Pith Number

pith:DBTLGZG5

pith:2009:DBTLGZG5UZ3TAU6CFCU5D5WT73

not attested not anchored not stored refs pending

Capturing Polynomial Time on Interval Graphs

Bastian Laubner

arxiv:0911.3799 v3 · 2009-11-19 · cs.LO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{DBTLGZG5UZ3TAU6CFCU5D5WT73}

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	2026-05-18T04:31:42.257585Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1866b364dda6773053c228a9d1f6d3fee0f63d5aebc2b4ee3c838b0ce4975c4b

Aliases

arxiv: 0911.3799 · arxiv_version: 0911.3799v3 · doi: 10.48550/arxiv.0911.3799 · pith_short_12: DBTLGZG5UZ3T · pith_short_16: DBTLGZG5UZ3TAU6C · pith_short_8: DBTLGZG5

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/DBTLGZG5UZ3TAU6CFCU5D5WT73 \
  | 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: 1866b364dda6773053c228a9d1f6d3fee0f63d5aebc2b4ee3c838b0ce4975c4b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "33518e8988c7dda9ad20e891a8d1e3a8fae7eecd00be7165a0269eb828a96e2d",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.LO",
    "submitted_at": "2009-11-19T14:29:45Z",
    "title_canon_sha256": "d344b8f7c1d592a080d499ddf92d7f3626161bb3a97d921e1148d48e9e6fb04a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0911.3799",
    "kind": "arxiv",
    "version": 3
  }
}