I'm a postdoc of SFB 1085 Higher Invariants and in the working group of Professor Bernd Ammann at the University of Regensburg (Germany).

Email address: nobuhiko(dot)otoba(at)ur(dot)de

Physical address: Fakultät für Mathematik, Universität Regensburg, 93040 Regensburg, Deutschland

Differential Geometry and Geometric Analysis related to the Yamabe problem. Uniqueness and multiplicity questions for solutions to superlinear subcritical second-order PDEs. Harmonic maps of spheres.

- N. Otoba, S. Roos, Scalar curvature and the multiconformal class of a direct product Riemannian manifold,
`arXiv:1808.06340 [math.DG]`(2018). - N. Otoba, J. Petean, Bifurcation for the constant scalar curvature equation and harmonic Riemannian submersions,
`arXiv:1611.06709v2 [math.DG]`(2016). - N. Otoba, J. Petean, Metrics of constant scalar curvature on sphere bundles, Differential Geom. Appl.
**46**, 146–163 (2016). - N. Otoba, Constant scalar curvature metrics on Hirzebruch surfaces, Extended Abstracts Fall 2013, Trends Math. 61–66 (2015).
- N. Otoba, Erratum to: Constant scalar curvature metrics on Hirzebruch surfaces, Ann. Global Anal. Geom.
**46**, no. 3, 225 (2014). - N. Otoba, Constant scalar curvature metrics on Hirzebruch surfaces, Ann. Global Anal. Geom.
**46**, no. 3, 197–223 (2014).

- Bifurcation Theory and its applications (Summer term 2018). References

- I was one of the organizers for the Conference: Analytical problems in conformal geometry and applications.
- I was the Reporter for the Oberwolfach Workshop 1732 “Analysis, Geometry and Topology of Positive Scalar Curvature Metrics” in August 2017.
- I graduated in September 2016 from Keio University, which is located in my hometown Yokohama. The title of my Ph.D thesis was “Uniqueness and multiplicity of constant scalar curvature metrics”. My Ph.D advisor was Professor Hiroyasu Izeki, whose Ph.D advisor was Professor Morio Obata.
- I was staying at CIMAT (Mexico) in Autumn 2014 and in Winter 2016.
- I spent my childhood in Rio de Janeiro, Brazil.