Pith Number

pith:U74DBAVX

pith:2013:U74DBAVXIKSWGSRZ6XFQGOTEHU

not attested not anchored not stored refs pending

Radial propagation in population dynamics with density-dependent diffusion

Waipot Ngamsaad

arxiv:1305.2340 v2 · 2013-05-10 · physics.bio-ph · q-bio.PE

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{U74DBAVXIKSWGSRZ6XFQGOTEHU}

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	2026-05-18T03:02:07.380226Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a7f83082b742a5634a39f5cb033a643d0fb60d9bd771d0da858c9400219aa1cb

Aliases

arxiv: 1305.2340 · arxiv_version: 1305.2340v2 · doi: 10.48550/arxiv.1305.2340 · pith_short_12: U74DBAVXIKSW · pith_short_16: U74DBAVXIKSWGSRZ · pith_short_8: U74DBAVX

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/U74DBAVXIKSWGSRZ6XFQGOTEHU \
  | 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: a7f83082b742a5634a39f5cb033a643d0fb60d9bd771d0da858c9400219aa1cb

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7f411e2d6b44366e13c2e0cb1234b6170ca488ca5133ab88352c816a64d06cbf",
    "cross_cats_sorted": [
      "q-bio.PE"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.bio-ph",
    "submitted_at": "2013-05-10T13:44:32Z",
    "title_canon_sha256": "882c6a126956af50ec2d69c303e17cd206349c9920084a493267c4fc5afa76b4"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1305.2340",
    "kind": "arxiv",
    "version": 2
  }
}