LtdReport

Symbolica documentation for getting started, symbolic expressions, numerical evaluation, pattern matching, and APIs in Python and Rust.

`LtdReport`

class LtdReport

Generation counts for an LTD representation.

Distinguish retained pole assignments from spanning trees: several residues may share a tree, and a higher-order residue may contain several terms.

Examples

from symbolica.community import hepkit as hep
process = hep.Model.phi3().process(["phi"], ["phi", "phi"])
diagrams = process.generate_diagrams(
    loops=1, max_vertices=3, maximum_bridges=0, progress=None
)
diagram = diagrams.diagrams[0]
ltd = diagram.integrate_energy(method="ltd")
report = ltd.report
assert report.residues == len(ltd)

Attributes

Name	Description
`interned_surfaces`	Number of distinct stored affine energy surfaces.
`residues`	Number of retained signed pole assignments.
`trees`	Number of distinct spanning trees represented by the residues.
`unfolded_terms`	Number of additive denominator products, including higher-order residues.

`interned_surfaces`

LtdReport.interned_surfaces: builtins.int

Number of distinct stored affine energy surfaces.

Examples

count = report.interned_surfaces

`residues`

LtdReport.residues: builtins.int

Number of retained signed pole assignments.

Examples

count = report.residues

`trees`

LtdReport.trees: builtins.int

Number of distinct spanning trees represented by the residues.

Examples

count = report.trees

`unfolded_terms`

LtdReport.unfolded_terms: builtins.int

Number of additive denominator products, including higher-order residues.

Examples

count = report.unfolded_terms

Methods

Name	Description
`__repr__`	Summarize the retained residues, spanning trees, terms and surfaces.
`_repr_html_`	Render LTD generation statistics as a compact table.

`repr`

LtdReport.__repr__() -> builtins.str

Summarize the retained residues, spanning trees, terms and surfaces.

Examples

text = repr(report)

`_repr_html_`

LtdReport._repr_html_() -> builtins.str

Render LTD generation statistics as a compact table.

Examples

html = report._repr_html_()