Pith Number

pith:F4OCD4DN

pith:2009:F4OCD4DNSXXGHFPSJLLLGRKG55

not attested not anchored not stored refs pending

Symmetry Classification for the Nonlinear Heat Conductivity Equation

Ali Mahdipour-Shirayeh

arxiv:0909.3727 v2 · 2009-09-21 · math.DG · 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{F4OCD4DNSXXGHFPSJLLLGRKG55}

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	2026-05-18T04:05:46.117564Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2f1c21f06d95ee6395f24ad6b34546ef67a88c2bf0da43e06a78741e36f61ec5

Aliases

arxiv: 0909.3727 · arxiv_version: 0909.3727v2 · doi: 10.48550/arxiv.0909.3727 · pith_short_12: F4OCD4DNSXXG · pith_short_16: F4OCD4DNSXXGHFPS · pith_short_8: F4OCD4DN

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/F4OCD4DNSXXGHFPSJLLLGRKG55 \
  | 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: 2f1c21f06d95ee6395f24ad6b34546ef67a88c2bf0da43e06a78741e36f61ec5

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9c48400d082dcb8965889608f23f6f0cbc4a80c64e4312e721a0c46aed6776ce",
    "cross_cats_sorted": [
      "math.AP"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.DG",
    "submitted_at": "2009-09-21T10:11:47Z",
    "title_canon_sha256": "e93a878cc3bc645e9c50ec5eeac3cee06bea9300624405fb6c0a3fcd067b5723"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0909.3727",
    "kind": "arxiv",
    "version": 2
  }
}