Pith Number

pith:AXHA2Q2A

pith:2009:AXHA2Q2AN76HWKFECWILLDUD7C

not attested not anchored not stored refs pending

Natural connections for semi-Hamiltonian systems: The case of the $\epsilon$-system

Marco Pedroni, Paolo Lorenzoni

arxiv:0912.3697 v3 · 2009-12-18 · nlin.SI · math.DG

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{AXHA2Q2AN76HWKFECWILLDUD7C}

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	2026-05-18T04:21:51.797584Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

05ce0d43406ffc7b28a41590b58e83f8928bdbd38445ed0c77b12422568a74ae

Aliases

arxiv: 0912.3697 · arxiv_version: 0912.3697v3 · doi: 10.48550/arxiv.0912.3697 · pith_short_12: AXHA2Q2AN76H · pith_short_16: AXHA2Q2AN76HWKFE · pith_short_8: AXHA2Q2A

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/AXHA2Q2AN76HWKFECWILLDUD7C \
  | 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: 05ce0d43406ffc7b28a41590b58e83f8928bdbd38445ed0c77b12422568a74ae

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "02f69c3a5ddd59721eb72f00ef72381853473d2937cdd6042029da762ea5e5e1",
    "cross_cats_sorted": [
      "math.DG"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "nlin.SI",
    "submitted_at": "2009-12-18T15:04:06Z",
    "title_canon_sha256": "70f0dd1af9d1eb61f2fe9079aa365c775109de55381b720de7c678c4534689f2"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0912.3697",
    "kind": "arxiv",
    "version": 3
  }
}