Pith Number

pith:PVS36RXL

pith:2013:PVS36RXLDOKXUWSFZQIGLTYBBV

not attested not anchored not stored refs pending

On Sparsification for Computing Treewidth

Bart M. P. Jansen

arxiv:1308.3665 v1 · 2013-08-16 · cs.CC · cs.DM · cs.DS · math.CO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{PVS36RXLDOKXUWSFZQIGLTYBBV}

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	2026-05-18T03:15:44.305050Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7d65bf46eb1b957a5a45cc1065cf010d5a7d9b6a32efcab0a26951be401caaf9

Aliases

arxiv: 1308.3665 · arxiv_version: 1308.3665v1 · doi: 10.48550/arxiv.1308.3665 · pith_short_12: PVS36RXLDOKX · pith_short_16: PVS36RXLDOKXUWSF · pith_short_8: PVS36RXL

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/PVS36RXLDOKXUWSFZQIGLTYBBV \
  | 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: 7d65bf46eb1b957a5a45cc1065cf010d5a7d9b6a32efcab0a26951be401caaf9

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8b4fc065b7ba979b16e8fee903f1be7345a22a75a49b3195b9875ed9cf027832",
    "cross_cats_sorted": [
      "cs.DM",
      "cs.DS",
      "math.CO"
    ],
    "license": "http://creativecommons.org/licenses/by/3.0/",
    "primary_cat": "cs.CC",
    "submitted_at": "2013-08-16T16:47:07Z",
    "title_canon_sha256": "7c40b28552fb1ecfde1be5e95a9928edfd16b5ca755a244d496c27dcf0e6a85c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1308.3665",
    "kind": "arxiv",
    "version": 1
  }
}