Pith Number

pith:GDHWPXT6

pith:2017:GDHWPXT6MFNFDOCGBR4DMU6TUN

not attested not anchored not stored refs pending

Positive-instance driven dynamic programming for treewidth

Hisao Tamaki

arxiv:1704.05286 v2 · 2017-04-18 · 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{GDHWPXT6MFNFDOCGBR4DMU6TUN}

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	2026-05-18T00:26:12.857183Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

30cf67de7e615a51b8460c783653d3a348c2ffd9798a89d02668fba600da0ebb

Aliases

arxiv: 1704.05286 · arxiv_version: 1704.05286v2 · doi: 10.48550/arxiv.1704.05286 · pith_short_12: GDHWPXT6MFNF · pith_short_16: GDHWPXT6MFNFDOCG · pith_short_8: GDHWPXT6

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/GDHWPXT6MFNFDOCGBR4DMU6TUN \
  | 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: 30cf67de7e615a51b8460c783653d3a348c2ffd9798a89d02668fba600da0ebb

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "fc28b2edd05527ab99c1869dffb10e20c0135fe299e538d6b1aaf45507bf4235",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DS",
    "submitted_at": "2017-04-18T11:58:56Z",
    "title_canon_sha256": "b0ad0aaed430bb13a4b8b7eaf22ccfb185b84088c5bee545bc3e9b683579e07b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1704.05286",
    "kind": "arxiv",
    "version": 2
  }
}