Pith Number

pith:FUZYA6YY

pith:2014:FUZYA6YYZ6SB2VTQ55TVPDGE5L

not attested not anchored not stored refs pending

Spectral parameter power series for polynomial pencils of Sturm-Liouville operators and Zakharov-Shabat systems

Sergii M. Torba, Ulises Velasco-Garcia, Vladislav V. Kravchenko

arxiv:1401.1520 v1 · 2014-01-07 · math.CA · math-ph · math.MP · math.NA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{FUZYA6YYZ6SB2VTQ55TVPDGE5L}

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	2026-05-18T01:36:15.687165Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2d33807b18cfa41d5670ef67578cc4eacaf2d136c51f46cac3290f5ee3ade884

Aliases

arxiv: 1401.1520 · arxiv_version: 1401.1520v1 · doi: 10.48550/arxiv.1401.1520 · pith_short_12: FUZYA6YYZ6SB · pith_short_16: FUZYA6YYZ6SB2VTQ · pith_short_8: FUZYA6YY

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/FUZYA6YYZ6SB2VTQ55TVPDGE5L \
  | 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: 2d33807b18cfa41d5670ef67578cc4eacaf2d136c51f46cac3290f5ee3ade884

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "febcc3c34d3af79510b1ace6372393c9211c92db0c7b0a3504feeb90da508020",
    "cross_cats_sorted": [
      "math-ph",
      "math.MP",
      "math.NA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CA",
    "submitted_at": "2014-01-07T21:42:36Z",
    "title_canon_sha256": "2278f899dc6a26356877baa4fb5fdb1f4cadbf1c01bfee5385e05089abea5600"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1401.1520",
    "kind": "arxiv",
    "version": 1
  }
}