Pith Number

pith:73PPSGO4

pith:2013:73PPSGO4X5RSUYZS4BSUABXCYW

not attested not anchored not stored refs pending

Polyhedrons and PBIBDs from hyperbolic manifolds

Eran Nevo

arxiv:1308.3651 v2 · 2013-08-16 · math.CO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{73PPSGO4X5RSUYZS4BSUABXCYW}

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	2026-05-18T01:41:00.281336Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

fedef919dcbf632a6332e0654006e2c587a5135097398f4d0146a129ce76b696

Aliases

arxiv: 1308.3651 · arxiv_version: 1308.3651v2 · doi: 10.48550/arxiv.1308.3651 · pith_short_12: 73PPSGO4X5RS · pith_short_16: 73PPSGO4X5RSUYZS · pith_short_8: 73PPSGO4

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/73PPSGO4X5RSUYZS4BSUABXCYW \
  | 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: fedef919dcbf632a6332e0654006e2c587a5135097398f4d0146a129ce76b696

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5962df68c2a65cc6f2d806707e820f3508d26ee7d4fa7e3829e198f0fad9203b",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2013-08-16T15:29:27Z",
    "title_canon_sha256": "1920eeb24bc45eb97e7373ab308bc742d89ddb6dc5df6af92aa508e612d30515"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1308.3651",
    "kind": "arxiv",
    "version": 2
  }
}