Higher derivative extensions of 3d Chern-Simons models: conservation laws and stability being a polynomial of the Chern–
Simons operator. For the nth-order theory of this type, we provide a
Extension of the Chern-Simons theory: conservation laws, Lagrange structures, and stability polynomial of the Chern–
Simons operator. For the nth order theory of this type, we provide a covariant
Chern-Simons term in the geometric theory of defects© 2017 American Physical Society. The Chern-
Simons term is used in the geometric theory of defects