Pith Number

pith:2QLDLVBX

pith:2013:2QLDLVBXBQ5EZFLQ3XMGSKBMMJ

not attested not anchored not stored refs pending

The Fisher-KPP equation with nonlinear fractional diffusion

Diana Stan, Juan Luis V\'azquez

arxiv:1303.6823 v1 · 2013-03-27 · 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{2QLDLVBXBQ5EZFLQ3XMGSKBMMJ}

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	2026-05-18T03:29:39.619354Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d41635d4370c3a4c9570ddd869282c624c326e2e969f8a91e398dbad65b7a8fa

Aliases

arxiv: 1303.6823 · arxiv_version: 1303.6823v1 · doi: 10.48550/arxiv.1303.6823 · pith_short_12: 2QLDLVBXBQ5E · pith_short_16: 2QLDLVBXBQ5EZFLQ · pith_short_8: 2QLDLVBX

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/2QLDLVBXBQ5EZFLQ3XMGSKBMMJ \
  | 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: d41635d4370c3a4c9570ddd869282c624c326e2e969f8a91e398dbad65b7a8fa

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f3546c9f4906ef29eb1d44e1f8994e30e0cd0e487a3417e06e3888d1b896ac24",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AP",
    "submitted_at": "2013-03-27T13:22:13Z",
    "title_canon_sha256": "5bbb8fd4ff18fb0eab3accb18367dd451e357ca16b25d4fcf7409d2f936b9b1d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1303.6823",
    "kind": "arxiv",
    "version": 1
  }
}