Pith Number

pith:FIAXUZIG

pith:2012:FIAXUZIGTUID4BTRVKUCT5DLIJ

not attested not anchored not stored refs pending

Second-order superposition operations via Hong-Ou-Mandel interference

Hyunchul Nha, Su-Yong Lee

arxiv:1204.2687 v1 · 2012-04-12 · 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{FIAXUZIGTUID4BTRVKUCT5DLIJ}

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	2026-05-18T01:57:53.171101Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2a017a65069d103e0671aaa829f46b4246b470939d1e1b5406f4e48832cde3f3

Aliases

arxiv: 1204.2687 · arxiv_version: 1204.2687v1 · doi: 10.48550/arxiv.1204.2687 · pith_short_12: FIAXUZIGTUID · pith_short_16: FIAXUZIGTUID4BTR · pith_short_8: FIAXUZIG

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/FIAXUZIGTUID4BTRVKUCT5DLIJ \
  | 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: 2a017a65069d103e0671aaa829f46b4246b470939d1e1b5406f4e48832cde3f3

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "827eef2e18e007750710ec6b9cdecc8572bad57c8b53d3b88eb132ee28289b59",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2012-04-12T11:30:24Z",
    "title_canon_sha256": "bab954a0aaf7f97640cf9d22b18a05b63140973c28a50479916d9665224d5fdc"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1204.2687",
    "kind": "arxiv",
    "version": 1
  }
}