Pith Number

pith:AMCISQL2

pith:2015:AMCISQL2TDJBF35EG4DUWZHZ52

not attested not anchored not stored refs pending

Interactive certificate for the verification of Wiedemann's Krylov sequence: application to the certification of the determinant, the minimal and the characteristic polynomials of sparse matrices

Emmanuel Thom\'e (CARAMEL), Erich Kaltofen (NCSU), Jean-Guillaume Dumas

arxiv:1507.01083 v1 · 2015-07-04 · cs.SC · cs.CC · cs.CR

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{AMCISQL2TDJBF35EG4DUWZHZ52}

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	2026-05-18T01:37:18.226801Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

030489417a98d212efa437074b64f9eea9157d243a05c12d31f887db4235138d

Aliases

arxiv: 1507.01083 · arxiv_version: 1507.01083v1 · doi: 10.48550/arxiv.1507.01083 · pith_short_12: AMCISQL2TDJB · pith_short_16: AMCISQL2TDJBF35E · pith_short_8: AMCISQL2

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/AMCISQL2TDJBF35EG4DUWZHZ52 \
  | 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: 030489417a98d212efa437074b64f9eea9157d243a05c12d31f887db4235138d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8026277551623a4b2fa10a95fac760724fee7bb1fc8ae6372a13890345758a3b",
    "cross_cats_sorted": [
      "cs.CC",
      "cs.CR"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.SC",
    "submitted_at": "2015-07-04T09:02:37Z",
    "title_canon_sha256": "73cd8bef5405bc4d2745bf5f0b90bf2ecc25a7afc2362363166a75e5035ca7f5"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1507.01083",
    "kind": "arxiv",
    "version": 1
  }
}