), 1435-1462.
    DOI: 10.4171/jncg/350   arXiv: arXiv:1105.1979
30. H. Thiel. Semiprojectivity and semiinjectivity in different categories. Publ. Mat. Urug. 17 (2019), 263-274.
    Journal Website   arXiv: arXiv:1802.05037
31. H. Thiel. Inductive limits of semiprojective C*-algebras. Adv. Math. 347 (2019), 597–618.
    DOI: 10.1016/j.aim.2019.02.030   arXiv: arXiv:1804.04908
32. E. Gardella, H. Thiel. Representations of p-convolution algebras on Lq-spaces. Trans. Amer. Math. Soc. 371 (2019), 2207-2236.
    DOI:10.1090/tran/7489   arXiv: arXiv:1609.08612
33. H. Thiel. Preduals for spaces of operators involving Hilbert spaces and trace-class operators. J. Math. Anal. Appl. 464 (2018), 1158-1166.
    DOI: 10.1016/j.jmaa.2018.04.051   arXiv: arXiv:1703.01169
34. R. Antoine, F. Perera, H. Thiel. Tensor products and regularity properties of Cuntz semigroups. Mem. Amer. Math. Soc. 251 (2018), no. 1199; 199 pages. DOI: 10.1090/memo/1199   arXiv: arXiv:1410.0483
35. E. Gardella, H. Thiel. Quotients of Banach algebras acting on Lp-spaces. Adv. Math. 296 (2016), 85-92.
    DOI: 10.1016/j.aim.2016.03.040   arXiv: arXiv:1412.3985
36. E. Gardella, H. Thiel. Group algebras acting on Lp-spaces. J. Fourier Anal. Appl. 21 (2015), 1310-1343.
    DOI: 10.1007/s00041-015-9406-1   arXiv: arXiv:1408.6136
37. E. Gardella, H. Thiel. Banach algebras generated by an invertible isometry of an Lp-space. J. Funct. Anal. 269 (2015), 1796-1839.
    DOI: 10.1016/j.jfa.2015.05.004   arXiv: arXiv:1405.5589
38. N. C. Phillips, A. P. W. Sørensen, H. Thiel. Semiprojectivity with and without a group action. J. Funct. Anal. 268 (2015), 929-973.
    DOI: 10.1016/j.jfa.2014.11.005   arXiv: arXiv:1403.3440
39. H. Thiel, W. Winter. The generator problem for Z-stable C*-algebras. Trans. Amer. Math. Soc. 366 (2014), 2327-2343.
    DOI: 10.1090/S0002-9947-2014-06013-3 &bnsp; arXiv: arXiv:1201.3879
40. H. Thiel. The topological dimension of type I C*-algebras. Operator Algebra and Dynamics. Springer Proceedings in Mathematics & Statistics Volume 58 (2013), 305-328.
    DOI: 10.1007/978-3-642-39459-1_16   arXiv: arXiv:1210.4314
41. A. P.W. Sørensen, H. Thiel. A characterization of semiprojectivity for commutative C*-algebras. Proc. Lond. Math. Soc. (3) 105 (2012), 1021-1046.
    DOI: 10.1112/plms/pdr051   arXiv: arXiv:1101.1856
42. E. Ortega, M. Rørdam, H. Thiel. The Cuntz semigroup and comparison of open projections. J. Funct. Anal. 260 (2011), 3474-3493.
    DOI: 10.1016/j.jfa.2011.02.017   arXiv: arXiv:1008.3497

Preprints

1. H. Thiel. Lie ideals in properly infinite C*-algebras. arXiv:2412.16087
2. E. Gardella, T.-K. Lee, H. Thiel. Fully noncentral Lie ideals and invariant additive subgroups in rings. arXiv:2409.03362
3. A. Austad, H. Thiel. The ideal separation property for reduced group C*-algebras. arXiv:2408.14880
4. U. Enstad, H. Thiel, E. Vilalta. Criteria for the existence of Schwartz Gabor frames over rational lattices. arXiv:2408.03423
5. R. Antoine, F. Perera, H. Thiel, E. Vilalta. Pure C*-algebras. arXiv:2406.11052
6. E. Gardella, H. Thiel. Weighted homomorphisms between C*-algebras. arXiv:2203.16702
7. E. Gardella, H. Thiel. Functoriality of group algebras acting on Lp-spaces. arXiv:1408.6137

Other Writing

1. C*-algebras of stable rank one and their Cuntz semigroups. Oberwolfach Extended Abstract for Conference „C*-Algebras“, 11. August – 17. August 2019.
2. Die Spur auf einem endlichen Faktor. Notizen zum Beweis der Existenz und Eindeutigkeit der Spur auf einem endlichen Faktor; Uni Münster, Sommersemester 2018.
3. The Cuntz semigroup. Lecture notes from a course at the University of Münster, winter semester 2016-17.
4. The generator rank for C-algebras. Oberwolfach Extended Abstract for Conference „C*-Algebras, Dynamics, and Classification“, 28. October – 3. November 2012.
5. A Survey on non-commutative Dimension theories. Notes from October 2011.
6. The connection between shape theory and E-theory. Notes for a talk given at the University of Copenhagen, 19. January 2011.
7. The Cuntz semigroup and its relation to classification. Notes from a course by Andrew Toms at the Master Class „Classification of C*-algebras“ in Copenhagen, November 2009.
8. One-dimensional C*-algebras and their K-theory. My diploma thesis at the university of Münster, August 2009, supervisor: Wilhelm Winter.
9. An Introduction to Hochschild and Cyclic homology. Term paper at UC Berkeley, Spring 2006.
10. The QR algorithm (and other methods to compute the eigenvalues of complex matrices). Term paper at University of Potsdam, 2005.