Pith Number

pith:FDQHDSKB

pith:2015:FDQHDSKBIJRNEQTB3ZPNRPBFNE

not attested not anchored not stored refs pending

Bi-Hamiltonian structures of Toda type systems

Charalampos A. Evripidou

arxiv:1504.07531 v1 · 2015-04-28 · 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{FDQHDSKBIJRNEQTB3ZPNRPBFNE}

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	2026-05-18T02:17:34.484343Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

28e071c9414262d24261de5ed8bc2569336fb7a3c2cc1cd4727eb3ac60803870

Aliases

arxiv: 1504.07531 · arxiv_version: 1504.07531v1 · doi: 10.48550/arxiv.1504.07531 · pith_short_12: FDQHDSKBIJRN · pith_short_16: FDQHDSKBIJRNEQTB · pith_short_8: FDQHDSKB

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/FDQHDSKBIJRNEQTB3ZPNRPBFNE \
  | 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: 28e071c9414262d24261de5ed8bc2569336fb7a3c2cc1cd4727eb3ac60803870

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "26778c30ed520fd95eb4b380bc8ac747c99024f93a2dfa125ce1d5dda65d12ff",
    "cross_cats_sorted": [
      "math.MP"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math-ph",
    "submitted_at": "2015-04-28T15:40:04Z",
    "title_canon_sha256": "d6a1c6ab035783bd4664587d001b5b0dbed7d670a2f86d3b19dd9b951c7fc1ba"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1504.07531",
    "kind": "arxiv",
    "version": 1
  }
}