Pith Number

pith:QQSSOQZ2

pith:2014:QQSSOQZ2WGAU2BJG3N4IYEGWOP

not attested not anchored not stored refs pending

The density of uncyclic matrices

Cheryl E. Praeger, S.P. Glasby

arxiv:1405.5631 v1 · 2014-05-22 · math.RA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{QQSSOQZ2WGAU2BJG3N4IYEGWOP}

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	2026-05-18T02:51:16.099784Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

842527433ab1814d0526db788c10d673f7b2610aaa4e82f552357e3d1daf6655

Aliases

arxiv: 1405.5631 · arxiv_version: 1405.5631v1 · doi: 10.48550/arxiv.1405.5631 · pith_short_12: QQSSOQZ2WGAU · pith_short_16: QQSSOQZ2WGAU2BJG · pith_short_8: QQSSOQZ2

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/QQSSOQZ2WGAU2BJG3N4IYEGWOP \
  | 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: 842527433ab1814d0526db788c10d673f7b2610aaa4e82f552357e3d1daf6655

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "bb386c717836cd8808d31c1845090b9e090b68483c4e98df7289cda992c745b1",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.RA",
    "submitted_at": "2014-05-22T05:29:01Z",
    "title_canon_sha256": "3f866ff92c7019e38aa2eaeb0608cfda5edd93de2e34c5d959e0d32a243f4d40"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1405.5631",
    "kind": "arxiv",
    "version": 1
  }
}