Pith Number

pith:PY3QE7VA

pith:2014:PY3QE7VANC46XINTCJZQ7H2NYT

not attested not anchored not stored refs pending

Spinor representation of Lorentzian surfaces in R^{2,2}

Pierre Bayard, Victor Patty

arxiv:1410.7313 v2 · 2014-10-27 · 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{PY3QE7VANC46XINTCJZQ7H2NYT}

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	2026-05-18T01:25:02.775878Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7e37027ea068b9eba1b312730f9f4dc4cb971fed968e8bad1ec9c149554114b6

Aliases

arxiv: 1410.7313 · arxiv_version: 1410.7313v2 · doi: 10.48550/arxiv.1410.7313 · pith_short_12: PY3QE7VANC46 · pith_short_16: PY3QE7VANC46XINT · pith_short_8: PY3QE7VA

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/PY3QE7VANC46XINTCJZQ7H2NYT \
  | 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: 7e37027ea068b9eba1b312730f9f4dc4cb971fed968e8bad1ec9c149554114b6

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e10a77d86c2b32b46a244498c48628a8d86c9e17af00488674122cdce07f9171",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.DG",
    "submitted_at": "2014-10-27T17:10:41Z",
    "title_canon_sha256": "c2f5e619dd61d4e5aa85f691395c801b58c1b0c444fad75c6f72555576bfc7fa"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1410.7313",
    "kind": "arxiv",
    "version": 2
  }
}