Pith Number

pith:OFUTIOAM

pith:2018:OFUTIOAMIQ2TR256MEVI6ZAKIP

not attested not anchored not stored refs pending

An O^*(2.619^k) algorithm for 4-path vertex cover

Dekel Tsur

arxiv:1811.03592 v2 · 2018-11-08 · 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{OFUTIOAMIQ2TR256MEVI6ZAKIP}

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.

Cited by

1 paper in Pith

l-path vertex cover is easier than l-hitting set for small l

Receipt and verification

First computed	2026-05-17T23:56:52.661121Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

716934380c443538ebbe612a8f640a43e4f61f5cabbdcff0b6606d57054f17c1

Aliases

arxiv: 1811.03592 · arxiv_version: 1811.03592v2 · doi: 10.48550/arxiv.1811.03592 · pith_short_12: OFUTIOAMIQ2T · pith_short_16: OFUTIOAMIQ2TR256 · pith_short_8: OFUTIOAM

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/OFUTIOAMIQ2TR256MEVI6ZAKIP \
  | 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: 716934380c443538ebbe612a8f640a43e4f61f5cabbdcff0b6606d57054f17c1

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e94e96eefb4a9cef470107a8fc667250e5653500ab186d19b8c0a6f60a413b05",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DS",
    "submitted_at": "2018-11-08T18:26:26Z",
    "title_canon_sha256": "991cc411b08d51a1d0f7119ce74ceaab32ac9896316a6f71526e8bda4b7c752b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1811.03592",
    "kind": "arxiv",
    "version": 2
  }
}