Pith Number

pith:Y2JG6QSC

pith:2009:Y2JG6QSCSIJWRWPBNRLPQYFSML

not attested not anchored not stored refs pending

The sensitivity of hyperfine structure to nuclear radius and quark mass variation

A. Dunning, T. H. Dinh, V. A. Dzuba, V. V. Flambaum

arxiv:0903.2090 v3 · 2009-03-12 · physics.atom-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{Y2JG6QSCSIJWRWPBNRLPQYFSML}

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	2026-05-18T04:37:34.358611Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c6926f4242921368d9e16c56f860b262d64f57bc9a7ca6b681184f21504b7f7c

Aliases

arxiv: 0903.2090 · arxiv_version: 0903.2090v3 · doi: 10.48550/arxiv.0903.2090 · pith_short_12: Y2JG6QSCSIJW · pith_short_16: Y2JG6QSCSIJWRWPB · pith_short_8: Y2JG6QSC

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/Y2JG6QSCSIJWRWPBNRLPQYFSML \
  | 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: c6926f4242921368d9e16c56f860b262d64f57bc9a7ca6b681184f21504b7f7c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e65096843dcfb875c92a01776bda233d2a0ae16499e9c4376e9eaa743c6aef71",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.atom-ph",
    "submitted_at": "2009-03-12T05:23:11Z",
    "title_canon_sha256": "cdd2fd11c341221234539bec23eb74125f3258f7e768705bf0ea6c9f43c4d466"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0903.2090",
    "kind": "arxiv",
    "version": 3
  }
}