Pith Number

pith:T4WQ7LNO

pith:2019:T4WQ7LNOH7BM5LIKMDI435OAUN

not attested not anchored not stored refs pending

Finding Conformal and Isometric Immersions of Surfaces

Albert Chern, Felix Kn\"oppel, Franz Pedit, Peter Schr\"oder, Ulrich Pinkall

arxiv:1901.09432 v1 · 2019-01-27 · 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{T4WQ7LNOH7BM5LIKMDI435OAUN}

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.

Cited by

1 paper in Pith

Spacetime triple wormhole

Receipt and verification

First computed	2026-05-17T23:55:24.768369Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9f2d0fadae3fc2cead0a60d1cdf5c0a371fa9d39b7626f677fdc53b9aba69724

Aliases

arxiv: 1901.09432 · arxiv_version: 1901.09432v1 · doi: 10.48550/arxiv.1901.09432 · pith_short_12: T4WQ7LNOH7BM · pith_short_16: T4WQ7LNOH7BM5LIK · pith_short_8: T4WQ7LNO

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/T4WQ7LNOH7BM5LIKMDI435OAUN \
  | 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: 9f2d0fadae3fc2cead0a60d1cdf5c0a371fa9d39b7626f677fdc53b9aba69724

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1d89523de3149ac3c5dc377a15d875c8807f641188e034b7cb5afe7fce891444",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.DG",
    "submitted_at": "2019-01-27T20:10:29Z",
    "title_canon_sha256": "9f1722b11014c9b967d5156cabea98e4007932c4a4aa896e2966025c8fe38642"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1901.09432",
    "kind": "arxiv",
    "version": 1
  }
}