Pith Number

pith:MYPBVKTG

pith:2012:MYPBVKTGMT3YE3VFPRV2WYTXNZ

not attested not anchored not stored refs pending

Incomplete quantum state estimation: a comprehensive study

Berthold-Georg Englert, Bohumil Stoklasa, Jaroslav Rehacek, Yong Siah Teo, Zdenek Hradil

arxiv:1202.1713 v1 · 2012-02-08 · 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{MYPBVKTGMT3YE3VFPRV2WYTXNZ}

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	2026-05-18T03:56:47.431564Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

661e1aaa6664f7826ea57c6bab62776e55afbf45d10e12b16ef93b76ab4f33ea

Aliases

arxiv: 1202.1713 · arxiv_version: 1202.1713v1 · doi: 10.48550/arxiv.1202.1713 · pith_short_12: MYPBVKTGMT3Y · pith_short_16: MYPBVKTGMT3YE3VF · pith_short_8: MYPBVKTG

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/MYPBVKTGMT3YE3VFPRV2WYTXNZ \
  | 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: 661e1aaa6664f7826ea57c6bab62776e55afbf45d10e12b16ef93b76ab4f33ea

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7646e611f9342b4fc4309296ea3305d46e79d63df594fde3e2a0ddb66ec519b3",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2012-02-08T14:40:37Z",
    "title_canon_sha256": "2ee747f6e616bcc91949f06d126d8d7611f4ad1d99c1b6d1a5b4708eed6613fd"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1202.1713",
    "kind": "arxiv",
    "version": 1
  }
}