"The insider will find a lot of conjectures and valuable concrete material to think and mediate about. The interested layman will get a view onto rapidly moving important topics, starting with the study in Part 3 where an exposition of developments in number theory up to Artin's conjecture is given with the intention of helping the reader understand Parts 1 and 2." Mathematical Reviews

• Lifting Automorphic Forms of PGSp(2) to PGL(4): Basic Facts; Trace Formulae; Lifting from SO(4) to PGL(4); Lifting from PGSp(2) to PGL(4); Fundamental Lemma; Zeta Functions of Shimura Varieties of PGSp(2): Automorphic Representations; Local Terms; Real Representations; Galois Representations; Background: On Automorphic Forms; On Artin's Conjecture.

"The insider will find a lot of conjectures and valuable concrete material to think and mediate about. The interested layman will get a view onto rapidly moving important topics, starting with the study in Part 3 where an exposition of developments in number theory up to Artin's conjecture is given with the intention of helping the reader understand Parts 1 and 2." Mathematical Reviews

• Lifting Automorphic Forms of PGSp(2) to PGL(4): Basic Facts; Trace Formulae; Lifting from SO(4) to PGL(4); Lifting from PGSp(2) to PGL(4); Fundamental Lemma; Zeta Functions of Shimura Varieties of PGSp(2): Automorphic Representations; Local Terms; Real Representations; Galois Representations; Background: On Automorphic Forms; On Artin's Conjecture.

"The insider will find a lot of conjectures and valuable concrete material to think and mediate about. The interested layman will get a view onto rapidly moving important topics, starting with the study in Part 3 where an exposition of developments in number theory up to Artin's conjecture is given with the intention of helping the reader understand Parts 1 and 2." Mathematical Reviews

• Lifting Automorphic Forms of PGSp(2) to PGL(4): Basic Facts; Trace Formulae; Lifting from SO(4) to PGL(4); Lifting from PGSp(2) to PGL(4); Fundamental Lemma; Zeta Functions of Shimura Varieties of PGSp(2): Automorphic Representations; Local Terms; Real Representations; Galois Representations; Background: On Automorphic Forms; On Artin's Conjecture.