Pith Number

pith:O2KXP4CA

pith:2012:O2KXP4CASKQ5V3ANKCOH4IDAEU

not attested not anchored not stored refs pending

Single Exponential FPT Algorithm for Interval Vertex Deletion and Interval Completion Problem

Arash Rafiey

arxiv:1211.4629 v2 · 2012-11-19 · cs.DS · cs.DM · 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{O2KXP4CASKQ5V3ANKCOH4IDAEU}

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	2026-05-18T01:21:14.155532Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

769577f04092a1daec0d509c7e2060251172ebbd38750b0181da5aa64d8ff0b9

Aliases

arxiv: 1211.4629 · arxiv_version: 1211.4629v2 · doi: 10.48550/arxiv.1211.4629 · pith_short_12: O2KXP4CASKQ5 · pith_short_16: O2KXP4CASKQ5V3AN · pith_short_8: O2KXP4CA

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/O2KXP4CASKQ5V3ANKCOH4IDAEU \
  | 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: 769577f04092a1daec0d509c7e2060251172ebbd38750b0181da5aa64d8ff0b9

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "bedb9cfd0cddcd158513a0e63e379f2911e1a399fda3f71e5ea08679497721e8",
    "cross_cats_sorted": [
      "cs.DM",
      "math.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DS",
    "submitted_at": "2012-11-19T23:55:21Z",
    "title_canon_sha256": "e76f89ec4edf084d803ec5c298ea93b7eb42ad057598da404efcc9e834c3d23c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1211.4629",
    "kind": "arxiv",
    "version": 2
  }
}