Pith Number

pith:EQG6YQGE

pith:2014:EQG6YQGEQANXALOCEQKVF75PNJ

not attested not anchored not stored refs pending

Periodic Orbits of Oval Billiards on Surfaces of Constant Curvature

Luciano Coutinho dos Santos, Sonia Pinto-de-Carvalho

arxiv:1411.0236 v3 · 2014-11-02 · 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{EQG6YQGEQANXALOCEQKVF75PNJ}

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	2026-05-18T01:12:36.515092Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

240dec40c4801b702dc2241552ffaf6a7d543dd6bdbe8b8ba7198231aca307c9

Aliases

arxiv: 1411.0236 · arxiv_version: 1411.0236v3 · doi: 10.48550/arxiv.1411.0236 · pith_short_12: EQG6YQGEQANX · pith_short_16: EQG6YQGEQANXALOC · pith_short_8: EQG6YQGE

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/EQG6YQGEQANXALOCEQKVF75PNJ \
  | 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: 240dec40c4801b702dc2241552ffaf6a7d543dd6bdbe8b8ba7198231aca307c9

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a25c55e979d70c4d0e09c1eb577fdb8f357af52fcd72330e9252a64ec72675d6",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.DS",
    "submitted_at": "2014-11-02T10:09:36Z",
    "title_canon_sha256": "41e954ea75ee6c2928a92bfbcea5d45bf5fd24bed3fd9a15aa9f4d78002a627e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1411.0236",
    "kind": "arxiv",
    "version": 3
  }
}