Pith Number

pith:SY2PWDUW

pith:2009:SY2PWDUWLXEB7G5FKL5KZ7J76O

not attested not anchored not stored refs pending

The Standard model prediction for K(e2)/K_(mu2) and pi(e2)/pi(mu2)

Ignasi Rosell

arxiv:0910.2347 v1 · 2009-10-13 · hep-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{SY2PWDUWLXEB7G5FKL5KZ7J76O}

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	2026-05-18T02:34:19.103466Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9634fb0e965dc81f9ba552faacfd3ff38fc3596f133909d9584fdc57807bce70

Aliases

arxiv: 0910.2347 · arxiv_version: 0910.2347v1 · doi: 10.48550/arxiv.0910.2347 · pith_short_12: SY2PWDUWLXEB · pith_short_16: SY2PWDUWLXEB7G5F · pith_short_8: SY2PWDUW

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/SY2PWDUWLXEB7G5FKL5KZ7J76O \
  | 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: 9634fb0e965dc81f9ba552faacfd3ff38fc3596f133909d9584fdc57807bce70

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "257de8be4d1b718c4d2c2154126a14589cb6a65a0198f0cef42a84da189618d9",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "hep-ph",
    "submitted_at": "2009-10-13T09:36:38Z",
    "title_canon_sha256": "208dadbb446aecba473f4c82e7118eb1f46f7fd3071786268ab4193e44d8dad3"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0910.2347",
    "kind": "arxiv",
    "version": 1
  }
}