Pith Number

pith:IA3I6QYP

pith:2010:IA3I6QYP444LEEO6BORRKR6BTY

not attested not anchored not stored refs pending

Chimneys, leopard spots, and the identities of Basmajian and Bridgeman

Danny Calegari

arxiv:1005.4858 v2 · 2010-05-26 · math.GT · math.NT

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{IA3I6QYP444LEEO6BORRKR6BTY}

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	2026-05-18T02:41:50.873694Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

40368f430fe738b211de0ba31547c19e3256bca7781d0213f4930d571fa238f9

Aliases

arxiv: 1005.4858 · arxiv_version: 1005.4858v2 · doi: 10.48550/arxiv.1005.4858 · pith_short_12: IA3I6QYP444L · pith_short_16: IA3I6QYP444LEEO6 · pith_short_8: IA3I6QYP

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/IA3I6QYP444LEEO6BORRKR6BTY \
  | 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: 40368f430fe738b211de0ba31547c19e3256bca7781d0213f4930d571fa238f9

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "775907ad6188c3c7d0e26bf39bb1d2d44e76a84525863cdab8a0d87e8926241b",
    "cross_cats_sorted": [
      "math.NT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.GT",
    "submitted_at": "2010-05-26T15:59:39Z",
    "title_canon_sha256": "722f28a0479ccc7ba88bc7240d626bb43c543b09b96d1d867ffa5131ef20a10c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1005.4858",
    "kind": "arxiv",
    "version": 2
  }
}