Pith Number

pith:33EC7SDF

pith:2009:33EC7SDFHCFH4N56KQ4WDBKFDD

not attested not anchored not stored refs pending

New Classes of Counterexamples to Hendrickson's Global Rigidity Conjecture

Jiayang Jiang, Samuel Frank

arxiv:0909.2893 v4 · 2009-09-15 · 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{33EC7SDFHCFH4N56KQ4WDBKFDD}

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	2026-05-18T02:24:47.168722Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

dec82fc865388a7e37be543961854518dbaf8d57690380317c403501193036a0

Aliases

arxiv: 0909.2893 · arxiv_version: 0909.2893v4 · doi: 10.48550/arxiv.0909.2893 · pith_short_12: 33EC7SDFHCFH · pith_short_16: 33EC7SDFHCFH4N56 · pith_short_8: 33EC7SDF

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/33EC7SDFHCFH4N56KQ4WDBKFDD \
  | 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: dec82fc865388a7e37be543961854518dbaf8d57690380317c403501193036a0

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9cf845639c3a31e882587547ee6bc0d49ff24f20f8cd8000635f387d1cbed9b9",
    "cross_cats_sorted": [
      "math.CO"
    ],
    "license": "http://creativecommons.org/licenses/by/3.0/",
    "primary_cat": "math.MG",
    "submitted_at": "2009-09-15T22:16:40Z",
    "title_canon_sha256": "b88b1ef278a7755430af62ce64bec06ccb677e67238d2138bbc5a07ed49f790f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0909.2893",
    "kind": "arxiv",
    "version": 4
  }
}