Pith Number

pith:NJ237GOH

pith:2011:NJ237GOHBGQZAVPNY72I5LBQWL

not attested not anchored not stored refs pending

A Variational Approach to Parameter Estimation in Ordinary Differential Equations

Daniel Kaschek, Jens Timmer

arxiv:1110.1516 v2 · 2011-10-07 · q-bio.MN · q-bio.QM

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{NJ237GOHBGQZAVPNY72I5LBQWL}

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	2026-05-18T03:51:47.264194Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6a75bf99c709a19055edc7f48eac30b2e3b0634af117cc36f6aac6ae79ced9f3

Aliases

arxiv: 1110.1516 · arxiv_version: 1110.1516v2 · doi: 10.48550/arxiv.1110.1516 · pith_short_12: NJ237GOHBGQZ · pith_short_16: NJ237GOHBGQZAVPN · pith_short_8: NJ237GOH

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/NJ237GOHBGQZAVPNY72I5LBQWL \
  | 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: 6a75bf99c709a19055edc7f48eac30b2e3b0634af117cc36f6aac6ae79ced9f3

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b530341bdd8c745a66712f51d619e6d998ea1b3a3d036a1623233f372718120f",
    "cross_cats_sorted": [
      "q-bio.QM"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "q-bio.MN",
    "submitted_at": "2011-10-07T13:05:35Z",
    "title_canon_sha256": "161ed99843f2390ef098215f16ac2ee055a1ef1867b1279238e8a8c21aae93a1"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1110.1516",
    "kind": "arxiv",
    "version": 2
  }
}