CutPartition

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`CutPartition`

class CutPartition

A separating topology partition, independent of physical final-state cuts.

Both boundary selections retain half-edges on their respective sides.

Examples

from symbolica import S, E
from symbolica.community import hepkit as hep
model = hep.Model.phi4()
diagram = model.process(["phi", "phi"], ["phi", "phi"]).generate_diagrams(loops=1, progress=None).diagrams[0]

partitions = diagram.all_cuts([0], [1])
boundary_edges = partitions[0].boundary_left.edges

Attributes

Name	Description
`boundary_left`	Crossing half-edges incident to the source side.
`boundary_right`	Crossing half-edges incident to the target side.
`source_side`	Region containing the requested source vertices.
`target_side`	Region containing the requested target vertices.

`boundary_left`

CutPartition.boundary_left: Subgraph

Crossing half-edges incident to the source side.

Examples

source_ports = diagram.all_cuts([0], [1])[0].boundary_left.half_edges

`boundary_right`

CutPartition.boundary_right: Subgraph

Crossing half-edges incident to the target side.

Examples

target_ports = diagram.all_cuts([0], [1])[0].boundary_right.half_edges

`source_side`

CutPartition.source_side: Subgraph

Region containing the requested source vertices.

Examples

source = diagram.all_cuts([0], [1])[0].source_side

`target_side`

CutPartition.target_side: Subgraph

Region containing the requested target vertices.

Examples

target = diagram.all_cuts([0], [1])[0].target_side