Pith Number

pith:BY6Y7UQH

pith:2017:BY6Y7UQH2QRUICJUOYITKZJMPZ

not attested not anchored not stored refs pending

Counting Quasi-Idempotent Irreducible Integral Matrices

Erik Th\"ornblad, Jakob Zimmermann

arxiv:1701.03699 v3 · 2017-01-13 · math.CO · math.RT

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{BY6Y7UQH2QRUICJUOYITKZJMPZ}

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	2026-05-18T00:16:19.572733Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0e3d8fd207d423440934761135652c7e4f602e446edd5fa7e3087ee9130c5c3a

Aliases

arxiv: 1701.03699 · arxiv_version: 1701.03699v3 · doi: 10.48550/arxiv.1701.03699 · pith_short_12: BY6Y7UQH2QRU · pith_short_16: BY6Y7UQH2QRUICJU · pith_short_8: BY6Y7UQH

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/BY6Y7UQH2QRUICJUOYITKZJMPZ \
  | 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: 0e3d8fd207d423440934761135652c7e4f602e446edd5fa7e3087ee9130c5c3a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "76483b7a28ea8e69f50e4b11ffd324a81811a497c38242ebf4674cdebfc13dee",
    "cross_cats_sorted": [
      "math.RT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2017-01-13T15:16:10Z",
    "title_canon_sha256": "54371a3dafb48dfafda215c8ab6ad6d2de8e93ca5a9d378f2b6d46cbcd88c6bf"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1701.03699",
    "kind": "arxiv",
    "version": 3
  }
}