Pith Number

pith:6FR4E22D

pith:2013:6FR4E22DNSFCUR6WBZNOJGCZ3N

not attested not anchored not stored refs pending

Pre- and post-selected quantum states: density matrices, tomography, and Kraus operators

Anthony J. Short, Nicolas Brunner, Noah Linden, Ralph Silva, Sandu Popescu, Yelena Guryanova

arxiv:1308.2089 v1 · 2013-08-09 · quant-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{6FR4E22DNSFCUR6WBZNOJGCZ3N}

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

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	2026-05-18T03:00:49.319940Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f163c26b436c8a2a47d60e5ae49859db4b94484ba77decef22a8eea866614aeb

Aliases

arxiv: 1308.2089 · arxiv_version: 1308.2089v1 · doi: 10.48550/arxiv.1308.2089 · pith_short_12: 6FR4E22DNSFC · pith_short_16: 6FR4E22DNSFCUR6W · pith_short_8: 6FR4E22D

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/6FR4E22DNSFCUR6WBZNOJGCZ3N \
  | 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: f163c26b436c8a2a47d60e5ae49859db4b94484ba77decef22a8eea866614aeb

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c6059d0619a9be4645a4cbd85f2240fa34b57ef674f1454fbcb14fe2a098f42a",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2013-08-09T11:08:05Z",
    "title_canon_sha256": "94ae62a980f481f1c0d30fdda0b0780c296a8b3d22e4c53d7a0bd3362f19b72a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1308.2089",
    "kind": "arxiv",
    "version": 1
  }
}