Script File
arthur_parameters.at
parametrizing sets of unipotent Arthur parameters: see notesOnUnipotentParamters.pdf in Dropbox see galois.at for strong_real_forms_central_invariant_e
Definitions in source order
arthur_parameters
L24
arthur_parameters(InnerClass ic,ComplexNilpotent O_check) = [ComplexNilpotent_d]Arthur parameters for inner class corresponding to given dual complex orbit
where Psi(SL(2,C)) <-> O_check
conceptual algorithm: run over conjugacy classes of order 2
in the (disconnected) centralizer_{G^v}(O_check)
actual algorithm:
rd_dual=O_check.root_datum
run over strong real forms y_1,...,y_n of rd_dual
let K^\vee_i=centralizer in rd_dual of y_i (
the complexified maximal compact of the corresponding real form of rd_dual
collect the nilpotent orbits of K^\vee_i whose saturation to G^v is equal to O_check
since K^\vee_i can be disconnected this is a ComplexNilpotent_d object,
first run over orbits for the identity component, and then mod out by
conjugation by the component group (see disconnected.at)
the return value is [ComplexNilpotent_d], each of which is a complex nilpotent
orbit for a (possibly disconnected) group K^vee_i
also in this file at line 43
arthur_parameters_by_orbit
L39
arthur_parameters_by_orbit(InnerClass ic) = [[ComplexNilpotent_d]]arthur parameters, listed by dual unipotent orbit; the return value is [[ComplexNilpotent_d]] the i^th array [ComplexNilpotent_d] is an array of orbits, for various K^\vee_j, whose G^\vee-saturation is the i^th unipotent G^\vee-orbit
arthur_parameters
L43
arthur_parameters(InnerClass ic) = [[ComplexNilpotent_d]]by_orbit is the default
also in this file at line 24
arthur_parameters_by_y
L50
arthur_parameters_by_y(InnerClass ic) = [[ComplexNilpotent_d]]arthur parameters, listed by dual strong real forms y the return value is [[ComplexNilpotent_d]] the i^th [ComplexNipotent_d] is the list of unipotent orbits for K^\vee_i
show 2 overloads
L54
show([[ComplexNilpotent]] list) = voidL61
show([[ComplexNilpotent_d]] list) = voidalso defined in modules.at, K_Nilpotent.at, good_W_representatives.at, sub_cells.at, associated_variety_annihilator.at, geck_generic.at, L_packet.at
Generated from atlas-scripts at commit 7e1b958 (2026-09-17).