Pith Number

pith:D7SAY5T5

pith:2013:D7SAY5T54ET7O4FAHTNPQ3DQ56

not attested not anchored not stored refs pending

Clustering on Multi-Layer Graphs via Subspace Analysis on Grassmann Manifolds

Nikolai Nefedov, Pascal Frossard, Pierre Vandergheynst, Xiaowen Dong

arxiv:1303.2221 v1 · 2013-03-09 · cs.LG · cs.CV · cs.SI · stat.ML

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{D7SAY5T54ET7O4FAHTNPQ3DQ56}

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	2026-05-18T01:34:40.135213Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1fe40c767de127f770a03cdaf86c70efaac1269f27a28dba02cb9409033116c2

Aliases

arxiv: 1303.2221 · arxiv_version: 1303.2221v1 · doi: 10.48550/arxiv.1303.2221 · pith_short_12: D7SAY5T54ET7 · pith_short_16: D7SAY5T54ET7O4FA · pith_short_8: D7SAY5T5

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/D7SAY5T54ET7O4FAHTNPQ3DQ56 \
  | 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: 1fe40c767de127f770a03cdaf86c70efaac1269f27a28dba02cb9409033116c2

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "29fbe0ce6eb101bcdae2ea1dec62922aa7c9a85b1012eb9cf04cf1e24250b533",
    "cross_cats_sorted": [
      "cs.CV",
      "cs.SI",
      "stat.ML"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.LG",
    "submitted_at": "2013-03-09T15:31:48Z",
    "title_canon_sha256": "ed674b55328f59c6f3217a1419fd18a7e5f904e9d3c42999c738607d945d5d34"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1303.2221",
    "kind": "arxiv",
    "version": 1
  }
}