Pith Number

pith:2I3JMIS7

pith:2011:2I3JMIS74453PINSZZWRSJ3PXQ

not attested not anchored not stored refs pending

Periodic trajectories in the regular pentagon

Diana Davis, Dmitry Fuchs, Serge Tabachnikov

arxiv:1102.1005 v1 · 2011-02-04 · 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{2I3JMIS74453PINSZZWRSJ3PXQ}

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	2026-05-18T02:22:40.456696Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d23696225fe73bb7a1b2ce6d19276fbc1fb559a9eb7e10bc2848053d346f38df

Aliases

arxiv: 1102.1005 · arxiv_version: 1102.1005v1 · doi: 10.48550/arxiv.1102.1005 · pith_short_12: 2I3JMIS74453 · pith_short_16: 2I3JMIS74453PINS · pith_short_8: 2I3JMIS7

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/2I3JMIS74453PINSZZWRSJ3PXQ \
  | 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: d23696225fe73bb7a1b2ce6d19276fbc1fb559a9eb7e10bc2848053d346f38df

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5af5a4814618b9686f41a8817d459802d94871566d59f649d082a5be4a8c9653",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.DS",
    "submitted_at": "2011-02-04T19:54:53Z",
    "title_canon_sha256": "b432005c6ea5a26cc2052457a1beb93d78009775ccf7f2cebb83cab9f9f55e30"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1102.1005",
    "kind": "arxiv",
    "version": 1
  }
}