Pith Number

pith:CQTDHDIW

pith:2012:CQTDHDIWRCNOSOCERNXQWHDCTQ

not attested not anchored not stored refs pending

A characterisation of generically rigid frameworks on surfaces of revolution

Anthony Nixon, John Owen, Stephen Power

arxiv:1210.7073 v3 · 2012-10-26 · math.MG · math.CO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{CQTDHDIWRCNOSOCERNXQWHDCTQ}

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	2026-05-18T02:50:13.626071Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1426338d16889ae938448b6f0b1c629c14f1594289066564109c7fc578b4a378

Aliases

arxiv: 1210.7073 · arxiv_version: 1210.7073v3 · doi: 10.48550/arxiv.1210.7073 · pith_short_12: CQTDHDIWRCNO · pith_short_16: CQTDHDIWRCNOSOCE · pith_short_8: CQTDHDIW

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/CQTDHDIWRCNOSOCERNXQWHDCTQ \
  | 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: 1426338d16889ae938448b6f0b1c629c14f1594289066564109c7fc578b4a378

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "445d6e79006e9d712f6853d6e48ca935ea3dae394d47f396c8000863eeafa295",
    "cross_cats_sorted": [
      "math.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.MG",
    "submitted_at": "2012-10-26T09:12:44Z",
    "title_canon_sha256": "691226a3d5d47fe240af9d6b440f1ee90dbc21550a67f0dcfd5d5d3bc9136d59"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1210.7073",
    "kind": "arxiv",
    "version": 3
  }
}