Pith Number

pith:TTFRKRD7

pith:2011:TTFRKRD7D4JU7CPS4VWTNTZDLW

not attested not anchored not stored refs pending

Calculation of the two-photon decay rates of hydrogen-like ions by using B-polynomials

A. Surzhykov (UH, CfA, CfA), F. Parente (DFFCT, GSI), J. P. Santos (DFFCT, LKB - Jussieu), P. Amaro (DFFCT, P. Indelicato (LKB - Jussieu)

arxiv:1104.4818 v1 · 2011-04-25 · math-ph · math.MP · 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{TTFRKRD7D4JU7CPS4VWTNTZDLW}

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	2026-05-18T02:02:15.161708Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9ccb15447f1f134f89f2e56d36cf235db4522d8f7e5c8f96548de2e2dbdff038

Aliases

arxiv: 1104.4818 · arxiv_version: 1104.4818v1 · doi: 10.48550/arxiv.1104.4818 · pith_short_12: TTFRKRD7D4JU · pith_short_16: TTFRKRD7D4JU7CPS · pith_short_8: TTFRKRD7

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/TTFRKRD7D4JU7CPS4VWTNTZDLW \
  | 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: 9ccb15447f1f134f89f2e56d36cf235db4522d8f7e5c8f96548de2e2dbdff038

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "339a2e95f0214e007fa4d302e16d4bfcee3d162e650916312e05032840a8fe2b",
    "cross_cats_sorted": [
      "math.MP",
      "physics.atom-ph"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math-ph",
    "submitted_at": "2011-04-25T22:46:01Z",
    "title_canon_sha256": "d0686b0e3e137c97d2124ea4aa9be747fd9765f0e18aaf182d1d23245ed59745"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1104.4818",
    "kind": "arxiv",
    "version": 1
  }
}