Pith Number

pith:SRYEXFXZ

pith:2009:SRYEXFXZU3EAPPQYWA3YPW34ZY

not attested not anchored not stored refs pending

Geometric study for the Legendre duality of generalized entropies and its application to the porous medium equation

Atsumi Ohara

arxiv:0904.1530 v1 · 2009-04-09 · cond-mat.stat-mech

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{SRYEXFXZU3EAPPQYWA3YPW34ZY}

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	2026-05-18T02:14:06.698546Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

94704b96f9a6c807be18b03787db7cce24ea16222e8fcf7b481cb486e999f724

Aliases

arxiv: 0904.1530 · arxiv_version: 0904.1530v1 · doi: 10.48550/arxiv.0904.1530 · pith_short_12: SRYEXFXZU3EA · pith_short_16: SRYEXFXZU3EAPPQY · pith_short_8: SRYEXFXZ

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/SRYEXFXZU3EAPPQYWA3YPW34ZY \
  | 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: 94704b96f9a6c807be18b03787db7cce24ea16222e8fcf7b481cb486e999f724

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a4dbc844781341fcf94872114fb01ce19024a07116ccd6f4ad49b2aeb1247eaa",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cond-mat.stat-mech",
    "submitted_at": "2009-04-09T13:31:32Z",
    "title_canon_sha256": "69f2365802e934233fd36212c13e0491b1b234cf72e1da34124a372f676bf023"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0904.1530",
    "kind": "arxiv",
    "version": 1
  }
}