Pith Number

pith:ZFHD2ALO

pith:2014:ZFHD2ALOOXC3TRDCCLLBRX6XW5

not attested not anchored not stored refs pending

Estimating the eigenstates of an unknown density operator without damaging it

Feng Cai, Jingliang Gao

arxiv:1410.5674 v1 · 2014-10-21 · 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{ZFHD2ALOOXC3TRDCCLLBRX6XW5}

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	2026-05-18T02:39:39.350027Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c94e3d016e75c5b9c46212d618dfd7b76f22fa8d692056c5c493cb19d9c8ee87

Aliases

arxiv: 1410.5674 · arxiv_version: 1410.5674v1 · doi: 10.48550/arxiv.1410.5674 · pith_short_12: ZFHD2ALOOXC3 · pith_short_16: ZFHD2ALOOXC3TRDC · pith_short_8: ZFHD2ALO

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/ZFHD2ALOOXC3TRDCCLLBRX6XW5 \
  | 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: c94e3d016e75c5b9c46212d618dfd7b76f22fa8d692056c5c493cb19d9c8ee87

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e9614ab064338377dd6ac6223309653d2b1cf26c84479420253b801e2c005a6b",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2014-10-21T14:17:08Z",
    "title_canon_sha256": "6b803c0ae37bc6cd69f25760c5e2cb8fd22d2b46ff3e254f139eb0c991ab23eb"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1410.5674",
    "kind": "arxiv",
    "version": 1
  }
}