Pith Number

pith:RRWJXPEG

pith:2012:RRWJXPEGMBI4FRNH53NP6ZXQNN

not attested not anchored not stored refs pending

Projective planes over quadratic 2-dimensional algebras

Hendrik Van Maldeghem, Jeroen Schillewaert

arxiv:1206.3021 v1 · 2012-06-14 · math.AG · math.AC · math.DG · math.MG

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{RRWJXPEGMBI4FRNH53NP6ZXQNN}

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	2026-05-18T03:53:32.996216Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8c6c9bbc866051c2c5a7eedaff66f06b52a826e764f67c98711d0c8ca659c86f

Aliases

arxiv: 1206.3021 · arxiv_version: 1206.3021v1 · doi: 10.48550/arxiv.1206.3021 · pith_short_12: RRWJXPEGMBI4 · pith_short_16: RRWJXPEGMBI4FRNH · pith_short_8: RRWJXPEG

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/RRWJXPEGMBI4FRNH53NP6ZXQNN \
  | 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: 8c6c9bbc866051c2c5a7eedaff66f06b52a826e764f67c98711d0c8ca659c86f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "21cf98c7dea1746cd190388d2efc7561365d7d2741eda3e5a7b50248ccce4a06",
    "cross_cats_sorted": [
      "math.AC",
      "math.DG",
      "math.MG"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2012-06-14T07:24:26Z",
    "title_canon_sha256": "277c41e1de52c716cf44ba581571a1e506ef56875b69c0457cadbba268d40e83"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1206.3021",
    "kind": "arxiv",
    "version": 1
  }
}