Pith Number

pith:3JSAHJ4B

pith:2016:3JSAHJ4BUJAYY7CQYYIVHGJ63S

not attested not anchored not stored refs pending

A Distributed $(2+\epsilon)$-Approximation for Vertex Cover in $O(\log{\Delta}/\epsilon\log\log{\Delta})$ Rounds

Gregory Schwartzman, Keren Censor-Hillel, Reuven Bar-Yehuda

arxiv:1602.03713 v2 · 2016-02-11 · cs.DC · 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{3JSAHJ4BUJAYY7CQYYIVHGJ63S}

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	2026-05-18T01:20:55.265210Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

da6403a781a2418c7c50c61153993edcb14fce26b6fe5b98bce757604423ee6b

Aliases

arxiv: 1602.03713 · arxiv_version: 1602.03713v2 · doi: 10.48550/arxiv.1602.03713 · pith_short_12: 3JSAHJ4BUJAY · pith_short_16: 3JSAHJ4BUJAYY7CQ · pith_short_8: 3JSAHJ4B

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/3JSAHJ4BUJAYY7CQYYIVHGJ63S \
  | 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: da6403a781a2418c7c50c61153993edcb14fce26b6fe5b98bce757604423ee6b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7d77e734fa671620a82630d6c92f568cf33d8927ee5e6ae91253d78f1bffd810",
    "cross_cats_sorted": [
      "cs.DS"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DC",
    "submitted_at": "2016-02-11T13:00:04Z",
    "title_canon_sha256": "206b189be1a06ecae67a2e87dac4b900fa19dad79f3c9eb7d0c89043220126f1"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1602.03713",
    "kind": "arxiv",
    "version": 2
  }
}