Pith Number

pith:PG3Q2B7F

pith:2010:PG3Q2B7FSOIVK3HHXFVKUFA4XK

not attested not anchored not stored refs pending

Some Curvature Problems in Semi-Riemannian Geometry

Felix Finster, Marc Nardmann

arxiv:1010.2311 v1 · 2010-10-12 · math.DG · math-ph · math.AP · 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{PG3Q2B7FSOIVK3HHXFVKUFA4XK}

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	2026-05-18T04:02:13.715144Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

79b70d07e59391556ce7b96aaa141cba8a7ecc0f2f6b9add7dae3c8e4393ba44

Aliases

arxiv: 1010.2311 · arxiv_version: 1010.2311v1 · doi: 10.48550/arxiv.1010.2311 · pith_short_12: PG3Q2B7FSOIV · pith_short_16: PG3Q2B7FSOIVK3HH · pith_short_8: PG3Q2B7F

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/PG3Q2B7FSOIVK3HHXFVKUFA4XK \
  | 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: 79b70d07e59391556ce7b96aaa141cba8a7ecc0f2f6b9add7dae3c8e4393ba44

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e644f7573130cf9deb5be3eb299651063bb07471ea8db0379ad1d44b369ee880",
    "cross_cats_sorted": [
      "math-ph",
      "math.AP",
      "math.MP"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.DG",
    "submitted_at": "2010-10-12T07:33:05Z",
    "title_canon_sha256": "63a1160a6fde0ebf2b0bcf45ef93f3aa514dc593d54df582dde06739e4f27ee8"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1010.2311",
    "kind": "arxiv",
    "version": 1
  }
}