Pith Number

pith:5OBMCMR2

pith:2017:5OBMCMR24AVBZ572K3HWXW4UUD

not attested not anchored not stored refs pending

PQSER: A Matlab package for spectral seriation

Anna Concas, Caterina Fenu, Giuseppe Rodriguez

arxiv:1711.05677 v2 · 2017-11-15 · cs.MS

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{5OBMCMR24AVBZ572K3HWXW4UUD}

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	2026-05-18T00:29:45.230163Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

eb82c1323ae02a1cf7fa56cf6bdb94a0f4dd5c94b525384241542a9afbbfef73

Aliases

arxiv: 1711.05677 · arxiv_version: 1711.05677v2 · doi: 10.48550/arxiv.1711.05677 · pith_short_12: 5OBMCMR24AVB · pith_short_16: 5OBMCMR24AVBZ572 · pith_short_8: 5OBMCMR2

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/5OBMCMR24AVBZ572K3HWXW4UUD \
  | 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: eb82c1323ae02a1cf7fa56cf6bdb94a0f4dd5c94b525384241542a9afbbfef73

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3e1d644a5e02d9390f130de1d0ddf4793baad7dad46c6cc426fca92a752518e3",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.MS",
    "submitted_at": "2017-11-15T17:13:36Z",
    "title_canon_sha256": "68bc3da81fe924b5913860cdb679fb63044ddbe3f1fa60b5bb9ac8c7bf425ebc"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1711.05677",
    "kind": "arxiv",
    "version": 2
  }
}