We construct an Euler system for Galois representations associated to cohomological cuspidal automorphic representations of , using the pushforwards of Eisenstein classes for .
David Loeffler, Christopher Skinner, Sarah Livia Zerbes, Euler systems for GSp(4). J. Eur. Math. Soc. 24 (2022), no. 2, pp. 669–733
DOI 10.4171/JEMS/1124