Pith Number

pith:7WPD5E77

pith:1998:7WPD5E77ZQOUQEMAVRFEQKVWG4

not attested not anchored not stored refs pending

The Nuclear Sigma Term in the Skyrme Model: Pion-Nucleus Interaction

A.Gammal (Instituto de Fisica da Universidade de Sao Paulo), Centro Tecnico Aeroespacial), ITA, T. Frederico (Departamento de Fisica

arxiv:nucl-th/9802085 v1 · 1998-02-27 · 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{7WPD5E77ZQOUQEMAVRFEQKVWG4}

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	2026-07-04T15:23:27.180651Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

fd9e3e93ffcc1d481180ac4a482ab6371b1390f4536731714103d4ecf4a1045e

Aliases

arxiv: nucl-th/9802085 · arxiv_version: nucl-th/9802085v1 · doi: 10.48550/arxiv.nucl-th/9802085 · pith_short_12: 7WPD5E77ZQOU · pith_short_16: 7WPD5E77ZQOUQEMA · pith_short_8: 7WPD5E77

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/7WPD5E77ZQOUQEMAVRFEQKVWG4 \
  | 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: fd9e3e93ffcc1d481180ac4a482ab6371b1390f4536731714103d4ecf4a1045e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2e778d1faca7523db8dfd1a18955ee5d5ddd7686aedc8ea625ac89bd34fdd6f0",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "nucl-th",
    "submitted_at": "1998-02-27T21:35:23Z",
    "title_canon_sha256": "0bbd3e6b6c49dd76ab19b1b95609c4d66bc747e599c7a71df784edddd208b856"
  },
  "schema_version": "1.0",
  "source": {
    "id": "nucl-th/9802085",
    "kind": "arxiv",
    "version": 1
  }
}