Pith Number

pith:SRQ6GP6P

pith:2018:SRQ6GP6PZGVCMIHOAWIIFQA2TR

not attested not anchored not stored refs pending

Entanglement of extremal density matrices of 2-qubit Hamiltonian with Kramers degeneracy

A. Figueroa, O. Castanos, R. Lopez-Pena

arxiv:1807.00227 v1 · 2018-06-30 · quant-ph

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{SRQ6GP6PZGVCMIHOAWIIFQA2TR}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more · Embed verified badge

Record completeness

1 Bitcoin timestamp

2 Internet Archive

3 Author claim open · sign in to claim

4 Citations open

5 Replications open

✓ Portable graph bundle live · download bundle · merged state

The bundle contains the canonical record plus signed events. A mirror can host it anywhere and recompute the same current state with the deterministic merge algorithm.

Receipt and verification

First computed	2026-05-18T00:11:55.607814Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9461e33fcfc9aa2620ee059082c01a9c5c21e784d95319b0f506af62ecb0c61e

Aliases

arxiv: 1807.00227 · arxiv_version: 1807.00227v1 · doi: 10.48550/arxiv.1807.00227 · pith_short_12: SRQ6GP6PZGVC · pith_short_16: SRQ6GP6PZGVCMIHO · pith_short_8: SRQ6GP6P

Agent API

Resolver JSON Graph JSON Events JSON Schema Signing key

Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/SRQ6GP6PZGVCMIHOAWIIFQA2TR \
  | jq -c '.canonical_record' \
  | python3 -c "import sys,json,hashlib; b=json.dumps(json.loads(sys.stdin.read()), sort_keys=True, separators=(',',':'), ensure_ascii=False).encode(); print(hashlib.sha256(b).hexdigest())"
# expect: 9461e33fcfc9aa2620ee059082c01a9c5c21e784d95319b0f506af62ecb0c61e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "eb73f80ad60cdb925224276dc29e1ea650d327e0f520d7af843834fcebd902d4",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2018-06-30T21:22:02Z",
    "title_canon_sha256": "a828cbd10a1bb50a38b04ff88171b689a376ed4cfc1260f04df12de02e9570a6"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1807.00227",
    "kind": "arxiv",
    "version": 1
  }
}