Pith Number

pith:K37WYM5Q

pith:2017:K37WYM5QK7ZAUTCDUO4Q6MHTDJ

not attested not anchored not stored refs pending

A $(1.4 + \epsilon)$-approximation algorithm for the $2$-Max-Duo problem

Guohui Lin, Peng Zhang, Taibo Luo, Tian Liu, Yao Xu, Yong Chen

arxiv:1702.06256 v2 · 2017-02-21 · 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{K37WYM5QK7ZAUTCDUO4Q6MHTDJ}

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	2026-05-18T00:35:55.373720Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

56ff6c33b057f20a4c43a3b90f30f31a5c6ff9ee45cd6940e3224527b0f72aea

Aliases

arxiv: 1702.06256 · arxiv_version: 1702.06256v2 · doi: 10.48550/arxiv.1702.06256 · pith_short_12: K37WYM5QK7ZA · pith_short_16: K37WYM5QK7ZAUTCD · pith_short_8: K37WYM5Q

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/K37WYM5QK7ZAUTCDUO4Q6MHTDJ \
  | 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: 56ff6c33b057f20a4c43a3b90f30f31a5c6ff9ee45cd6940e3224527b0f72aea

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0b0bcb39983d1754bef41679dab6b58a728b34ffededb5c2e5f135dbfaa2ed13",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DS",
    "submitted_at": "2017-02-21T04:06:15Z",
    "title_canon_sha256": "5380d66c9dee4cc4be036e76964629bab3a7f5febaed2655eff975203f4a5032"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1702.06256",
    "kind": "arxiv",
    "version": 2
  }
}