nkdsl.KBodyIteratorSpec¶

class KBodyIteratorSpec(labels, index_sets)[source]¶

Static K-body iterator over a pre-computed list of site-index tuples.

This iterator evaluates a term kernel once per entry in index_sets. Each entry is a K-tuple of integer site indices that are bound to the corresponding element of labels inside the evaluation environment.

For a single-site iterator over all N sites, use KBodyIteratorSpec(labels=("i",), index_sets=tuple((k,) for k in range(N))). For a static triplet iterator, provide the explicit list of (e1, e2, e3) triplets. For a global (one-branch) term, use KBodyIteratorSpec(labels=(), index_sets=((),)).

Parameters:

labels (tuple)
index_sets (tuple)

labels¶

Ordered tuple of K label strings bound per iteration.

Type:: tuple

index_sets¶

M-tuple of K-tuples of int site indices.

Type:: tuple

__init__(labels, index_sets)¶

Parameters:

labels (tuple)
index_sets (tuple)

Return type:

None

Methods

`__init__`(labels, index_sets)
`format_iterate_line`([max_shown])	Returns a compact readable description of the iteration domain.

Attributes

`kind`
`label_a`
`label_b`
`labels`
`index_sets`