Pith Number

pith:DDLLILEJ

pith:2017:DDLLILEJ3QQOUO5XMGOBMLUMKH

not attested not anchored not stored refs pending

Surrogate Lagrangians for Variational Integrators: High Order Convergence with Low Order Schemes

Gerardo De La Torre, Todd Murphey

arxiv:1709.03883 v1 · 2017-09-12 · math.NA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{DDLLILEJ3QQOUO5XMGOBMLUMKH}

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	2026-05-18T00:35:29.109662Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

18d6b42c89dc20ea3bb7619c162e8c51c924ad3490d860a7d61050b957de1710

Aliases

arxiv: 1709.03883 · arxiv_version: 1709.03883v1 · doi: 10.48550/arxiv.1709.03883 · pith_short_12: DDLLILEJ3QQO · pith_short_16: DDLLILEJ3QQOUO5X · pith_short_8: DDLLILEJ

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/DDLLILEJ3QQOUO5XMGOBMLUMKH \
  | 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: 18d6b42c89dc20ea3bb7619c162e8c51c924ad3490d860a7d61050b957de1710

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "30aeb8438ff3cd273e422834cc10d6a6ef3e75ab73ccaff957d330d8d76f3dd4",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2017-09-12T14:51:29Z",
    "title_canon_sha256": "9d5e8de1c6be4fe0b72e1f5ad9d724bd7d0f2ed0e012476e5a6df160e0633815"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1709.03883",
    "kind": "arxiv",
    "version": 1
  }
}