Pith Number

pith:W3D3P3XC

pith:2017:W3D3P3XCKBDSU4C6VF4BBJ7T3O

not attested not anchored not stored refs pending

Construction of nearly hyperbolic distance on punctured spheres

Tanran Zhang, Toshiyuki Sugawa

arxiv:1704.07954 v1 · 2017-04-26 · math.CV

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{W3D3P3XCKBDSU4C6VF4BBJ7T3O}

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	2026-05-18T00:45:31.428238Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b6c7b7eee250472a705ea97810a7f3dba8d6240c31db9e5ab0c717a36f5f5ab3

Aliases

arxiv: 1704.07954 · arxiv_version: 1704.07954v1 · doi: 10.48550/arxiv.1704.07954 · pith_short_12: W3D3P3XCKBDS · pith_short_16: W3D3P3XCKBDSU4C6 · pith_short_8: W3D3P3XC

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/W3D3P3XCKBDSU4C6VF4BBJ7T3O \
  | 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: b6c7b7eee250472a705ea97810a7f3dba8d6240c31db9e5ab0c717a36f5f5ab3

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "41888d0f155a1998aa2d9fd664943b8de47174a3c5b795266fa0831a8c82ca36",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CV",
    "submitted_at": "2017-04-26T02:43:41Z",
    "title_canon_sha256": "98b81c13524457a772600b37a72aef01c24d53615086747e686d592f57af7c3d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1704.07954",
    "kind": "arxiv",
    "version": 1
  }
}