Pith Number

pith:5ZJI76BW

pith:2007:5ZJI76BW4KLLWUHVG7J2DIV33Z

not attested not anchored not stored refs pending

The Forgotten Night: The Number Devil Explores Spherical Geometry

Marissa L. Weichman

arxiv:0706.3342 v1 · 2007-06-22 · math.HO · physics.ed-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{5ZJI76BW4KLLWUHVG7J2DIV33Z}

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	2026-05-18T04:09:16.083094Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ee528ff836e296bb50f537d3a1a2bbde4d03599e4b74c41e22f6bae3e1b30eef

Aliases

arxiv: 0706.3342 · arxiv_version: 0706.3342v1 · doi: 10.48550/arxiv.0706.3342 · pith_short_12: 5ZJI76BW4KLL · pith_short_16: 5ZJI76BW4KLLWUHV · pith_short_8: 5ZJI76BW

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/5ZJI76BW4KLLWUHVG7J2DIV33Z \
  | 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: ee528ff836e296bb50f537d3a1a2bbde4d03599e4b74c41e22f6bae3e1b30eef

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "bd52959e193cb3d1c31895a4d49f0b9bafaa8d5b5c7d8bdda8a38b66d5ec7087",
    "cross_cats_sorted": [
      "physics.ed-ph"
    ],
    "license": "",
    "primary_cat": "math.HO",
    "submitted_at": "2007-06-22T14:29:06Z",
    "title_canon_sha256": "01aa72e1209e051c86eaa4809c038399a7a77cc9fa5c10391b7e57ea28820209"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0706.3342",
    "kind": "arxiv",
    "version": 1
  }
}