Pith Number

pith:VGH7LJOL

pith:2012:VGH7LJOLFTVTAKTZMDUBCDBI46

not attested not anchored not stored refs pending

The degenerate C. Neumann system I: symmetry reduction and convexity

Heinz Han{\ss}mann, Holger R. Dullin

arxiv:1205.1834 v1 · 2012-05-08 · math.DS · 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{VGH7LJOLFTVTAKTZMDUBCDBI46}

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	2026-05-18T03:20:09.888130Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a98ff5a5cb2ceb302a7960e8110c28e7ae5c420adf58417d6e8ea3fe0437d501

Aliases

arxiv: 1205.1834 · arxiv_version: 1205.1834v1 · doi: 10.48550/arxiv.1205.1834 · pith_short_12: VGH7LJOLFTVT · pith_short_16: VGH7LJOLFTVTAKTZ · pith_short_8: VGH7LJOL

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/VGH7LJOLFTVTAKTZMDUBCDBI46 \
  | 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: a98ff5a5cb2ceb302a7960e8110c28e7ae5c420adf58417d6e8ea3fe0437d501

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c55e9b19328e1d95ba91a75f780db57f0af50dfecfd32f8c16f8d815e50772c1",
    "cross_cats_sorted": [
      "math.SG",
      "nlin.SI"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.DS",
    "submitted_at": "2012-05-08T21:40:24Z",
    "title_canon_sha256": "c70ee672e876f17ad62ca6462f02a1fa9b299cf548ae0eb3c14061e35623e830"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1205.1834",
    "kind": "arxiv",
    "version": 1
  }
}