Pith Number

pith:FJZQ4SD6

pith:2011:FJZQ4SD6UBUAMHKOUSNMZIP4TV

not attested not anchored not stored refs pending

Riemann--Hilbert problems, matrix orthogonal polynomials and discrete matrix equations with singularity confinement

Giovanni A. Cassatella-Contra, Manuel Manas

arxiv:1106.0036 v1 · 2011-05-31 · math.CA · math-ph · math.MP · nlin.SI

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{FJZQ4SD6UBUAMHKOUSNMZIP4TV}

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	2026-05-18T03:07:55.123306Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2a730e487ea068061d4ea49acca1fc9d7820225d45e5049ef4a331ee317cea9d

Aliases

arxiv: 1106.0036 · arxiv_version: 1106.0036v1 · doi: 10.48550/arxiv.1106.0036 · pith_short_12: FJZQ4SD6UBUA · pith_short_16: FJZQ4SD6UBUAMHKO · pith_short_8: FJZQ4SD6

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/FJZQ4SD6UBUAMHKOUSNMZIP4TV \
  | 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: 2a730e487ea068061d4ea49acca1fc9d7820225d45e5049ef4a331ee317cea9d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d0b742774e7fb33623980bb28b9cef4c0c3669b25dc505a3a24dbc48a9129f4e",
    "cross_cats_sorted": [
      "math-ph",
      "math.MP",
      "nlin.SI"
    ],
    "license": "http://creativecommons.org/licenses/by/3.0/",
    "primary_cat": "math.CA",
    "submitted_at": "2011-05-31T21:47:35Z",
    "title_canon_sha256": "1f644c6985a44cf6c7f0f617a436d6a9c1493ee40c8e6d0c8f4b8648779606b3"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1106.0036",
    "kind": "arxiv",
    "version": 1
  }
}