Pith Number

pith:CPPQUIBW

pith:2013:CPPQUIBW2XQ32GRHQ54ZIE2OHZ

not attested not anchored not stored refs pending

Matrix Roots of Eventually Positive Matrices

Judith J. McDonald, Michael J. Tsatsomeros, Pietro Paparella

arxiv:1310.6699 v1 · 2013-10-23 · 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{CPPQUIBW2XQ32GRHQ54ZIE2OHZ}

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	2026-05-18T01:58:27.398753Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

13df0a2036d5e1bd1a27877994134e3e7d6fa9a7c1ac10e71335e83ce80e35a7

Aliases

arxiv: 1310.6699 · arxiv_version: 1310.6699v1 · doi: 10.48550/arxiv.1310.6699 · pith_short_12: CPPQUIBW2XQ3 · pith_short_16: CPPQUIBW2XQ32GRH · pith_short_8: CPPQUIBW

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/CPPQUIBW2XQ32GRHQ54ZIE2OHZ \
  | 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: 13df0a2036d5e1bd1a27877994134e3e7d6fa9a7c1ac10e71335e83ce80e35a7

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9ce4f86b812c35aa3852b135028f2cf44f0788b921844c8b6fb587ed0325fb2f",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.RA",
    "submitted_at": "2013-10-23T00:13:20Z",
    "title_canon_sha256": "7c3a4861b5c9d19ab1c6f7a4e4318e5afd574c27a3f10a2e11a8e69e15f6f754"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1310.6699",
    "kind": "arxiv",
    "version": 1
  }
}