RIEMANN GEOMETRY

1) M. do Carmo, «Riemannian geometry», Birkhauser Boston, 1992. 2) J. Lee, «Riemannian manifolds, an introduction to curvature», Vol. 176, Springer, 1997. 3) J. Jost, «Riemannian Geometry \& Geometric Analysis», Springer, 2017. 4) P. Petersen, «Riemannian geometry», GTM, 171, Springer, 2016. 5) J.H. Eschenburg, «Comparison theorems in Riemannian geometry», Lecture Notes, Universitaet Augsburg, 1994. 6) J. W. Milnor, «Morse Theory», Princeton University Press, 1963. 7) J. Cheeger, D. G. Ebin, «Comparison Theorems in Riemannian geometry», AMS Chelsea Publishing, 2008. 8) Δ. Κουτρουφιώτης, «Διαφορική Γεωμετρία», Π.Ι., 1994. 9) J. M. Lee, «Introduction to Smooth Manifolds», Springer, GTM, volume 218, 2012, 10)W. Boothby, «An introduction to differentiable manifolds and Riemannian geometry», Academic Press, 2002, 11)F. W. Warner, «Foundations of Differentiable Manifolds and Lie Groups», Springer, GTM, volume 94, 1983.