Pith Number

pith:EIRSYZNS

pith:2002:EIRSYZNSCJGTZF5NQTGZ6VFXEB

not attested not anchored not stored refs pending

A tree of linearisable second-order evolution equations by generalised hodograph transformations

Marianna Euler, Norbert Euler

arxiv:nlin/0201040 v2 · 2002-01-21 · nlin.SI · math.AP

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{EIRSYZNSCJGTZF5NQTGZ6VFXEB}

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	2026-05-18T01:04:16.205065Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

22232c65b2124d3c97ad84cd9f54b72063b95463350e267c20f017e015404605

Aliases

arxiv: nlin/0201040 · arxiv_version: nlin/0201040v2 · doi: 10.48550/arxiv.nlin/0201040 · pith_short_12: EIRSYZNSCJGT · pith_short_16: EIRSYZNSCJGTZF5N · pith_short_8: EIRSYZNS

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/EIRSYZNSCJGTZF5NQTGZ6VFXEB \
  | 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: 22232c65b2124d3c97ad84cd9f54b72063b95463350e267c20f017e015404605

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "fa8a935618212305b1439eb1a7cbf233e164989a41988f217de00eb501e7e31f",
    "cross_cats_sorted": [
      "math.AP"
    ],
    "license": "",
    "primary_cat": "nlin.SI",
    "submitted_at": "2002-01-21T21:31:58Z",
    "title_canon_sha256": "ce6e4500c06f70491a8a4b582496a981e26f407d10afb5607223af530ccfd37c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "nlin/0201040",
    "kind": "arxiv",
    "version": 2
  }
}