Pith Number

pith:BBBB6CCC

pith:2018:BBBB6CCCQPJ45YNNHNYPPOSW5U

not attested not anchored not stored refs pending

Losing Treewidth by Separating Subsets

Anupam Gupta, Euiwoong Lee, Jason Li, Micha{\l} W{\l}odarczyk, Pasin Manurangsi

arxiv:1804.01366 v2 · 2018-04-04 · 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{BBBB6CCCQPJ45YNNHNYPPOSW5U}

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	2026-05-18T00:02:35.293815Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

08421f084283d3cee1ad3b70f7ba56ed31e0589544626ab2eb65cb596c8ec7d7

Aliases

arxiv: 1804.01366 · arxiv_version: 1804.01366v2 · doi: 10.48550/arxiv.1804.01366 · pith_short_12: BBBB6CCCQPJ4 · pith_short_16: BBBB6CCCQPJ45YNN · pith_short_8: BBBB6CCC

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/BBBB6CCCQPJ45YNNHNYPPOSW5U \
  | 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: 08421f084283d3cee1ad3b70f7ba56ed31e0589544626ab2eb65cb596c8ec7d7

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9c354b0feab9bb4e8f9b5f2a655f02a4febbf3e30f8676a111fa1f91a0419465",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DS",
    "submitted_at": "2018-04-04T12:27:48Z",
    "title_canon_sha256": "1d450891be645e5e07ac489f5f85a12c91dd1c783c855cc841236ffd0188fe6c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1804.01366",
    "kind": "arxiv",
    "version": 2
  }
}