Pith Number

pith:H5BU3GHD

pith:2008:H5BU3GHDWMTZL6HO3UIQTWRHV2

not attested not anchored not stored refs pending

Numerical Solution of an Inverse Problem in Size-Structured Population Dynamics

Beno\^it Perthame (INRIA Rocquencourt, Jorge P. Zubelli (UCI), LJLL), Marie Doumic Jauffret (INRIA Rocquencourt)

arxiv:0810.1381 v1 · 2008-10-08 · math.NA · 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{H5BU3GHDWMTZL6HO3UIQTWRHV2}

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	2026-05-18T03:36:06.824579Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3f434d98e3b32795f8eedd1109da27aeb44080da5d81b448957c80cd735add0d

Aliases

arxiv: 0810.1381 · arxiv_version: 0810.1381v1 · doi: 10.48550/arxiv.0810.1381 · pith_short_12: H5BU3GHDWMTZ · pith_short_16: H5BU3GHDWMTZL6HO · pith_short_8: H5BU3GHD

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/H5BU3GHDWMTZL6HO3UIQTWRHV2 \
  | 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: 3f434d98e3b32795f8eedd1109da27aeb44080da5d81b448957c80cd735add0d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8e8b33fdcc91dd417553cd9c6e95a5ed98cff14d84e9d2703e42a54727b5ffc7",
    "cross_cats_sorted": [
      "math.AP"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2008-10-08T08:27:47Z",
    "title_canon_sha256": "8fd28a0097a21e5fefc2a12ef24443b566ffc1e4bf64bbd8ac97db9aef775dbc"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0810.1381",
    "kind": "arxiv",
    "version": 1
  }
}