Current Publications
$\bullet $ Volker Branding and Anna Siffert. On the equivariant stability of harmonic self-maps of cohomogeneity one manifolds. Journal of Mathematical Analysis and Applications, 517(2):Paper No. 126635, 19, January 2023. doi:10.1016/j.jmaa.2022.126635.
$\bullet $ Volker Branding and Anna Siffert. Infinite families of harmonic self-maps of ellipsoids in all dimensions. arXiv e-prints, October 2022. arXiv:2210.17240.
$\bullet $ Volker Branding and Anna Siffert. On p-harmonic self-maps of spheres. arXiv e-prints, August 2022. arXiv:2208.00705.
$\bullet $ Anna Siffert and Jan Wuzyk. A family of free boundary minimal surfaces in the unit ball. J. Geom. Anal., 32(8):215, June 2022. doi:10.1007/s12220-022-00957-5.
$\bullet $ Asma Hassannezhad and Anna Siffert. Escobar constants of planar domains. Ann. Glob. Anal. Geom., 61(2):215–233, March 2022. doi:10.1007/s10455-021-09805-1.
$\bullet $ Sigmundur Gudmundsson, Anna Siffert, and Marko Sobak. Explicit proper $p$-harmonic functions on the Riemannian symmetric spaces SU(n)/SO(n), Sp(n)/U(n), SO(2n)/U(n), SU(2n)/Sp(n). J. Geom. Anal., 32(5):147, February 2022. doi:10.1007/s12220-022-00885-4.
$\bullet $ Henrik Matthiesen and Anna Siffert. Existence of metrics maximizing the first eigenvalue on non-orientable surfaces. J. Spectr. Theory, 11(3):1279–1296, September 2021. doi:10.4171/jst/372.
$\bullet $ Volker Branding and Anna Siffert. On the stability of harmonic self-maps of cohomogeneity one manifolds. arXiv e-prints, July 2021. arXiv:2107.03715.
$\bullet $ Sigmundur Gudmundsson, Anna Siffert, and Marko Sobak. Explicit $p$-harmonic functions on rank-one Lie groups of Iwasawa type. J. Geom. Phys., 164:Paper No. 104205, 16, June 2021. doi:10.1016/j.geomphys.2021.104205.
$\bullet $ Maree Jaramillo, Raquel Perales, Priyanko Rajan, Catherine Searle, and Anna Siffert. Alexandrov spaces with integral current structure. Comm. Anal. Geom., 29(1):115–149, March 2021. doi:10.4310/CAG.2021.v29.n1.a4.
$\bullet $ Sigmundur Gudmundsson and Anna Siffert. New biharmonic functions on the compact Lie groups SO(n), SU(n), Sp(n). J. Geom. Anal., 31(1):250–281, January 2021. doi:10.1007/s12220-019-00259-3.
$\bullet $ Sigmundur Gudmundsson and Anna Siffert. Proper $r$-harmonic functions on the Thurston geometries. J. Geom. Phys., 154:103729, 12, August 2020. doi:10.1016/j.geomphys.2020.103729.
$\bullet $ Henrik Matthiesen and Anna Siffert. Sharp asymptotics of the first eigenvalue on some degenerating surfaces. Trans. Am. Math. Soc., 373(8):5903–5936, August 2020. doi:10.1090/tran/8114.
$\bullet $ Asma Hassannezhad and Anna Siffert. A note on Kuttler–Sigillito's inequalities. Ann. Math. Qué., 44(1):125–147, April 2020. doi:10.1007/s40316-019-00113-6.
$\bullet $ Thomas Püttmann and Anna Siffert. Harmonic self-maps of cohomogeneity one manifolds. Math. Ann., 375(1):247–282, October 2019. doi:10.1007/s00208-019-01848-x.