Pith Number

pith:ELRWH4WM

pith:2018:ELRWH4WM3JIYOA6DXRZUYMOKID

not attested not anchored not stored refs pending

Embedded loops in the hyperbolic plane with prescribed, almost constant curvature

Fabio Zuddas, Roberta Musina

arxiv:1803.00856 v2 · 2018-03-02 · math.DG

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{ELRWH4WM3JIYOA6DXRZUYMOKID}

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	2026-05-18T00:20:44.010893Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

22e363f2ccda518703c3bc734c31ca40cd5f02d707f9b6627c8bec0b9e5c4dec

Aliases

arxiv: 1803.00856 · arxiv_version: 1803.00856v2 · doi: 10.48550/arxiv.1803.00856 · pith_short_12: ELRWH4WM3JIY · pith_short_16: ELRWH4WM3JIYOA6D · pith_short_8: ELRWH4WM

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/ELRWH4WM3JIYOA6DXRZUYMOKID \
  | 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: 22e363f2ccda518703c3bc734c31ca40cd5f02d707f9b6627c8bec0b9e5c4dec

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "201fc01a9e788d3ca91db564bb6694707a5eced49508999e6b301e17c7f3379c",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.DG",
    "submitted_at": "2018-03-02T14:13:30Z",
    "title_canon_sha256": "c184189160c17cafe9a5bfbf57933ce7dcfed94cdc6306c0fa58c34817e719c0"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1803.00856",
    "kind": "arxiv",
    "version": 2
  }
}