Pith Number

pith:5P3DDNOU

pith:2010:5P3DDNOU4AZH6YIGONVE5XK5SK

not attested not anchored not stored refs pending

The Geometric Cauchy Problem for Surfaces With Lorentzian Harmonic Gauss maps

David Brander, Martin Svensson

arxiv:1009.5661 v2 · 2010-09-28 · math.DG · math-ph · math.MP

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{5P3DDNOU4AZH6YIGONVE5XK5SK}

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	2026-05-18T03:30:55.716009Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ebf631b5d4e0327f6106736a4edd5d9289c70c9230a02a4ff36520a5fda311c3

Aliases

arxiv: 1009.5661 · arxiv_version: 1009.5661v2 · doi: 10.48550/arxiv.1009.5661 · pith_short_12: 5P3DDNOU4AZH · pith_short_16: 5P3DDNOU4AZH6YIG · pith_short_8: 5P3DDNOU

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/5P3DDNOU4AZH6YIGONVE5XK5SK \
  | 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: ebf631b5d4e0327f6106736a4edd5d9289c70c9230a02a4ff36520a5fda311c3

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ef131570812b0a90d386fd788cbc335c6069080d80fc6d0aaf91fe2d0af2cecd",
    "cross_cats_sorted": [
      "math-ph",
      "math.MP"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.DG",
    "submitted_at": "2010-09-28T19:28:53Z",
    "title_canon_sha256": "dee30aa75d6b77910865d5bd68752e630c969c69441e336fd7ad7fd3cd4c6f77"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1009.5661",
    "kind": "arxiv",
    "version": 2
  }
}