Pith Number

pith:SLAEFNS6

pith:2015:SLAEFNS6RYRP54TV2S6Y6CJBNO

not attested not anchored not stored refs pending

On a question of Bumagin and Wise

Alan D. Logan

arxiv:1509.01848 v2 · 2015-09-06 · 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{SLAEFNS6RYRP54TV2S6Y6CJBNO}

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	2026-05-18T00:02:28.505695Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

92c042b65e8e22fef275d4bd8f09216ba5535fda4948c55581606fe97b892406

Aliases

arxiv: 1509.01848 · arxiv_version: 1509.01848v2 · doi: 10.48550/arxiv.1509.01848 · pith_short_12: SLAEFNS6RYRP · pith_short_16: SLAEFNS6RYRP54TV · pith_short_8: SLAEFNS6

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/SLAEFNS6RYRP54TV2S6Y6CJBNO \
  | 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: 92c042b65e8e22fef275d4bd8f09216ba5535fda4948c55581606fe97b892406

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7a55c3a8081a967df8907319c74adae0501ed643a8a7b2f0f59e5e8a6721d0af",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.GR",
    "submitted_at": "2015-09-06T19:50:17Z",
    "title_canon_sha256": "94ebfd8556535986ac726f43b689c24dbcedf69ba2350256aff81e4bfd485560"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1509.01848",
    "kind": "arxiv",
    "version": 2
  }
}