Pith Number

pith:RXRBUQFH

pith:2015:RXRBUQFH53ZU4CHBO2O5ACW4K3

not attested not anchored not stored refs pending

Automorphisms of the Baumslag-Gersten group

Boris Lishak

arxiv:1510.01617 v2 · 2015-10-06 · 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{RXRBUQFH53ZU4CHBO2O5ACW4K3}

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	2026-05-18T01:30:48.570694Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8de21a40a7eef34e08e1769dd00adc56edad3085210e2da88025da2d714eb4dc

Aliases

arxiv: 1510.01617 · arxiv_version: 1510.01617v2 · doi: 10.48550/arxiv.1510.01617 · pith_short_12: RXRBUQFH53ZU · pith_short_16: RXRBUQFH53ZU4CHB · pith_short_8: RXRBUQFH

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/RXRBUQFH53ZU4CHBO2O5ACW4K3 \
  | 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: 8de21a40a7eef34e08e1769dd00adc56edad3085210e2da88025da2d714eb4dc

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c2ebdf9a24a8b116d46e351d97a8734c1768050a4f3f73467fbf6850512bff17",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.GR",
    "submitted_at": "2015-10-06T15:14:48Z",
    "title_canon_sha256": "a662c0e192f1d4ac173171ff67fea17de1a7a9790358520f497688b072957da6"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1510.01617",
    "kind": "arxiv",
    "version": 2
  }
}