Pith Number

pith:F7IATGCP

pith:2013:F7IATGCPM2WWDYOY5LBOO5I2SK

not attested not anchored not stored refs pending

Spectral data and solvent theory for regular matrix polynomials

Edgar Pereira, Nir Cohen

arxiv:1312.6420 v1 · 2013-12-22 · math.SP

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{F7IATGCPM2WWDYOY5LBOO5I2SK}

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	2026-05-18T03:03:58.363438Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2fd009984f66ad61e1d8eac2e7751a92aace27830784f69b0e36b0d366ea11eb

Aliases

arxiv: 1312.6420 · arxiv_version: 1312.6420v1 · doi: 10.48550/arxiv.1312.6420 · pith_short_12: F7IATGCPM2WW · pith_short_16: F7IATGCPM2WWDYOY · pith_short_8: F7IATGCP

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/F7IATGCPM2WWDYOY5LBOO5I2SK \
  | 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: 2fd009984f66ad61e1d8eac2e7751a92aace27830784f69b0e36b0d366ea11eb

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "86442296d377bdffd99b27e8ec3ac33db0bf04d3bdd1f4ed82d90bbb54bfe505",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.SP",
    "submitted_at": "2013-12-22T20:21:55Z",
    "title_canon_sha256": "9d5784925c5af1bd3e92bdef748f259f02a6b581552a558af1de9db4dbad5fed"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1312.6420",
    "kind": "arxiv",
    "version": 1
  }
}