Pith Number

pith:4OB4DPDH

pith:2004:4OB4DPDHCR3RITGE2BW2PUOMDN

not attested not anchored not stored refs pending

A survey of topological work at CEOL

Homeira Pajoohesh, M. P. Schellekens

arxiv:math/0412556 v1 · 2004-12-31 · math.GN

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{4OB4DPDHCR3RITGE2BW2PUOMDN}

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	2026-07-04T14:39:29.919864Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e383c1bc671477144cc4d06da7d1cc1b742b5683bbe3edec5150eaa3f49619bf

Aliases

arxiv: math/0412556 · arxiv_version: math/0412556v1 · doi: 10.48550/arxiv.math/0412556 · pith_short_12: 4OB4DPDHCR3R · pith_short_16: 4OB4DPDHCR3RITGE · pith_short_8: 4OB4DPDH

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/4OB4DPDHCR3RITGE2BW2PUOMDN \
  | 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: e383c1bc671477144cc4d06da7d1cc1b742b5683bbe3edec5150eaa3f49619bf

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "869d6fb66619640a7c81d0c5f8df20879ff25a904953480fe459004b52a3f0b1",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "math.GN",
    "submitted_at": "2004-12-31T19:13:40Z",
    "title_canon_sha256": "cbb76d55eac2430cdc724c7287d39841629fe0f0cc732d1d1ea9536da1ef48e2"
  },
  "schema_version": "1.0",
  "source": {
    "id": "math/0412556",
    "kind": "arxiv",
    "version": 1
  }
}