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This subtopic studies obstructions and regulators, focusing on invariants that detect when algebraic or geometric constructions fail to exist or can be measured analytically.
19G05 studies stability in obstructions and regulators. It studies obstructions, regulators, and hermitian refinements that compare algebraic K-theory with arithmetic and geometric structures.
Obstructions And Regulators (Wikipedia)
Used to detect obstructions, compare forms, and measure regulator-type invariants.
19G12 studies witt groups of rings in obstructions and regulators. It studies obstructions, regulators, and hermitian refinements that compare algebraic K-theory with arithmetic and geometric structures.
Obstructions And Regulators (Wikipedia)
Used to detect obstructions, compare forms, and measure regulator-type invariants.
19G24 studies $l$-theory of group rings in obstructions and regulators. It studies obstructions, regulators, and hermitian refinements that compare algebraic K-theory with arithmetic and geometric structures.
Obstructions And Regulators (Wikipedia)
Used to detect obstructions, compare forms, and measure regulator-type invariants.
19G38 studies hermitian algebraic $k$-theory in obstructions and regulators. It studies obstructions, regulators, and hermitian refinements that compare algebraic K-theory with arithmetic and geometric structures.
Obstructions And Regulators (Wikipedia)
Used to detect obstructions, compare forms, and measure regulator-type invariants.