Pith Number

pith:F66SALIV

pith:2009:F66SALIV74E3V543F4ZF37C7CU

not attested not anchored not stored refs pending

On the integrability of symplectic Monge-Amp\'ere equations

B. Doubrov, E.V. Ferapontov

arxiv:0910.3407 v2 · 2009-10-18 · math.DG · 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{F66SALIV74E3V543F4ZF37C7CU}

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	2026-05-18T02:11:14.531792Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2fbd202d15ff09baf79b2f325dfc5f15223924bdf0fe999b74ae036ab8251fd6

Aliases

arxiv: 0910.3407 · arxiv_version: 0910.3407v2 · doi: 10.48550/arxiv.0910.3407 · pith_short_12: F66SALIV74E3 · pith_short_16: F66SALIV74E3V543 · pith_short_8: F66SALIV

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/F66SALIV74E3V543F4ZF37C7CU \
  | 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: 2fbd202d15ff09baf79b2f325dfc5f15223924bdf0fe999b74ae036ab8251fd6

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "caacb1a42506fed7c8343b95edfab40cd4251afeed80b5c3d63e89fd780b01bb",
    "cross_cats_sorted": [
      "nlin.SI"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.DG",
    "submitted_at": "2009-10-18T19:42:10Z",
    "title_canon_sha256": "513b803cbd528a26ff3ed9f8d8a8de0d1b579942c686cab8a5a82020d7247fa6"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0910.3407",
    "kind": "arxiv",
    "version": 2
  }
}