Humboldt-Universität zu Berlin Institut für Mathematik
Adresse	Rudower Chaussee 25 12489 Berlin
Postanschrift	Unter den Linden 6 D-10099 Berlin
Telefon	+49 (0)30 2093 2358
email	waterstn@math.hu-berlin.de
Büro	Rudower Chaussee 25, Raum 1.311

• Dirichlet Postdoc at the Berlin Mathematical School.
• Member of SFB 647: Space-Time-Matter.
• Member of the group Geometric Analysis and Spectral Theory.

Teaching

• Summer 2015: Differential Geometry II (4+2h) at HU Berlin
• Winter 2014/15: Ordinary differential equations (4+2h) at HU Berlin
• Summer 2014: Topological K-theory (2h) at HU Berlin
• Winter 2013/14: Fredholm operators (2h) at HU Berlin
• Summer 2013: PhD course on Fredholm operators and spectral flow at Università degli Studi di Torino

Articles

Submitted Preprints

• F. Bei, N. Waterstraat, On the space of connections having non-trivial twisted harmonic spinors , ( arXiv: 1506.04236 )
• A. M. Candela, N. Waterstraat, Bifurcation of critical points along gap-continuous families of subspaces , ( arXiv: 1412.6042 )

Publications

• N. Waterstraat, Spectral flow, crossing forms and homoclinics of Hamiltonian systems , Proc. Lond. Math. Soc. (3) 111 (2015), 275-304 ( arXiv: 1406.3760 )
• A. Portaluri, N. Waterstraat, Yet another proof of the Morse index theorem , Expositiones Math. 33 (2015), no. 3, 378-386 ( arxiv: 1312.5291)
• N. Waterstraat, On bifurcation for semilinear elliptic Dirichlet problems on shrinking domains , Springer Proc. Math. Stat. 119 (2015), 273-291 ( arXiv: 1403.4151)
• A. Portaluri, N. Waterstraat, A Morse-Smale index theorem for indefinite elliptic systems and bifurcation , J. Differential Equations 258 (2015), no. 5, 1715-1748 ( arxiv: 1408.1419 )
• M. Starostka, N. Waterstraat, A remark on singular sets of vector bundle morphisms , European J. Math. 1 (2015), 154-159 ( arxiv: 1312.4387)
• N. Waterstraat, A family index theorem for periodic Hamiltonian systems and bifurcation , Calc. Var. Partial Differential Equations 52 (2015), 727-753 ( arxiv: 1305.5679)
• A. Portaluri, N. Waterstraat, On bifurcation for semilinear elliptic Dirichlet problems on geodesic balls , J. Math. Anal. Appl. 415 (2014), 240-246 ( arxiv: 1305.3078)
• A. Portaluri, N. Waterstraat, Bifurcation results for critical points of families of functionals , Differential Integral Equations 27 (2014), no. 3-4, 369-386 ( arxiv: 1210.0417)
• J. Pejsachowicz, N. Waterstraat, Bifurcation of critical points for continuous families of C2 functionals of Fredholm type , J. Fixed Point Theory Appl. 13 (2013), no. 2, 537-560 ( arxiv: 1307.1043)
• A. Portaluri, N. Waterstraat, On bifurcation for semilinear elliptic Dirichlet problems and the Morse-Smale index theorem , J. Math. Anal. Appl. 408 (2013), no. 2, 572-575 ( arxiv: 1301.1458)
• N. Waterstraat, A remark on the space of metrics having nontrivial harmonic spinors , J. Fixed Point Theory Appl. 13 (2013), no. 1, 143-149 ( arxiv: 1206.0499)
• N. Waterstraat, The index bundle for gap-continuous families and the spectral flow , Oberwolfach Rep. 9 (2012), 1530-1532
• N. Waterstraat, A K-theoretic proof of the Morse index theorem in semi-Riemannian geometry , Proc. Amer. Math. Soc. 140 (2012), no. 1, 337-349 ( arxiv: 1007.1190)
• N. Waterstraat, The index bundle for Fredholm morphisms , Rend. Semin. Mat. Univ. Politec. Torino 69 (2011), no. 3, 299-315 ( arxiv: 1209.0267)
• N. Waterstraat, The Index Bundle in the Gap Topology, Morse-type Index Theorems and Bifurcation , PhD thesis, Göttingen, 2011 ( link)