collection
Square homological product code
A homological product in which each boundary operator is a square nilpotent matrix. The product boundary is a Kronecker sum; its image and transpose image become the two CSS check spaces.
Scoped completion
Completion belongs to an entity, not the whole page
eczoo-entity:square_homological_product#collectionT1 — preserved
Verified formal skeleton
The formal core and displayed claims are provenance-checked. Unlisted facets are not yet surveyed, not negative results.
One orienting visual
Orienting view
Inspect constructor-derived qubits, stabilizers, and logical paths without leaving the entry. Visual instance: primary
At a glance
Executable-target parameters
form: collection formal target: css formal target: qldpc
Reference instances
| Instance | n | k | d |
|---|---|---|---|
| primary | n=25 verified | k=1 verified | d=4 verified |
Scientific scope
Source, page, and formal object are separate identities
Primary entity: eczoo-entity:square_homological_product#collection. Formalization target: eczoo-entity:square_homological_product#collection. Legacy vocabulary: exact class projection.
Source/entity binding: clean.