Pith Number

pith:N5U6MDE5

pith:2012:N5U6MDE5EJRBAPQZEDY5KUOTFK

not attested not anchored not stored refs pending

Spectral Variational Integrators

James Hall, Melvin Leok

arxiv:1211.4534 v1 · 2012-11-19 · 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{N5U6MDE5EJRBAPQZEDY5KUOTFK}

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	2026-05-18T03:40:26.603308Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6f69e60c9d2262103e1920f1d551d32aa115c4eed55f9e7b6494c86cde7694cf

Aliases

arxiv: 1211.4534 · arxiv_version: 1211.4534v1 · doi: 10.48550/arxiv.1211.4534 · pith_short_12: N5U6MDE5EJRB · pith_short_16: N5U6MDE5EJRBAPQZ · pith_short_8: N5U6MDE5

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/N5U6MDE5EJRBAPQZEDY5KUOTFK \
  | 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: 6f69e60c9d2262103e1920f1d551d32aa115c4eed55f9e7b6494c86cde7694cf

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "87b8656664514934371c5924a6bbb85d43d65f19effb3a01d7ddaceef507cadd",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2012-11-19T18:53:31Z",
    "title_canon_sha256": "7bf70fb077421042b9d3878214d1d7cf449baa6f22826f8e519a5c29f4eb9fb0"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1211.4534",
    "kind": "arxiv",
    "version": 1
  }
}