Pith Number

pith:TA4NGQSQ

pith:2018:TA4NGQSQHQTO2MCSDNQEWUTHUY

not attested not anchored not stored refs pending

Generalised Darboux-Koenigs Metrics and 3-Dimensional Superintegrable Systems

Allan P. Fordy, Qing Huang

arxiv:1810.13368 v2 · 2018-10-31 · nlin.SI · math-ph · math.MP

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{TA4NGQSQHQTO2MCSDNQEWUTHUY}

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	2026-05-17T23:47:02.594311Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9838d342503c26ed30521b604b5267a63e291b1e92795e50e20a0f9d981fdc49

Aliases

arxiv: 1810.13368 · arxiv_version: 1810.13368v2 · doi: 10.48550/arxiv.1810.13368 · pith_short_12: TA4NGQSQHQTO · pith_short_16: TA4NGQSQHQTO2MCS · pith_short_8: TA4NGQSQ

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/TA4NGQSQHQTO2MCSDNQEWUTHUY \
  | 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: 9838d342503c26ed30521b604b5267a63e291b1e92795e50e20a0f9d981fdc49

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9b188d65ca7a04794a8ccef5d55f7420aa6d21948ea1fa414820120a30f7f6cc",
    "cross_cats_sorted": [
      "math-ph",
      "math.MP"
    ],
    "license": "http://creativecommons.org/licenses/by-sa/4.0/",
    "primary_cat": "nlin.SI",
    "submitted_at": "2018-10-31T16:05:35Z",
    "title_canon_sha256": "1cace26f67c8c71b4ff1c5b3f0059701b6c71b9663289ff920d8ca6383d5d9e3"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1810.13368",
    "kind": "arxiv",
    "version": 2
  }
}