Pith Number

pith:FOEWBEMQ

pith:2018:FOEWBEMQAC66SWOVFVSS3H6ZEG

not attested not anchored not stored refs pending

New Limits of Treewidth-based tractability in Optimization

Gonzalo Mu\~noz, Sebastian Pokutta, Yuri Faenza

arxiv:1807.02551 v4 · 2018-07-06 · cs.DM · cs.CC

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{FOEWBEMQAC66SWOVFVSS3H6ZEG}

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	2026-05-17T23:50:49.083891Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2b8960919000bde959d52d652d9fd921898873e088fcc5cd17c0b28629c9f6bf

Aliases

arxiv: 1807.02551 · arxiv_version: 1807.02551v4 · doi: 10.48550/arxiv.1807.02551 · pith_short_12: FOEWBEMQAC66 · pith_short_16: FOEWBEMQAC66SWOV · pith_short_8: FOEWBEMQ

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/FOEWBEMQAC66SWOVFVSS3H6ZEG \
  | 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: 2b8960919000bde959d52d652d9fd921898873e088fcc5cd17c0b28629c9f6bf

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3d529fb56631af70d40914607a53a9f1722b20534d845eb24d533ddd50e8c909",
    "cross_cats_sorted": [
      "cs.CC"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DM",
    "submitted_at": "2018-07-06T19:13:45Z",
    "title_canon_sha256": "8cae56444df3fe9f1e9c25f8dadac21a300903b510a7c0055df10e63344997ff"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1807.02551",
    "kind": "arxiv",
    "version": 4
  }
}