This book provides a comprehensive introduction to Submanifold theory, focusing on general properties of isometric and conformal immersions of Riemannian manifolds into space forms. One main theme is the isometric and conformal deformation problem for submanifolds of arbitrary dimension and codimension. Several relevant classes of submanifolds are also discussed, including constant curvature submanifolds, submanifolds of nonpositive extrinsic curvature, conformally flat submanifolds and real Kaehler submanifolds. This is the first textbook to treat a substantial proportion of the material presented here. The first chapters are suitable for an introductory course on Submanifold theory for students with a basic background on Riemannian geometry. The remaining chapters could be used in a more advanced course by students aiming at initiating research on the subject, and are also intended to serve as a reference for specialists in the field.

Marcos Dajczer is a researcher at the Instituto Matemática Pura e Aplicada (IMPA) in Rio de Janeiro. His main field of research is Submanifold Theory and is the author of around 130 articles. He is a fellow of the J. S. Guggenheim Foundation as well as a member of the Brazilian Academy of Sciences (ABC) and The World  Academy of Sciences (TWAS). His other interests include natural sciences and politics.

 Ruy Tojeiro is currently professor at the University of São Paulo at São Carlos (Brazil), and has been professor at the Federal University of São Carlos until 2018. He has authored over 50 research articles on Submanifold Theory. Besides mathematics, Ruy Tojeiro enjoys playing the baroque recorder.