Pith Number

pith:OVIJFCA4

pith:2010:OVIJFCA4CQEJMAKBQ2XIHTTNDJ

not attested not anchored not stored refs pending

Characterization of co-blockers for simple perfect matchings in a convex geometric graph

Chaya Keller, Micha A. Perles

arxiv:1011.5883 v1 · 2010-11-25 · 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{OVIJFCA4CQEJMAKBQ2XIHTTNDJ}

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	2026-05-18T04:34:37.954431Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

755092881c140896014186ae83ce6d1a43c06e21a1793347fc16274ed7147a38

Aliases

arxiv: 1011.5883 · arxiv_version: 1011.5883v1 · doi: 10.48550/arxiv.1011.5883 · pith_short_12: OVIJFCA4CQEJ · pith_short_16: OVIJFCA4CQEJMAKB · pith_short_8: OVIJFCA4

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/OVIJFCA4CQEJMAKBQ2XIHTTNDJ \
  | 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: 755092881c140896014186ae83ce6d1a43c06e21a1793347fc16274ed7147a38

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f17c6ff549e684bfa7bde30b8a9dc75f9c9fa0974ab00916496fce699687d66d",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2010-11-25T21:13:35Z",
    "title_canon_sha256": "f9451d7224b3f3114c7c68e36d1f1dcbaebe7ef1aafc443b250fea256ba8ac79"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1011.5883",
    "kind": "arxiv",
    "version": 1
  }
}