Pith Number

pith:27LVRUJY

pith:2015:27LVRUJYUJV7CAR55KA43QJDRT

not attested not anchored not stored refs pending

On the convexity of the KdV Hamiltonian

Alberto Maspero, Jan-Cornelius Molnar, Peter Topalov, Thomas Kappeler

arxiv:1502.05857 v1 · 2015-02-20 · math.AP

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{27LVRUJYUJV7CAR55KA43QJDRT}

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	2026-05-18T00:35:49.210516Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d7d758d138a26bf1023dea81cdc1238cfcf57ee2c40aa436f2dba53ab35c96e7

Aliases

arxiv: 1502.05857 · arxiv_version: 1502.05857v1 · doi: 10.48550/arxiv.1502.05857 · pith_short_12: 27LVRUJYUJV7 · pith_short_16: 27LVRUJYUJV7CAR5 · pith_short_8: 27LVRUJY

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/27LVRUJYUJV7CAR55KA43QJDRT \
  | 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: d7d758d138a26bf1023dea81cdc1238cfcf57ee2c40aa436f2dba53ab35c96e7

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "94606303fd1f3ca297843268fd7c86f1865dfe260152191a332cd1d00d4477d3",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AP",
    "submitted_at": "2015-02-20T12:45:47Z",
    "title_canon_sha256": "ee207fff5595f202c4af6d28ea33f5d4b25da3ef107e4f52260b47027fb85c99"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1502.05857",
    "kind": "arxiv",
    "version": 1
  }
}