Pith Number

pith:W5SFENLQ

pith:2012:W5SFENLQFZTZUCDW637OOJRJPM

not attested not anchored not stored refs pending

Topological rigidity in totally disconnected locally compact groups

Rupert McCallum

arxiv:1210.1405 v11 · 2012-10-04 · 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{W5SFENLQFZTZUCDW637OOJRJPM}

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	2026-05-18T02:38:37.544223Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b7645235702e679a0876f6fee726297b39e2c164db59611fe696bdcc7f6d2c4b

Aliases

arxiv: 1210.1405 · arxiv_version: 1210.1405v11 · doi: 10.48550/arxiv.1210.1405 · pith_short_12: W5SFENLQFZTZ · pith_short_16: W5SFENLQFZTZUCDW · pith_short_8: W5SFENLQ

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/W5SFENLQFZTZUCDW637OOJRJPM \
  | 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: b7645235702e679a0876f6fee726297b39e2c164db59611fe696bdcc7f6d2c4b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6f606d4909c0827ba0ca564ec2286faee59a79abdeaad4bd564dbb1fb176440b",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.GR",
    "submitted_at": "2012-10-04T12:07:16Z",
    "title_canon_sha256": "1764ef60ffa879bd524a048260fc745b9f9dbfc2c2019b0becbaa2d04c537db2"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1210.1405",
    "kind": "arxiv",
    "version": 11
  }
}