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Merged
merged 2 commits into from
Mar 31, 2025
Merged

use SymmetrySectors.nsymbol #21

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ccf9ea1
use SymmetrySectors.nsymbol
ogauthe Mar 28, 2025
5ca3b51
bump version
ogauthe Mar 31, 2025
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4 changes: 2 additions & 2 deletions Project.toml
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Original file line number Diff line number Diff line change
@@ -1,7 +1,7 @@
name = "FusionTensors"
uuid = "e16ca583-1f51-4df0-8e12-57d32947d33e"
authors = ["ITensor developers <[email protected]> and contributors"]
version = "0.2.2"
version = "0.2.3"

[deps]
Accessors = "7d9f7c33-5ae7-4f3b-8dc6-eff91059b697"
Expand Down Expand Up @@ -29,7 +29,7 @@ LRUCache = "1.6.1"
LabelledNumbers = "0.1.0"
LinearAlgebra = "1.10.0"
Strided = "2.2.0"
SymmetrySectors = "0.1.7"
SymmetrySectors = "0.1.9"
TensorAlgebra = "0.2.4"
TensorProducts = "0.1.3"
TypeParameterAccessors = "0.2.0"
Expand Down
19 changes: 9 additions & 10 deletions src/fusion_trees/fusiontree.jl
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Original file line number Diff line number Diff line change
Expand Up @@ -5,9 +5,16 @@

using GradedUnitRanges: AbstractGradedUnitRange, GradedUnitRanges, flip, isdual, sector_type
using SymmetrySectors:
×, AbstractSector, SectorProduct, SymmetrySectors, arguments, trivial, to_gradedrange
×,
AbstractSector,
SectorProduct,
SymmetrySectors,
arguments,
nsymbol,
to_gradedrange,
trivial
using TensorAlgebra: flatten_tuples
using TensorProducts: ⊗, tensor_product
using TensorProducts: ⊗

#
# A fusion tree fuses N sectors sec1, secN onto one sector fused_sec. A given set of
Expand Down Expand Up @@ -185,14 +192,6 @@ function outer_multiplicity_kron(
return linear_inds[outer_multiplicity1, outer_multiplicity2]
end

# TODO move to GradedUnitRanges
function nsymbol(s1::AbstractSector, s2::AbstractSector, s3::AbstractSector)
full_space = to_gradedrange(s1 ⊗ s2)
x = findfirst(==(s3), blocklabels(full_space))
isnothing(x) && return 0 # OR labelled(0, s3)?
return Int(blocklengths(full_space)[x])
end

function outer_multiplicity_split(
sec1::S, sec2::S, fused::S, outer_mult_index::Integer
) where {S<:SectorProduct}
Expand Down
1 change: 1 addition & 0 deletions test/Project.toml
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Expand Up @@ -16,4 +16,5 @@ Test = "8dfed614-e22c-5e08-85e1-65c5234f0b40"
Aqua = "0.8.9"
SafeTestsets = "0.1"
Suppressor = "0.2"
SymmetrySectors = "0.1.9"
Test = "1.10"
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