Universität zu Köln

2021

Geiges, Hansjoerg and Lange, Christian (2021). Seifert fibrations of lens spaces (vol 88, pg 1, 2018). Abh. Math. Semin. Univ. Hamburg, 91 (1). S. 145 - 151. HEIDELBERG: SPRINGER HEIDELBERG. ISSN 1865-8784

2020

Asselle, Luca and Lange, Christian (2020). On the rigidity of Zoll magnetic systems on surfaces. Nonlinearity, 33 (7). S. 3173 - 3195. BRISTOL: IOP PUBLISHING LTD. ISSN 1361-6544

Lange, Christian (2020). On metrics on 2-orbifolds all of whose geodesics are closed. J. Reine Angew. Math., 758. S. 67 - 95. BERLIN: WALTER DE GRUYTER GMBH. ISSN 1435-5345

Lange, Christian (2020). Orbifolds from a metric viewpoint. Geod. Dedic., 209 (1). S. 43 - 58. DORDRECHT: SPRINGER. ISSN 1572-9168

2019

Frauenfelder, Urs, Lange, Christian and Suhr, Stefan (2019). A HAMILTONIAN VERSION OF A RESULT OF GROMOLL AND GROVE. Ann. Inst. Fourier, 69 (1). S. 409 - 420. ST MARTIN D HERES CEDEX: ANNALES INST FOURIER. ISSN 1777-5310

Lange, Christian (2019). WHEN IS THE UNDERLYING SPACE OF AN ORBIFOLD A MANIFOLD? Trans. Am. Math. Soc., 372 (4). S. 2799 - 2829. PROVIDENCE: AMER MATHEMATICAL SOC. ISSN 1088-6850

2018

Geiges, Hansjoerg and Lange, Christian (2018). Seifert fibrations of lens spaces. Abh. Math. Semin. Univ. Hamburg, 88 (1). S. 1 - 23. HEIDELBERG: SPRINGER HEIDELBERG. ISSN 1865-8784

Lange, Christian (2018). Equivariant smoothing of piecewise linear manifolds. Math. Proc. Camb. Philos. Soc., 164 (2). S. 369 - 381. NEW YORK: CAMBRIDGE UNIV PRESS. ISSN 1469-8064

Lange, Christian (2018). ON THE EXISTENCE OF CLOSED GEODESICS ON 2-ORBIFOLDS. Pac. J. Math., 294 (2). S. 453 - 473. BERKELEY: PACIFIC JOURNAL MATHEMATICS. ISSN 0030-8730

Lange, Christian and Stadler, Stephan (2018). Affine functions on Alexandrov spaces. Math. Z., 289 (1-2). S. 455 - 470. HEIDELBERG: SPRINGER HEIDELBERG. ISSN 1432-1823

2016

Lange, Christian (2016). Characterization of finite groups generated by reflections and rotations. J. Topol., 9 (4). S. 1109 - 1130. HOBOKEN: WILEY. ISSN 1753-8424

Lange, Christian (2016). Some results on orbifold quotients and related objects. PhD thesis, Universität zu Köln.

Lange, Christian and Mikhailova, Marina A. (2016). CLASSIFICATION OF FINITE GROUPS GENERATED BY REFLECTIONS AND ROTATIONS. Transform. Groups, 21 (4). S. 1155 - 1202. NEW YORK: SPRINGER BIRKHAUSER. ISSN 1531-586X

2014

Grammatikos, Georgios, Lange, Christian, Susser, Simone, Schwendy, Susanne, Dikopoulos, Nektarios, Buggisch, Peter, Encke, Jens, Teuber, Gerlinde, Goeser, Tobias, Thimme, Robert, Klinker, Hartwig, Boecher, Wulf O., Schulte-Frohlinde, Ewert, Penna-Martinez, Marissa, Badenhoop, Klaus, Zeuzem, Stefan, Berg, Thomas ORCID: 0000-0003-0003-6241 and Sarrazin, Christoph (2014). Vitamin D Levels Vary during Antiviral Treatment but Are Unable to Predict Treatment Outcome in HCV Genotype 1 Infected Patients. PLoS One, 9 (2). SAN FRANCISCO: PUBLIC LIBRARY SCIENCE. ISSN 1932-6203