Pith Number

pith:HW2TBTNL

pith:2018:HW2TBTNLBCCZ27V7OIVACO7MFC

not attested not anchored not stored refs pending

Lax representations with non-removable parameter and exotic cohomology of symmetry algebras of PDEs

Oleg I. Morozov

arxiv:1812.03338 v1 · 2018-12-08 · 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{HW2TBTNLBCCZ27V7OIVACO7MFC}

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	2026-05-17T23:58:46.488162Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3db530cdab08859d7ebf722a013bec2888d253832a81d971c7d608c6cf1109f6

Aliases

arxiv: 1812.03338 · arxiv_version: 1812.03338v1 · doi: 10.48550/arxiv.1812.03338 · pith_short_12: HW2TBTNLBCCZ · pith_short_16: HW2TBTNLBCCZ27V7 · pith_short_8: HW2TBTNL

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/HW2TBTNLBCCZ27V7OIVACO7MFC \
  | 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: 3db530cdab08859d7ebf722a013bec2888d253832a81d971c7d608c6cf1109f6

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b24070608739b7d7cb475164ac66863f3eecfd4fbe67a900b1b4e5e2cf85b13e",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "nlin.SI",
    "submitted_at": "2018-12-08T15:31:37Z",
    "title_canon_sha256": "396f83ef75a3ff55b6af9441e981ea54c6c6bee649332dffe840ccce44db8e3c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1812.03338",
    "kind": "arxiv",
    "version": 1
  }
}