Pith Number

pith:2VN3E73C

pith:2014:2VN3E73CHW2QLIRTIFSR5ZW6TX

not attested not anchored not stored refs pending

An Efficient Algorithm for Unweighted Spectral Graph Sparsification

Christopher Melgaard, David G. Anderson, Ming Gu

arxiv:1410.4273 v2 · 2014-10-16 · 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{2VN3E73CHW2QLIRTIFSR5ZW6TX}

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	2026-05-18T02:31:20.513243Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d55bb27f623db505a23341651ee6de9dfcc1d62bcce17b78e1444854bfdfd0c5

Aliases

arxiv: 1410.4273 · arxiv_version: 1410.4273v2 · doi: 10.48550/arxiv.1410.4273 · pith_short_12: 2VN3E73CHW2Q · pith_short_16: 2VN3E73CHW2QLIRT · pith_short_8: 2VN3E73C

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/2VN3E73CHW2QLIRTIFSR5ZW6TX \
  | 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: d55bb27f623db505a23341651ee6de9dfcc1d62bcce17b78e1444854bfdfd0c5

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7b46b1d9d2cbfb62017016addeb1f2dce5d826c4c873c51679c6c51199d24ec4",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DS",
    "submitted_at": "2014-10-16T01:53:01Z",
    "title_canon_sha256": "58e3055912756256fb99c2a7ebeb1c943f87ca06860e1b84c81046920587c9e9"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1410.4273",
    "kind": "arxiv",
    "version": 2
  }
}