Pith Number

pith:NTA2ZQVL

pith:2018:NTA2ZQVL2IBFCO4ENHP2CZT7PZ

not attested not anchored not stored refs pending

Poisson pencils: reduction, exactness, and invariants

Andrea Raimondo, Marco Pedroni, Paolo Lorenzoni

arxiv:1811.11830 v2 · 2018-11-28 · math-ph · math.MP

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{NTA2ZQVL2IBFCO4ENHP2CZT7PZ}

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	2026-05-17T23:54:33.991467Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6cc1acc2abd202513b8469dfa1667f7e6e10443a14edcd60e4e6c4dbdfd3e08b

Aliases

arxiv: 1811.11830 · arxiv_version: 1811.11830v2 · doi: 10.48550/arxiv.1811.11830 · pith_short_12: NTA2ZQVL2IBF · pith_short_16: NTA2ZQVL2IBFCO4E · pith_short_8: NTA2ZQVL

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/NTA2ZQVL2IBFCO4ENHP2CZT7PZ \
  | 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: 6cc1acc2abd202513b8469dfa1667f7e6e10443a14edcd60e4e6c4dbdfd3e08b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c15c95268fc0dc9edd03e7fa75195302868e732b555fffd3427c9a2d8689318e",
    "cross_cats_sorted": [
      "math.MP"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math-ph",
    "submitted_at": "2018-11-28T20:58:56Z",
    "title_canon_sha256": "d9b59dcea8ed68c9440d0d5501e3ba4977e4f3a4d5cc9f35cc5190fa77345fc6"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1811.11830",
    "kind": "arxiv",
    "version": 2
  }
}