Pith Number

pith:QXNBLGO4

pith:2012:QXNBLGO4ANYJQYKN7VOZ3G77R3

not attested not anchored not stored refs pending

Anomalous coverings

Jerzy Dydak

arxiv:1210.3733 v2 · 2012-10-13 · math.AT · 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{QXNBLGO4ANYJQYKN7VOZ3G77R3}

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	2026-05-18T03:43:04.711885Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

85da1599dc037098614dfd5d9d9bff8ed0a61e214a92dc782b1001c821d1b4fe

Aliases

arxiv: 1210.3733 · arxiv_version: 1210.3733v2 · doi: 10.48550/arxiv.1210.3733 · pith_short_12: QXNBLGO4ANYJ · pith_short_16: QXNBLGO4ANYJQYKN · pith_short_8: QXNBLGO4

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/QXNBLGO4ANYJQYKN7VOZ3G77R3 \
  | 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: 85da1599dc037098614dfd5d9d9bff8ed0a61e214a92dc782b1001c821d1b4fe

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f387fad313b65d6d913c6c07e6815ea230dbe9e262d58c5f1f6246428c5d2ad1",
    "cross_cats_sorted": [
      "math.GN"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AT",
    "submitted_at": "2012-10-13T18:56:00Z",
    "title_canon_sha256": "bd32e8a4489e81471be44a833c8cf13a1cc9b86e6977736855ee78b9af98b7b3"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1210.3733",
    "kind": "arxiv",
    "version": 2
  }
}