Pith Number

pith:NZD6JDEP

pith:2018:NZD6JDEPU3HIJDLXDGT2Z5QPAY

not attested not anchored not stored refs pending

Biautomatic structures in systolic Artin groups

Derek Holt, Sarah Rees

arxiv:1807.02532 v1 · 2018-07-06 · math.GR

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{NZD6JDEPU3HIJDLXDGT2Z5QPAY}

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	2026-05-18T00:11:16.827887Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6e47e48c8fa6ce848d7719a7acf60f061ce3460da1bb9a3c474ed0a8f5ccd697

Aliases

arxiv: 1807.02532 · arxiv_version: 1807.02532v1 · doi: 10.48550/arxiv.1807.02532 · pith_short_12: NZD6JDEPU3HI · pith_short_16: NZD6JDEPU3HIJDLX · pith_short_8: NZD6JDEP

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/NZD6JDEPU3HIJDLXDGT2Z5QPAY \
  | 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: 6e47e48c8fa6ce848d7719a7acf60f061ce3460da1bb9a3c474ed0a8f5ccd697

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "55734211dc45939f615e04035988b278dbe661e91fba069cf60672082fa5295d",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.GR",
    "submitted_at": "2018-07-06T18:03:47Z",
    "title_canon_sha256": "58a4faa492b329dae6c44c4d122ab37960cbd8f8f6ac0c2f2d7d1c983de28ed4"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1807.02532",
    "kind": "arxiv",
    "version": 1
  }
}