Pith Number

pith:EXF3EBTP

pith:2012:EXF3EBTPRRXNPJWYFKZS2V6YG3

not attested not anchored not stored refs pending

Potential wells with a unique brake orbit. Counterexamples to a conjecture by H. Seifert

F. Giannoni, P. Piccione, R. Giamb\`o

arxiv:1203.5198 v2 · 2012-03-23 · 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{EXF3EBTPRRXNPJWYFKZS2V6YG3}

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	2026-05-18T02:50:43.403850Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

25cbb2066f8c6ed7a6d82ab32d57d836c1b82dacd4141bd44cb8e20ea8c4c1bb

Aliases

arxiv: 1203.5198 · arxiv_version: 1203.5198v2 · doi: 10.48550/arxiv.1203.5198 · pith_short_12: EXF3EBTPRRXN · pith_short_16: EXF3EBTPRRXNPJWY · pith_short_8: EXF3EBTP

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/EXF3EBTPRRXNPJWYFKZS2V6YG3 \
  | 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: 25cbb2066f8c6ed7a6d82ab32d57d836c1b82dacd4141bd44cb8e20ea8c4c1bb

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6e1dc04b2512d4c1ac91cbb0711accda545712f1aadfd955a74ae732b17d0d44",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.DS",
    "submitted_at": "2012-03-23T09:29:56Z",
    "title_canon_sha256": "27a4b102c13431151af4cc2dd93de576b44186faf30a91ff3a5164809d799170"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1203.5198",
    "kind": "arxiv",
    "version": 2
  }
}