Pith Number

pith:EY7R35G3

pith:2009:EY7R35G3V776F62TYIPISBULKM

not attested not anchored not stored refs pending

Uniform convergence of discrete curvatures from nets of curvature lines

Konrad Polthier, Max Wardetzky, Ulrich Bauer

arxiv:0901.2822 v2 · 2009-01-19 · 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{EY7R35G3V776F62TYIPISBULKM}

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	2026-05-18T02:16:51.713267Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

263f1df4dbafffe2fb53c21e89068b530074c4e7defee219c615e29e3bb147cd

Aliases

arxiv: 0901.2822 · arxiv_version: 0901.2822v2 · doi: 10.48550/arxiv.0901.2822 · pith_short_12: EY7R35G3V776 · pith_short_16: EY7R35G3V776F62T · pith_short_8: EY7R35G3

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/EY7R35G3V776F62TYIPISBULKM \
  | 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: 263f1df4dbafffe2fb53c21e89068b530074c4e7defee219c615e29e3bb147cd

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f82c6df60c76b688db1a45e74001d63ce90c497c0007b7ef26d17846dd2d1830",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.DG",
    "submitted_at": "2009-01-19T12:56:16Z",
    "title_canon_sha256": "684e4417f1324aac9a0e76742807d8b6b1b5d79d0441417b3f342a1fb3398584"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0901.2822",
    "kind": "arxiv",
    "version": 2
  }
}