Pith Number

pith:NI42PD4V

pith:1994:NI42PD4VOZVVUWDPOU4WPMLXOF

not attested not anchored not stored refs pending

Simple Formula for Nuclear Charge Radius

B. Nerlo-Pomorska, K. Pomorski (The Maria Curie-Sklodowska University, Lublin, Poland)

arxiv:nucl-th/9401015 v1 · 1994-01-19 · nucl-th

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{NI42PD4VOZVVUWDPOU4WPMLXOF}

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	2026-05-18T01:38:12.784202Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6a39a78f95766b5a586f753967b17771727c94de187fd27b1d9d94ffd39d407e

Aliases

arxiv: nucl-th/9401015 · arxiv_version: nucl-th/9401015v1 · doi: 10.48550/arxiv.nucl-th/9401015 · pith_short_12: NI42PD4VOZVV · pith_short_16: NI42PD4VOZVVUWDP · pith_short_8: NI42PD4V

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/NI42PD4VOZVVUWDPOU4WPMLXOF \
  | 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: 6a39a78f95766b5a586f753967b17771727c94de187fd27b1d9d94ffd39d407e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "92cf074be3b54421e04366a4d1c3bdfd5ba1123a95a45d7cd5709c31aebb4b65",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "nucl-th",
    "submitted_at": "1994-01-19T14:33:42Z",
    "title_canon_sha256": "0b677f747968b3dfe5cb5e33fd28a417d9346912e9b49d057174b4c5359fb5bf"
  },
  "schema_version": "1.0",
  "source": {
    "id": "nucl-th/9401015",
    "kind": "arxiv",
    "version": 1
  }
}