Pith Number

pith:HWNBMOOM

pith:2006:HWNBMOOMHL7PM3HWXXOPPWLSQM

not attested not anchored not stored refs pending

Pseudo-categories

Nelson Martins Ferreira

arxiv:math/0604549 v1 · 2006-04-26 · math.CT · math.RA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{HWNBMOOMHL7PM3HWXXOPPWLSQM}

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.

Cited by

1 paper in Pith

Transposing cartesian and other structure in double categories

Receipt and verification

First computed	2026-07-04T14:54:38.266810Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3d9a1639cc3afef66cf6bddcf7d97283093ed969361f5a30ba9658875ba9f501

Aliases

arxiv: math/0604549 · arxiv_version: math/0604549v1 · doi: 10.48550/arxiv.math/0604549 · pith_short_12: HWNBMOOMHL7P · pith_short_16: HWNBMOOMHL7PM3HW · pith_short_8: HWNBMOOM

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/HWNBMOOMHL7PM3HWXXOPPWLSQM \
  | 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: 3d9a1639cc3afef66cf6bddcf7d97283093ed969361f5a30ba9658875ba9f501

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "fe52f3515908b81d546e43f60ea12aa5603138bba3cb2c2fd74dc3c5e22062ba",
    "cross_cats_sorted": [
      "math.RA"
    ],
    "license": "",
    "primary_cat": "math.CT",
    "submitted_at": "2006-04-26T04:09:07Z",
    "title_canon_sha256": "912ba6a2d609274bf99ca57c7fefa459709c718cad6f3fe4be2bfd8c69d74a04"
  },
  "schema_version": "1.0",
  "source": {
    "id": "math/0604549",
    "kind": "arxiv",
    "version": 1
  }
}