Pith Number

pith:XLM6MEPL

pith:2015:XLM6MEPLFO4JREI3DCMYJZUNJR

not attested not anchored not stored refs pending

Variational principle for contact Tonelli Hamiltonian systems

Jun Yan, Lin Wang

arxiv:1505.02918 v1 · 2015-05-12 · math.DS · 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{XLM6MEPLFO4JREI3DCMYJZUNJR}

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	2026-05-18T02:14:15.611006Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

bad9e611eb2bb898911b189984e68d4c776b4574af3945c7c3ff11aac7ca1763

Aliases

arxiv: 1505.02918 · arxiv_version: 1505.02918v1 · doi: 10.48550/arxiv.1505.02918 · pith_short_12: XLM6MEPLFO4J · pith_short_16: XLM6MEPLFO4JREI3 · pith_short_8: XLM6MEPL

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/XLM6MEPLFO4JREI3DCMYJZUNJR \
  | 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: bad9e611eb2bb898911b189984e68d4c776b4574af3945c7c3ff11aac7ca1763

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "bfc5fc503e43b665998fe6ddcae977fdd9b8456a6804c97e386e99a55b2b53c4",
    "cross_cats_sorted": [
      "math.AP"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.DS",
    "submitted_at": "2015-05-12T09:13:26Z",
    "title_canon_sha256": "799e331f00086d80b86798aa82e9757d21f54155d0e8ad167dc6c31367d9e817"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1505.02918",
    "kind": "arxiv",
    "version": 1
  }
}