Pith Number

pith:2M3TYILP

pith:2009:2M3TYILPJMZKMHMLT6ZYUXTXT3

not attested not anchored not stored refs pending

Minimal tomography with entanglement witnesses

Berthold-Georg Englert, Huangjun Zhu, Yong Siah Teo

arxiv:0906.3985 v1 · 2009-06-22 · 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{2M3TYILPJMZKMHMLT6ZYUXTXT3}

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	2026-05-18T02:13:13.478811Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d3373c216f4b32a61d8b9fb38a5e779eef23e3509005e3bd83a8b54d0d6039e3

Aliases

arxiv: 0906.3985 · arxiv_version: 0906.3985v1 · doi: 10.48550/arxiv.0906.3985 · pith_short_12: 2M3TYILPJMZK · pith_short_16: 2M3TYILPJMZKMHML · pith_short_8: 2M3TYILP

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/2M3TYILPJMZKMHMLT6ZYUXTXT3 \
  | 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: d3373c216f4b32a61d8b9fb38a5e779eef23e3509005e3bd83a8b54d0d6039e3

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "015b5347425c4abfafff30fb51a6c8fcc3c3e9fe83457b305d57982a05d259ec",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2009-06-22T11:42:35Z",
    "title_canon_sha256": "47fcbdbe32973af709778ebd8753eb65ae5e6ccbd92d8944ebe8433a7ab76f5e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0906.3985",
    "kind": "arxiv",
    "version": 1
  }
}