δ-invariants, Inequalities and Ideal Immersions

The following sections are included:

• Motivation

• Definition of δ-invariants

• δ-invariants and Einstein and conformally flat manifolds

• Fundamental inequalities involving δ-invariants

• Ideal immersions via δ-invariants

• Examples of ideal immersions

• δ-invariants of curvature-like tensor

• A dimension and decomposition theorem