Pith Number

pith:RWQLO7ZZ

pith:2014:RWQLO7ZZ7SCSVQ5VOJORNRCTRK

not attested not anchored not stored refs pending

Vertex Cover Gets Faster and Harder on Low Degree Graphs

Akanksha Agrawal, Neeldhara Misra, Sathish Govindarajan

arxiv:1404.5566 v2 · 2014-04-21 · 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{RWQLO7ZZ7SCSVQ5VOJORNRCTRK}

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	2026-05-18T02:53:28.357992Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8da0b77f39fc852ac3b5725d16c4538a99f8e3d2ef8d206ef4c53ba6b864a2a8

Aliases

arxiv: 1404.5566 · arxiv_version: 1404.5566v2 · doi: 10.48550/arxiv.1404.5566 · pith_short_12: RWQLO7ZZ7SCS · pith_short_16: RWQLO7ZZ7SCSVQ5V · pith_short_8: RWQLO7ZZ

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/RWQLO7ZZ7SCSVQ5VOJORNRCTRK \
  | 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: 8da0b77f39fc852ac3b5725d16c4538a99f8e3d2ef8d206ef4c53ba6b864a2a8

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b5f517e2dc55e8fb0ad769ea4e0a67fbc2f94b42c47ab3b06a85443b6c1d0e4e",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DS",
    "submitted_at": "2014-04-21T19:16:51Z",
    "title_canon_sha256": "db8399e714adda114fbd138f53e6ea58a5b2bb5de4a3a0c8178fcb3871af6ded"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1404.5566",
    "kind": "arxiv",
    "version": 2
  }
}