Pith Number

pith:DQPX25Y7

pith:2004:DQPX25Y7B3S22M4SXYCESUWQMZ

not attested not anchored not stored refs pending

A new integrable system on the sphere

Holger R. Dullin, Vladimir S. Matveev

arxiv:math/0406209 v1 · 2004-06-10 · math.DS · math-ph · math.DG · math.MP · math.SG · nlin.SI

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{DQPX25Y7B3S22M4SXYCESUWQMZ}

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	2026-05-18T04:15:05.690049Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1c1f7d771f0ee5ad3392be044952d066582983782882b847b06ea878b2efec7b

Aliases

arxiv: math/0406209 · arxiv_version: math/0406209v1 · doi: 10.48550/arxiv.math/0406209 · pith_short_12: DQPX25Y7B3S2 · pith_short_16: DQPX25Y7B3S22M4S · pith_short_8: DQPX25Y7

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/DQPX25Y7B3S22M4SXYCESUWQMZ \
  | 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: 1c1f7d771f0ee5ad3392be044952d066582983782882b847b06ea878b2efec7b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "791f9d18a06fc5c56924527dd51925bb3da63d624b6845da9e6bacec0bd9ad33",
    "cross_cats_sorted": [
      "math-ph",
      "math.DG",
      "math.MP",
      "math.SG",
      "nlin.SI"
    ],
    "license": "",
    "primary_cat": "math.DS",
    "submitted_at": "2004-06-10T10:32:37Z",
    "title_canon_sha256": "9361b7db4c4f9993c6d5bccd2a893980eba7e8328955bf7155d4d42ac29bd03d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "math/0406209",
    "kind": "arxiv",
    "version": 1
  }
}