Pith Number

pith:QHIUDEIR

pith:2018:QHIUDEIRS7ER4LTDMGXBRSS6C6

not attested not anchored not stored refs pending

Aspherical Relative Presentations All Over Again

Gerald Williams, Martin Edjvet, William A. Bogley

arxiv:1809.03460 v2 · 2018-09-10 · 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{QHIUDEIRS7ER4LTDMGXBRSS6C6}

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	2026-05-17T23:47:52.701763Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

81d141911197c91e2e6361ae18ca5e178121f865041b169af8ed84e60d5d1008

Aliases

arxiv: 1809.03460 · arxiv_version: 1809.03460v2 · doi: 10.48550/arxiv.1809.03460 · pith_short_12: QHIUDEIRS7ER · pith_short_16: QHIUDEIRS7ER4LTD · pith_short_8: QHIUDEIR

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/QHIUDEIRS7ER4LTDMGXBRSS6C6 \
  | 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: 81d141911197c91e2e6361ae18ca5e178121f865041b169af8ed84e60d5d1008

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d1254aaf248c229db91ddb70fde54efde8792b70610350f626aed344ace69912",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.GR",
    "submitted_at": "2018-09-10T17:02:40Z",
    "title_canon_sha256": "369ca2230cd53b6ae5c756213854c4b6bb4dd5742ffcab7c48156351477f6535"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1809.03460",
    "kind": "arxiv",
    "version": 2
  }
}