Pith Number

pith:QHENNPDY

pith:2011:QHENNPDYNJKOWWSASMIDQ3TWHT

not attested not anchored not stored refs pending

Global surfaces of section in the planar restricted 3-body problem

Helmut Hofer, Joel W. Fish, Otto van Koert, Peter Albers, Urs Frauenfelder

arxiv:1103.3881 v1 · 2011-03-20 · math.SG · math.DG · math.DS

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{QHENNPDYNJKOWWSASMIDQ3TWHT}

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	2026-05-18T03:49:01.204172Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

81c8d6bc786a54eb5a409310386e763ce647542aebdaa4263d56f993cd09be56

Aliases

arxiv: 1103.3881 · arxiv_version: 1103.3881v1 · doi: 10.48550/arxiv.1103.3881 · pith_short_12: QHENNPDYNJKO · pith_short_16: QHENNPDYNJKOWWSA · pith_short_8: QHENNPDY

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/QHENNPDYNJKOWWSASMIDQ3TWHT \
  | 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: 81c8d6bc786a54eb5a409310386e763ce647542aebdaa4263d56f993cd09be56

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d3df5a28c864e84128f05e7a49ee3ee1560b4587cfa9bcb4f3aaef64479f28fa",
    "cross_cats_sorted": [
      "math.DG",
      "math.DS"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.SG",
    "submitted_at": "2011-03-20T19:30:15Z",
    "title_canon_sha256": "fc29547ddcfa7099bf6a81e9a47b25fb4deba0c6756f26a3b503b704720f51b5"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1103.3881",
    "kind": "arxiv",
    "version": 1
  }
}