Pith Number

pith:TZWACTD6

pith:2010:TZWACTD63Q5ACSSFTNR5DREQKF

not attested not anchored not stored refs pending

Rigidity of Frameworks Supported on Surfaces

A. Nixon, J.C. Owen, S.C. Power

arxiv:1009.3772 v2 · 2010-09-20 · math.CO · math.MG

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{TZWACTD63Q5ACSSFTNR5DREQKF}

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	2026-05-18T03:44:04.796421Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9e6c014c7edc3a014a459b63d1c49051499e6d415b5f8b2b8e22eeb72c6ff0b3

Aliases

arxiv: 1009.3772 · arxiv_version: 1009.3772v2 · doi: 10.48550/arxiv.1009.3772 · pith_short_12: TZWACTD63Q5A · pith_short_16: TZWACTD63Q5ACSSF · pith_short_8: TZWACTD6

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/TZWACTD63Q5ACSSFTNR5DREQKF \
  | 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: 9e6c014c7edc3a014a459b63d1c49051499e6d415b5f8b2b8e22eeb72c6ff0b3

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "28f9bdfa4bc74a0c28665443bfdbfac182322dbcc101f18ba2ab2283f0ecebd7",
    "cross_cats_sorted": [
      "math.MG"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2010-09-20T11:06:43Z",
    "title_canon_sha256": "68109d09d6c542ce54c472df2fbe9052c8a744ab4ef4cbb8299657e8cfead1eb"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1009.3772",
    "kind": "arxiv",
    "version": 2
  }
}