Pith Number

pith:HCON7IWW

pith:2014:HCON7IWWDXW7THCZNF4KWWPES6

not attested not anchored not stored refs pending

Solving the undirected feedback vertex set problem by local search

Hai-Jun Zhou, Shao-Meng Qin

arxiv:1405.0446 v1 · 2014-05-01 · cs.AI · cond-mat.dis-nn

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{HCON7IWWDXW7THCZNF4KWWPES6}

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	2026-05-18T01:43:20.488069Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

389cdfa2d61dedf99c596978ab59e497ab009020d44880845f58f3d6b3103740

Aliases

arxiv: 1405.0446 · arxiv_version: 1405.0446v1 · doi: 10.48550/arxiv.1405.0446 · pith_short_12: HCON7IWWDXW7 · pith_short_16: HCON7IWWDXW7THCZ · pith_short_8: HCON7IWW

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/HCON7IWWDXW7THCZNF4KWWPES6 \
  | 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: 389cdfa2d61dedf99c596978ab59e497ab009020d44880845f58f3d6b3103740

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "665b278c194e699f6f7666582e6ae1802e44617a4aa733731558aba03fd260c9",
    "cross_cats_sorted": [
      "cond-mat.dis-nn"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.AI",
    "submitted_at": "2014-05-01T09:18:25Z",
    "title_canon_sha256": "ff27b1b6c6e3142532485aa98af01b64ef63e03d2bd1b2d7db6bcc15f77f43e1"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1405.0446",
    "kind": "arxiv",
    "version": 1
  }
}