Pith Number

pith:5WMZYANA

pith:2012:5WMZYANA5PBAJMX4HGGA7YOF6B

not attested not anchored not stored refs pending

Two cores of a nonnegative matrix

Bit-Shun Tam, Hans Schneider, Peter Butkovic, Sergei Sergeev

arxiv:1208.1939 v3 · 2012-08-09 · 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{5WMZYANA5PBAJMX4HGGA7YOF6B}

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	2026-05-18T03:02:17.883828Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ed999c01a0ebc204b2fc398c0fe1c5f04bbdf2cc33072e7af543a0396a31f0a1

Aliases

arxiv: 1208.1939 · arxiv_version: 1208.1939v3 · doi: 10.48550/arxiv.1208.1939 · pith_short_12: 5WMZYANA5PBA · pith_short_16: 5WMZYANA5PBAJMX4 · pith_short_8: 5WMZYANA

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/5WMZYANA5PBAJMX4HGGA7YOF6B \
  | 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: ed999c01a0ebc204b2fc398c0fe1c5f04bbdf2cc33072e7af543a0396a31f0a1

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "19e78cc5ece1d2c37705259d8ea71ddb1f52d86a81734df6f5b145b87291e3f6",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.RA",
    "submitted_at": "2012-08-09T15:00:05Z",
    "title_canon_sha256": "292bf396b6b770675d1f27e66c2ef1a1e4b0111c8ea9fd3a7fb6117746aebdcc"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1208.1939",
    "kind": "arxiv",
    "version": 3
  }
}