3 papers
math.DG2026
A Restricted Chen-Nagano Variational Principle for the Einstein-Hilbert Functional
Sergey Stepanov, Irina Tsyganok
This paper introduces a restricted Chen-Nagano variational principle for the Einstein-Hilbert functional on compact Riemannian manifolds. Instead of considering arbitrary symmetric…
math.DG2026
Projective Maps from the Perspective of Elliptic Differential Operators
Josef Mikesh, Sergey Stepanov
This paper develops an analytical approach to the study of the geometry of projective maps using the theory of elliptic differential operators. We construct two elliptic operators…
math.DG2011
From Infinitesimal Harmonic Transformations to Ricci Solitons
Sergey E. Stepanov
The concept of the Ricci soliton was introduced by Hamilton. Ricci soliton is defined by vector field and it's a natural generalization of Einstein metric. We have shown earlier th…