Pith Number

pith:K452IOQ2

pith:2012:K452IOQ2A7AVPF2FR55CDXFOAE

not attested not anchored not stored refs pending

Isophote curves on spacelike surfaces in Lorentz-Minkowski space E31

Fatih Dogan, Yusuf Yayli

arxiv:1203.4388 v2 · 2012-03-20 · 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{K452IOQ2A7AVPF2FR55CDXFOAE}

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	2026-05-18T00:15:05.914145Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

573ba43a1a07c15797458f7a21dcae01363edce4005cfcb9dbab6ace13f52937

Aliases

arxiv: 1203.4388 · arxiv_version: 1203.4388v2 · doi: 10.48550/arxiv.1203.4388 · pith_short_12: K452IOQ2A7AV · pith_short_16: K452IOQ2A7AVPF2F · pith_short_8: K452IOQ2

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/K452IOQ2A7AVPF2FR55CDXFOAE \
  | 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: 573ba43a1a07c15797458f7a21dcae01363edce4005cfcb9dbab6ace13f52937

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c70ea69f4dc460a3d4397468e13bb874d252c0051d3f5e20edbf17d8a9ea8706",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.DG",
    "submitted_at": "2012-03-20T11:06:31Z",
    "title_canon_sha256": "1f0647de7f728e4b04fb6c2f97d0ae106a355d3d680586b5d6804c5dcccff87f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1203.4388",
    "kind": "arxiv",
    "version": 2
  }
}