Pith Number

pith:GCNBO6YL

pith:2007:GCNBO6YLLELK6TDIKEU5YZFPP6

not attested not anchored not stored refs pending

Decomposition of symmetric tensor fields in the presence of a flat contact projective structure

Norbert Poncin, Pierre Mathonet, Yael Fregier

arxiv:math/0703922 v2 · 2007-03-30 · 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{GCNBO6YLLELK6TDIKEU5YZFPP6}

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	2026-05-18T01:38:23.119617Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

309a177b0b5916af4c685129dc64af7fbf9b5aa83862388f55db4b03ccc84426

Aliases

arxiv: math/0703922 · arxiv_version: math/0703922v2 · doi: 10.48550/arxiv.math/0703922 · pith_short_12: GCNBO6YLLELK · pith_short_16: GCNBO6YLLELK6TDI · pith_short_8: GCNBO6YL

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/GCNBO6YLLELK6TDIKEU5YZFPP6 \
  | 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: 309a177b0b5916af4c685129dc64af7fbf9b5aa83862388f55db4b03ccc84426

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3e6907852096a44b0903113d165bab093fc773c1c44ac04995a2b1cf6759f001",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "math.DG",
    "submitted_at": "2007-03-30T14:28:10Z",
    "title_canon_sha256": "2597e845444057850c57ae07f1f64ec1eb40e83f20b1846a0ed2e16bb1d40fc3"
  },
  "schema_version": "1.0",
  "source": {
    "id": "math/0703922",
    "kind": "arxiv",
    "version": 2
  }
}