Pith Number

pith:YPF4OD5E

pith:2013:YPF4OD5EPRJRK7H7C54KUA65KU

not attested not anchored not stored refs pending

From semi-toric systems to Hamiltonian S^1-spaces

Daniele Sepe, Silvia Sabatini, Sonja Hohloch

arxiv:1305.7040 v1 · 2013-05-30 · math.SG · nlin.SI

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{YPF4OD5EPRJRK7H7C54KUA65KU}

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	2026-05-18T03:22:16.544711Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c3cbc70fa47c53157cff1778aa03dd550e7d15171b3d1d331a5e5fc86b854c49

Aliases

arxiv: 1305.7040 · arxiv_version: 1305.7040v1 · doi: 10.48550/arxiv.1305.7040 · pith_short_12: YPF4OD5EPRJR · pith_short_16: YPF4OD5EPRJRK7H7 · pith_short_8: YPF4OD5E

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/YPF4OD5EPRJRK7H7C54KUA65KU \
  | 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: c3cbc70fa47c53157cff1778aa03dd550e7d15171b3d1d331a5e5fc86b854c49

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "afc7732560e6ce5ac75d284cb3b1602a94b6f8d1b753709307e5e168995b425c",
    "cross_cats_sorted": [
      "nlin.SI"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.SG",
    "submitted_at": "2013-05-30T09:30:35Z",
    "title_canon_sha256": "17940017c87822b9006551a42272b4afde00929b7c4dcc475fe0c52f17570817"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1305.7040",
    "kind": "arxiv",
    "version": 1
  }
}