Pith Number

pith:OEXGLSUK

pith:2014:OEXGLSUKINCDU7CK3NYTOW2FG7

not attested not anchored not stored refs pending

Efficient algorithms to decide tightness

Basudeb Datta, Benjamin A. Burton, Bhaskar Bagchi, Jonathan Spreer, Nitin Singh

arxiv:1412.1547 v1 · 2014-12-04 · cs.CG · 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{OEXGLSUKINCDU7CK3NYTOW2FG7}

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	2026-05-18T00:02:36.898412Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

712e65ca8a43443a7c4adb71375b4537d1717683881c9af810ea772f4c12f424

Aliases

arxiv: 1412.1547 · arxiv_version: 1412.1547v1 · doi: 10.48550/arxiv.1412.1547 · pith_short_12: OEXGLSUKINCD · pith_short_16: OEXGLSUKINCDU7CK · pith_short_8: OEXGLSUK

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/OEXGLSUKINCDU7CK3NYTOW2FG7 \
  | 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: 712e65ca8a43443a7c4adb71375b4537d1717683881c9af810ea772f4c12f424

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "10218b36c9e921a0f2d2d4ca20f3f1ad5fa5682ba0fba4b09fa9454351a12b54",
    "cross_cats_sorted": [
      "math.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CG",
    "submitted_at": "2014-12-04T03:54:03Z",
    "title_canon_sha256": "7d661a1aa91544b07beb2b79f8ef3fbb66dd4eab365d47bb1ac8966669172586"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1412.1547",
    "kind": "arxiv",
    "version": 1
  }
}