Pith Number

pith:2U4WV3ET

pith:2002:2U4WV3ETBEWMEJJKZNR2C7XZX5

not attested not anchored not stored refs pending

Pancharatnam revisited

Erik Sj\"oqvist

arxiv:quant-ph/0202078 v1 · 2002-02-14 · 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{2U4WV3ETBEWMEJJKZNR2C7XZX5}

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	2026-05-18T01:08:59.566571Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d5396aec93092cc2252acb63a17ef9bf60463c894e359e5938de172331eb8ca0

Aliases

arxiv: quant-ph/0202078 · arxiv_version: quant-ph/0202078v1 · doi: 10.48550/arxiv.quant-ph/0202078 · pith_short_12: 2U4WV3ETBEWM · pith_short_16: 2U4WV3ETBEWMEJJK · pith_short_8: 2U4WV3ET

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/2U4WV3ETBEWMEJJKZNR2C7XZX5 \
  | 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: d5396aec93092cc2252acb63a17ef9bf60463c894e359e5938de172331eb8ca0

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a887b4df57f966f6bdb53c611804ae294c26389ce2de42ca54de431cdb4c6bc4",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "quant-ph",
    "submitted_at": "2002-02-14T13:54:56Z",
    "title_canon_sha256": "e4a1016ee34db98f041d675934e0cec9f516b87b61d8920690f50e5edc223080"
  },
  "schema_version": "1.0",
  "source": {
    "id": "quant-ph/0202078",
    "kind": "arxiv",
    "version": 1
  }
}