Pith Number

pith:X42O2XBP

pith:2015:X42O2XBPDFHC3CSE4HZ3UYC52V

not attested not anchored not stored refs pending

Parameterized Lower Bounds and Dichotomy Results for the NP-completeness of $H$-free Edge Modification Problems

Naveen Sivadasan, N. R. Aravind, R. B. Sandeep

arxiv:1509.08807 v1 · 2015-09-29 · 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{X42O2XBPDFHC3CSE4HZ3UYC52V}

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	2026-05-18T01:31:47.048160Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

bf34ed5c2f194e2d8a44e1f3ba605dd546eceece53352d82cb8fe1350e6bbe07

Aliases

arxiv: 1509.08807 · arxiv_version: 1509.08807v1 · doi: 10.48550/arxiv.1509.08807 · pith_short_12: X42O2XBPDFHC · pith_short_16: X42O2XBPDFHC3CSE · pith_short_8: X42O2XBP

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/X42O2XBPDFHC3CSE4HZ3UYC52V \
  | 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: bf34ed5c2f194e2d8a44e1f3ba605dd546eceece53352d82cb8fe1350e6bbe07

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "338bdf57794e2880b71058d12f8d72b7c38586c646597e26fae00bfafaecfb4b",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DS",
    "submitted_at": "2015-09-29T15:33:06Z",
    "title_canon_sha256": "3142232e2b2a2cd82c4effbaca5095cb26b122c0d6a73ea327495c265d4d25c4"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1509.08807",
    "kind": "arxiv",
    "version": 1
  }
}