Pith Number

pith:HE4LPLRG

pith:2015:HE4LPLRGYINY36YGDJORWSDTZZ

not attested not anchored not stored refs pending

Nonlinear system identification employing automatic differentiation

Jan Schumann-Bischoff, Stefan Luther, Ulrich Parlitz

arxiv:1507.02543 v1 · 2015-07-09 · nlin.CD

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{HE4LPLRGYINY36YGDJORWSDTZZ}

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	2026-05-18T01:37:06.407140Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3938b7ae26c21b8dfb061a5d1b4873ce6f373c1225c89f881ed3a417e00b7fe8

Aliases

arxiv: 1507.02543 · arxiv_version: 1507.02543v1 · doi: 10.48550/arxiv.1507.02543 · pith_short_12: HE4LPLRGYINY · pith_short_16: HE4LPLRGYINY36YG · pith_short_8: HE4LPLRG

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/HE4LPLRGYINY36YGDJORWSDTZZ \
  | 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: 3938b7ae26c21b8dfb061a5d1b4873ce6f373c1225c89f881ed3a417e00b7fe8

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d8ff1fddd2702a35592f9b70c047fc311e7a2d4f584fc9d5b455f4860d6c9971",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "nlin.CD",
    "submitted_at": "2015-07-09T15:02:37Z",
    "title_canon_sha256": "3bf550471725ec493f7d3522106c060dcaffca8ae11db55cb514b65e89cc68bb"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1507.02543",
    "kind": "arxiv",
    "version": 1
  }
}