atlas Library · Script File
hodge_normalize.at
Definitions in source order
imaginary_type
L5
imaginary_type (int s, KGBElt x) = intmove to basic.at
also defined in basic.at
hodge_normalize_verbose
L7
hodge_normalize_verbose = falsetau
L9
tau(int n,int k)also defined in basic.at, modules.at, sub_cells.at
hodge version of normalizing a parameterL11
NOTE: the type hodgeParamPol is equal to [ParamPol] however we cannot use any ParamPols here, because atlas automatically finalizes parameters when put in a ParamPol recall (see hodgeParamPol.at) if Q is a ParamPol, dearrange(Q)=[(vec,Param)]:[(f1,p1),...,(fn,pn)] <-> f1(v)*p_1 + ... + fn(v)*p_n we work entirely with these objects the downside is there is no collection of terms at the end, once all p_i are normal, do rearrange to get a hodgeParamPol (and collect terms) nL13
I(x,lambda,nu=0) is a parameter
gamma=infinitesimal character
alpha: simple complex root
beta=theta_x(alpha)
nu=0 => <gamma,beta^v>=<gamma,alpha^v>
Suppose: <gamma,alpha^v><=0
alpha simple, complex root (not necessarily integral)
a) If theta_x(alpha)<0 (alpha is a complex descent) then
I(x,lambda,0) -> I(s_alpha x,s_alpha\lambda,0)
b) If theta_x(alpha)>0 (\alpha is a complex ascent)
AND <gamma,alpha^v>=0 then return I(x,lambda,0)
c) If theta_x(alpha)>0 (\alpha is a complex ascent)
AND <gamma,alpha^v> < 0 (strict inequality)
let x'=s_alpha x,lambda'=s_alpha\lambda
I(x,lambda,0) -> vI(x',lambda,0) +
\sum_{k=1}^{k=[n/2]-1}v^{k-1}(v^2-1)I(x',lambda'-k\alpha,0) +
[v^{n/2}(v-1)I(x',lambda'-(n/2)\alpha,0)
The last term is the same as the general one except (v^2-1) is
replaced by (v-1), and it only occurs if n is even.L23hodge_reflection_complex
L51
hodge_reflection_complex(Param p, int i) = [(vec,Param)]hodge_reflection_imaginary
L91
hodge_reflection_imaginary(Param p, int i) = [(vec,Param)]hodge_reflection 2 overloads
L141
hodge_reflection(Param p, int i) = [vec,Param]L148
hodge_reflection(([vec,Param]) Q,int index,int root_number) = [vec,Param]apply reflection #root_number to term #index
hodge_normalize_0
L166
hodge_normalize_0([(vec,Param)] Q) = [(vec,Param)]recursively hodge_normalize first version: return [(vec,ParamPol)]
also in this file at line 183
hodge_normalize
L178
hodge_normalize([(vec,Param)] Q,RealForm G) = hodgeParamPolmain version: return hodgeParamPol
also in this file at line 184
hodge_normalize_0
L183
hodge_normalize_0 (Param p) = [(vec,Param)]also in this file at line 166
hodge_normalize
L184
hodge_normalize (Param p) = hodgeParamPolalso in this file at line 178
Generated from atlas-scripts at commit 648506c (2026-10-13).