Smash products deformations

Constructors

PBWDeformations.DeformationMapType
DeformationMap{C} = MatElem{FreeAssAlgElem{C}} where {C <: RingElem}

The type for deformation maps of a Lie algebra smash product. The entry kappa[i,j] should be the image of $v_i \wedge v_j$ under the deformation map, i.e. $κ(v_i,v_j)$. Deformation maps are always assumed to be quadratic and skew-symmetric.

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PBWDeformations.deformFunction
deform(sp::SmashProductLie{C}, kappa::DeformationMap{C}) where {C <: RingElem}

Constructs the deformation of the smash product sp by the deformation map kappa.

Returns a SmashProductLieDeform struct and a two-part basis.

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SmashProductLieDeform struct

Functions

The SmashProductLieDeform struct can be used as an argument for the following functions:

  • gen
  • gens
  • ngens

For gen, gens, and ngens, on can supply a symbol to choose the part of the smash product to use: :L for the Lie algebra, and :V for the module.