Pith Number

pith:VVY7HG4F

pith:2016:VVY7HG4FEJX2D5HFNW32HFGXTN

not attested not anchored not stored refs pending

Group classification of linear evolution equations

Alexander Bihlo, Roman O. Popovych

arxiv:1605.09251 v3 · 2016-05-30 · math-ph · math.AP · math.MP

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{VVY7HG4FEJX2D5HFNW32HFGXTN}

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	2026-05-18T00:38:32.149066Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ad71f39b85226fa1f4e56db7a394d79b75a52cc372c7c1de6439f762b2222c18

Aliases

arxiv: 1605.09251 · arxiv_version: 1605.09251v3 · doi: 10.48550/arxiv.1605.09251 · pith_short_12: VVY7HG4FEJX2 · pith_short_16: VVY7HG4FEJX2D5HF · pith_short_8: VVY7HG4F

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/VVY7HG4FEJX2D5HFNW32HFGXTN \
  | 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: ad71f39b85226fa1f4e56db7a394d79b75a52cc372c7c1de6439f762b2222c18

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d7b3fe06d259a538c8db0551a64f91addc6e94f2f68de6da0e631713e26625d2",
    "cross_cats_sorted": [
      "math.AP",
      "math.MP"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math-ph",
    "submitted_at": "2016-05-30T14:29:50Z",
    "title_canon_sha256": "227fa785ef712935db043b9372c364b105c514aa81bb1405dff9af27432241e2"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1605.09251",
    "kind": "arxiv",
    "version": 3
  }
}