Pith Number

pith:H2H47JTY

pith:2013:H2H47JTYE6DRVSGAR7TTUUVD37

not attested not anchored not stored refs pending

Independent Set, Induced Matching, and Pricing: Connections and Tight (Subexponential Time) Approximation Hardnesses

Bundit Laekhanukit, Danupon Nanongkai, Parinya Chalermsook

arxiv:1308.2617 v2 · 2013-08-12 · cs.CC · cs.DS

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{H2H47JTYE6DRVSGAR7TTUUVD37}

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	2026-05-18T03:15:42.841901Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3e8fcfa67827871ac8c08fe73a52a3dff82418f0fc2a526779b8f54d654e1162

Aliases

arxiv: 1308.2617 · arxiv_version: 1308.2617v2 · doi: 10.48550/arxiv.1308.2617 · pith_short_12: H2H47JTYE6DR · pith_short_16: H2H47JTYE6DRVSGA · pith_short_8: H2H47JTY

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/H2H47JTYE6DRVSGAR7TTUUVD37 \
  | 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: 3e8fcfa67827871ac8c08fe73a52a3dff82418f0fc2a526779b8f54d654e1162

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "55d95b9ed519042ac27863b30dee9b2032378d47a198260bac3d9b66dcb583fe",
    "cross_cats_sorted": [
      "cs.DS"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CC",
    "submitted_at": "2013-08-12T16:39:11Z",
    "title_canon_sha256": "2ea99bf67cd31a5141ca816dccc905335a46c01b23b973c261d389639fcf7a46"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1308.2617",
    "kind": "arxiv",
    "version": 2
  }
}