Pith Number

pith:XWOC67UD

pith:2022:XWOC67UD7EKUVCRF65ZQ4GJUBI

not attested not anchored not stored refs pending

Pointlike sets with respect to ER

Karsten Henckell, Samuel Herman

arxiv:2204.09247 v1 · 2022-04-20 · math.GR · 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{XWOC67UD7EKUVCRF65ZQ4GJUBI}

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	2026-07-05T04:16:22.572343Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

bd9c2f7e83f9154a8a25f7730e19340a3e05e6678ba0b809200bdd920eb336a5

Aliases

arxiv: 2204.09247 · arxiv_version: 2204.09247v1 · doi: 10.48550/arxiv.2204.09247 · pith_short_12: XWOC67UD7EKU · pith_short_16: XWOC67UD7EKUVCRF · pith_short_8: XWOC67UD

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/XWOC67UD7EKUVCRF65ZQ4GJUBI \
  | 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: bd9c2f7e83f9154a8a25f7730e19340a3e05e6678ba0b809200bdd920eb336a5

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "87a9b701a423a9778c35d8d56a3969b134b43282dbfe2fb62bf6405000150a55",
    "cross_cats_sorted": [
      "math.RA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.GR",
    "submitted_at": "2022-04-20T06:28:02Z",
    "title_canon_sha256": "e8fff0a497e7c7f047e8b88d56f2bcf684cb57bde74735591f7d49939a3e8ff2"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2204.09247",
    "kind": "arxiv",
    "version": 1
  }
}