Triple

Target class: differential cohomology theory
Context triple: [Cheeger–Simons differential characters, instanceOf, differential cohomology theory]

• A. cohomology theory chosen
  A cohomology theory is a functorial assignment of graded algebraic invariants to topological spaces (or other mathematical objects) that encodes global structural and obstruction information via axioms such as exactness and homotopy invariance.
• B. theory in differential topology
  A theory in differential topology is a coherent framework of concepts, theorems, and techniques that studies the properties of smooth manifolds and smooth maps between them that are invariant under smooth deformations.
• C. cohomological invariant
  A cohomological invariant is a rule that assigns to each object in a given class (such as algebraic varieties, groups, or topological spaces) an element of a cohomology group in a way that is functorial and captures structural or classification information about those objects.
• D. cohomological method
  A cohomological method is a technique in mathematics that uses cohomology theories to translate geometric, topological, or algebraic problems into computations with cohomology groups, enabling the extraction of structural and invariant information.
• E. homological invariant
  A homological invariant is a quantity or structure derived from homology theory that remains unchanged under specified transformations, used to distinguish and classify mathematical objects up to an appropriate notion of equivalence.
• F. None of above.