Pith Number

pith:Q636FNVP

pith:2010:Q636FNVPNV5RI3YDVKB3P535ZP

not attested not anchored not stored refs pending

A Note on the Jordan Canonical Form

H. Azad

arxiv:1012.2539 v1 · 2010-12-12 · 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{Q636FNVPNV5RI3YDVKB3P535ZP}

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	2026-05-18T04:33:28.382666Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

87b7e2b6af6d7b146f03aa83b7f77dcbf2bb81453cc45f8b340998f3fed8a088

Aliases

arxiv: 1012.2539 · arxiv_version: 1012.2539v1 · doi: 10.48550/arxiv.1012.2539 · pith_short_12: Q636FNVPNV5R · pith_short_16: Q636FNVPNV5RI3YD · pith_short_8: Q636FNVP

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/Q636FNVPNV5RI3YDVKB3P535ZP \
  | 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: 87b7e2b6af6d7b146f03aa83b7f77dcbf2bb81453cc45f8b340998f3fed8a088

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f7c44336a1198aa84ef43549ff5f086d9ab69e5e1539cb03ca3a8d72fa840349",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.RA",
    "submitted_at": "2010-12-12T13:20:29Z",
    "title_canon_sha256": "1dfcae3084c3e5a924096d8293a2a6084b5bdb5f6ac12f6e0c2275615446d71a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1012.2539",
    "kind": "arxiv",
    "version": 1
  }
}