Pith Number

pith:FKEIUJDW

pith:2018:FKEIUJDWFGP3PNOHKF66ZSQ5EK

not attested not anchored not stored refs pending

Generalized Port-Hamiltonian DAE Systems

Arjan van der Schaft, Bernhard Maschke

arxiv:1808.01845 v1 · 2018-08-06 · math.OC

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{FKEIUJDWFGP3PNOHKF66ZSQ5EK}

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	2026-05-18T00:08:49.482633Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2a888a2476299fb7b5c7517decca1d2288788c7d5c91580d394252e6ad1e36ec

Aliases

arxiv: 1808.01845 · arxiv_version: 1808.01845v1 · doi: 10.48550/arxiv.1808.01845 · pith_short_12: FKEIUJDWFGP3 · pith_short_16: FKEIUJDWFGP3PNOH · pith_short_8: FKEIUJDW

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/FKEIUJDWFGP3PNOHKF66ZSQ5EK \
  | 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: 2a888a2476299fb7b5c7517decca1d2288788c7d5c91580d394252e6ad1e36ec

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "66bce61d95428e1a2b3ff04b1ed8d21b29ac3e9e7ba44a939f622e600abf5a6e",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.OC",
    "submitted_at": "2018-08-06T12:26:03Z",
    "title_canon_sha256": "dea982bd3ee00f517d6a84d2c4bd148cf4ce3488d93c2019ef98f7be3914f2bf"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1808.01845",
    "kind": "arxiv",
    "version": 1
  }
}