Pith Number

pith:CN3W4UYJ

pith:2009:CN3W4UYJ525C6JDEGSTLRSG7DX

not attested not anchored not stored refs pending

On an integrable system of q-difference equations satisfied by the universal characters: its Lax formalism and an application to q-Painleve equations

Teruhisa Tsuda

arxiv:0901.3900 v2 · 2009-01-25 · 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{CN3W4UYJ525C6JDEGSTLRSG7DX}

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	2026-05-18T02:14:55.951494Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

13776e5309eeba2f246434a6b8c8df1de9537128961bd1a048375269ae84d9cb

Aliases

arxiv: 0901.3900 · arxiv_version: 0901.3900v2 · doi: 10.48550/arxiv.0901.3900 · pith_short_12: CN3W4UYJ525C · pith_short_16: CN3W4UYJ525C6JDE · pith_short_8: CN3W4UYJ

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/CN3W4UYJ525C6JDEGSTLRSG7DX \
  | 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: 13776e5309eeba2f246434a6b8c8df1de9537128961bd1a048375269ae84d9cb

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1cae8108aaab35bac49c84493a2ee7290dd9203df8bd5c687c620b1cca3e3adb",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "nlin.SI",
    "submitted_at": "2009-01-25T14:13:58Z",
    "title_canon_sha256": "2065702a9cbbc2dc6d9c05d8eeb96673b3f1db68a2a6320439f118f187a32a4e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0901.3900",
    "kind": "arxiv",
    "version": 2
  }
}