• How to read this blueprint ▶
    • Colours in the dependency graph.
    • Status
  • 1 General spin groups and GGP triples ▶
    • 1.1 Quadratic spaces and the general spin group
    • 1.2 GGP triples
  • 2 Representations, characters and quasi-characters ▶
    • 2.1 Representations and the multiplicity
    • 2.2 Characters and quasi-characters
  • 3 Inner forms and the main theorem ▶
    • 3.1 Inner forms, stability and packets
    • 3.2 The main theorem
  • 4 Proof of the main theorem from the multiplicity formula ▶
    • 4.1 The space \(\Gamma (G,H)\) and the geometric multiplicity
    • 4.2 Germ transfer
    • 4.3 Stable conjugacy in \(\Gamma (G,H)\)
    • 4.4 The signed count
    • 4.5 Rearrangement and the atom
  • 5 The multiplicity formula ▶
    • 5.1 Strongly cuspidal functions and the distribution \(J\)
    • 5.2 The induction
  • 6 The spectral side ▶
    • 6.1 Parabolic induction
    • 6.2 The spectral expansion
  • 7 The linear form \(m_{\mathrm{geom}}\)
  • 8 The geometric expansion ▶
    • 8.1 Extending \(J\) to quasi-characters
    • 8.2 Away from the centre
    • 8.3 Near the centre: descent to the Lie algebra
  • 9 Further statements not yet used by the main theorem ▶
    • 9.1 Estimates
    • 9.2 Levi subgroups
    • 9.3 Normalization checks on \(\mathfrak {sl}_2\)
  • Dependency graph

The local Gan–Gross–Prasad conjecture for general spin groups: a Lean blueprint

Samantha Pease

  • How to read this blueprint
    • Colours in the dependency graph.
    • Status
  • 1 General spin groups and GGP triples
    • 1.1 Quadratic spaces and the general spin group
    • 1.2 GGP triples
  • 2 Representations, characters and quasi-characters
    • 2.1 Representations and the multiplicity
    • 2.2 Characters and quasi-characters
  • 3 Inner forms and the main theorem
    • 3.1 Inner forms, stability and packets
    • 3.2 The main theorem
  • 4 Proof of the main theorem from the multiplicity formula
    • 4.1 The space \(\Gamma (G,H)\) and the geometric multiplicity
    • 4.2 Germ transfer
    • 4.3 Stable conjugacy in \(\Gamma (G,H)\)
    • 4.4 The signed count
    • 4.5 Rearrangement and the atom
  • 5 The multiplicity formula
    • 5.1 Strongly cuspidal functions and the distribution \(J\)
    • 5.2 The induction
  • 6 The spectral side
    • 6.1 Parabolic induction
    • 6.2 The spectral expansion
  • 7 The linear form \(m_{\mathrm{geom}}\)
  • 8 The geometric expansion
    • 8.1 Extending \(J\) to quasi-characters
    • 8.2 Away from the centre
    • 8.3 Near the centre: descent to the Lie algebra
  • 9 Further statements not yet used by the main theorem
    • 9.1 Estimates
    • 9.2 Levi subgroups
    • 9.3 Normalization checks on \(\mathfrak {sl}_2\)