RT Journal Article T1 U(1)-invariant current forms A1 Castrillón López, Marco A1 Muñoz Masqué, Jaime AB Lagrangians are investigated which are defined on the product of the cotangent bundle of a manifold and a vector space, where the vector space is the representation space of a linear representation of the group U(1) as the gauge group. It is shown that Lagrangians with gauge-invariant universal currents are described in terms of gauge-invariant Lagrangians and invariant functions on the vector space. PB Elsevier SN 0034-4877 YR 2003 FD 2003-12 LK https://hdl.handle.net/20.500.14352/50805 UL https://hdl.handle.net/20.500.14352/50805 LA eng DS Docta Complutense RD 7 abr 2025