Pith Number

pith:R4IQKAGO

pith:2018:R4IQKAGOSAB4QWHG5XJWRYDNMZ

not attested not anchored not stored refs pending

Spectral methods for testing cluster structure of graphs

Jonathan Tidor, Sandeep Silwal

arxiv:1812.11564 v1 · 2018-12-30 · 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{R4IQKAGOSAB4QWHG5XJWRYDNMZ}

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	2026-05-17T23:57:11.639987Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8f110500ce9003c858e6edd368e06d665febc6ad5a8a99ce0f3042f74a7098c9

Aliases

arxiv: 1812.11564 · arxiv_version: 1812.11564v1 · doi: 10.48550/arxiv.1812.11564 · pith_short_12: R4IQKAGOSAB4 · pith_short_16: R4IQKAGOSAB4QWHG · pith_short_8: R4IQKAGO

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/R4IQKAGOSAB4QWHG5XJWRYDNMZ \
  | 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: 8f110500ce9003c858e6edd368e06d665febc6ad5a8a99ce0f3042f74a7098c9

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5bcf2cfb28cec1bb04f093232633b199740b465cd75375ec69b6a4cfe2dad882",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DS",
    "submitted_at": "2018-12-30T16:08:13Z",
    "title_canon_sha256": "8a3c8b378dd734613b238f67fd24bd10bb1dc66667f5003c730c58df0e900de9"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1812.11564",
    "kind": "arxiv",
    "version": 1
  }
}