Pith Number

pith:VYYFRS65

pith:2014:VYYFRS652XZ674SL45WPDRNU6A

not attested not anchored not stored refs pending

Euler obstruction and Lipschitz-Killing curvatures

Nicolas Dutertre (I2M)

arxiv:1405.6152 v1 · 2014-05-23 · math.AG · 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{VYYFRS652XZ674SL45WPDRNU6A}

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	2026-05-18T02:51:13.965125Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ae3058cbddd5f3eff24be76cf1c5b4f00cd3ea0e303fa616a234138d4d3f8f5a

Aliases

arxiv: 1405.6152 · arxiv_version: 1405.6152v1 · doi: 10.48550/arxiv.1405.6152 · pith_short_12: VYYFRS652XZ6 · pith_short_16: VYYFRS652XZ674SL · pith_short_8: VYYFRS65

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/VYYFRS652XZ674SL45WPDRNU6A \
  | 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: ae3058cbddd5f3eff24be76cf1c5b4f00cd3ea0e303fa616a234138d4d3f8f5a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c7d4d8bfc4878f533fcaacdd4475f9a27ff3500204a29c55498bbdd70ebf2358",
    "cross_cats_sorted": [
      "math.DG"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2014-05-23T18:09:55Z",
    "title_canon_sha256": "138c190c8206c9e3c941179357f2ff41417215ed2586f7cd3d3075a114e56d46"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1405.6152",
    "kind": "arxiv",
    "version": 1
  }
}