Pith Number

pith:6FM7C24I

pith:2016:6FM7C24IAMV5S2D2GSN4ZQVRUR

not attested not anchored not stored refs pending

Quantum state tomography via reduced density matrices

Bei Zeng, Dawei Lu, Guilu Long, Jianxin Chen, Joel Klassen, Nengkun Yu, Raymond Laflamme, Tao Xin, Xian Ma, Zhengfeng Ji

arxiv:1604.02046 v1 · 2016-04-07 · 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{6FM7C24IAMV5S2D2GSN4ZQVRUR}

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	2026-05-18T00:52:39.849231Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f159f16b88032bd9687a349bccc2b1a45a33bdea37d64a98d34f9504c7f16897

Aliases

arxiv: 1604.02046 · arxiv_version: 1604.02046v1 · doi: 10.48550/arxiv.1604.02046 · pith_short_12: 6FM7C24IAMV5 · pith_short_16: 6FM7C24IAMV5S2D2 · pith_short_8: 6FM7C24I

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/6FM7C24IAMV5S2D2GSN4ZQVRUR \
  | 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: f159f16b88032bd9687a349bccc2b1a45a33bdea37d64a98d34f9504c7f16897

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c9eb47e5892aef89112c219ce28cc8d224dba410de5e0f69b92f6500d42b47d8",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2016-04-07T15:41:12Z",
    "title_canon_sha256": "2ee20c2c58e9b1f193671ea962c5ad670e334cacc02295a86fff5aec4ee4a679"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1604.02046",
    "kind": "arxiv",
    "version": 1
  }
}