Pith Number

pith:DOQIRD7T

pith:1999:DOQIRD7TL6N63CKBQX6MSHU22U

not attested not anchored not stored refs pending

The Hierarchy of Hamiltonians for a Restricted Class of Natanzon Potentials

Elso Drigo filho, Regina Maria Ricotta

arxiv:hep-th/9904038 v1 · 1999-04-06 · hep-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{DOQIRD7TL6N63CKBQX6MSHU22U}

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	2026-05-18T04:25:39.442235Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1ba0888ff35f9bed894185fcc91e9ad515b8c1eb27357c0e8511bd746775035d

Aliases

arxiv: hep-th/9904038 · arxiv_version: hep-th/9904038v1 · doi: 10.48550/arxiv.hep-th/9904038 · pith_short_12: DOQIRD7TL6N6 · pith_short_16: DOQIRD7TL6N63CKB · pith_short_8: DOQIRD7T

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/DOQIRD7TL6N63CKBQX6MSHU22U \
  | 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: 1ba0888ff35f9bed894185fcc91e9ad515b8c1eb27357c0e8511bd746775035d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1e0fe719bdf5238e4776ed5bed81eb355401f5fbd63628d3d184fe209b582411",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "hep-th",
    "submitted_at": "1999-04-06T21:16:59Z",
    "title_canon_sha256": "895a1793cca0eae9757ef798970132a0001a34d4183c2d68511a678876ba4007"
  },
  "schema_version": "1.0",
  "source": {
    "id": "hep-th/9904038",
    "kind": "arxiv",
    "version": 1
  }
}