Pith Number

pith:KL3QQD63

pith:2009:KL3QQD63HUK6P6YGS5NYUF6BKY

not attested not anchored not stored refs pending

Nonlinear diffusion with a bounded stationary level surface

Rolando Magnanini, Shigeru Sakaguchi

arxiv:0902.1929 v1 · 2009-02-11 · 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{KL3QQD63HUK6P6YGS5NYUF6BKY}

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	2026-05-18T02:14:48.306568Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

52f7080fdb3d15e7fb06975b8a17c156214e86473f95ee01baaead23dc0a3062

Aliases

arxiv: 0902.1929 · arxiv_version: 0902.1929v1 · doi: 10.48550/arxiv.0902.1929 · pith_short_12: KL3QQD63HUK6 · pith_short_16: KL3QQD63HUK6P6YG · pith_short_8: KL3QQD63

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/KL3QQD63HUK6P6YGS5NYUF6BKY \
  | 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: 52f7080fdb3d15e7fb06975b8a17c156214e86473f95ee01baaead23dc0a3062

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "559d0c575b386709f2295b6904b574a166ea88f801de3592eea31214642c1835",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AP",
    "submitted_at": "2009-02-11T16:24:35Z",
    "title_canon_sha256": "572d62442c81f14dcaa3ec1e021b750d05bed7ffde7cca10d3668bba8b045490"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0902.1929",
    "kind": "arxiv",
    "version": 1
  }
}