Pith Number

pith:RNRA32QQ

pith:2008:RNRA32QQU5FV242VYMN7UQGM72

not attested not anchored not stored refs pending

Dirac structures, nonholonomic systems and reduction

Madeleine Jotz, Tudor Ratiu

arxiv:0806.1261 v4 · 2008-06-07 · math.DG

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{RNRA32QQU5FV242VYMN7UQGM72}

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	2026-05-18T04:11:06.259790Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8b620dea10a74b5d7355c31bfa40ccfeb2cc26df4643d7907e81d23f2a4a4e61

Aliases

arxiv: 0806.1261 · arxiv_version: 0806.1261v4 · doi: 10.48550/arxiv.0806.1261 · pith_short_12: RNRA32QQU5FV · pith_short_16: RNRA32QQU5FV242V · pith_short_8: RNRA32QQ

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/RNRA32QQU5FV242VYMN7UQGM72 \
  | 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: 8b620dea10a74b5d7355c31bfa40ccfeb2cc26df4643d7907e81d23f2a4a4e61

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "332632ce60ae58aa89c3b3b29f0665fdd4d06e826608e196a389ba3fa915584e",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.DG",
    "submitted_at": "2008-06-07T05:15:42Z",
    "title_canon_sha256": "89fc9aac28b9aaaf09ad2b49d082e7c7f6fea94fa469dd247dc0d3c5abd44edf"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0806.1261",
    "kind": "arxiv",
    "version": 4
  }
}