Pith Number

pith:KRJ2EN7M

pith:2015:KRJ2EN7MWSMDFQBN3N7HSXWUJ3

not attested not anchored not stored refs pending

On Lorentzian surfaces in $\mathbb{R}^{2,2}$

Federico S\'anchez-Bringas, Pierre Bayard, Victor Patty

arxiv:1503.06225 v1 · 2015-03-20 · 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{KRJ2EN7MWSMDFQBN3N7HSXWUJ3}

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	2026-05-18T02:20:39.032621Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

5453a237ecb49832c02ddb7e795ed44ec5b95a2d26ca035ad7c927fd5563b55d

Aliases

arxiv: 1503.06225 · arxiv_version: 1503.06225v1 · doi: 10.48550/arxiv.1503.06225 · pith_short_12: KRJ2EN7MWSMD · pith_short_16: KRJ2EN7MWSMDFQBN · pith_short_8: KRJ2EN7M

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/KRJ2EN7MWSMDFQBN3N7HSXWUJ3 \
  | 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: 5453a237ecb49832c02ddb7e795ed44ec5b95a2d26ca035ad7c927fd5563b55d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e7f2006336def8933a29a551998d753e447506a8acbbe3e3de9ceeca5ca04172",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.DG",
    "submitted_at": "2015-03-20T20:18:11Z",
    "title_canon_sha256": "93d0009cacce15319146bed82064d3b1778d549053c9410586cfc564c969c97b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1503.06225",
    "kind": "arxiv",
    "version": 1
  }
}