Pith Number

pith:2N4EOD5N

pith:2020:2N4EOD5N53MFAA2X7XNXAD7VCY

not attested not anchored not stored refs pending

Veronese representation of projective Hjelmslev planes over some quadratic alternative algebras

Anneleen De Schepper, Hendrik Van Maldeghem

arxiv:2001.03395 v2 · 2020-01-10 · math.CO · math.RA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{2N4EOD5N53MFAA2X7XNXAD7VCY}

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	2026-07-05T00:32:54.459042Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d378470fadeed8500357fddb700ff5161c38f417b0ff65dccee3a3fa49a6d8bb

Aliases

arxiv: 2001.03395 · arxiv_version: 2001.03395v2 · doi: 10.48550/arxiv.2001.03395 · pith_short_12: 2N4EOD5N53MF · pith_short_16: 2N4EOD5N53MFAA2X · pith_short_8: 2N4EOD5N

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/2N4EOD5N53MFAA2X7XNXAD7VCY \
  | 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: d378470fadeed8500357fddb700ff5161c38f417b0ff65dccee3a3fa49a6d8bb

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "116bf14e67302b098c728c3cdbef7a5e8b365f53f650caacf386840c79513ada",
    "cross_cats_sorted": [
      "math.RA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2020-01-10T11:38:19Z",
    "title_canon_sha256": "7aeb383963e9e25913cdc20af8141313079ef9e3696e4f91d61f13a91203b4e2"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2001.03395",
    "kind": "arxiv",
    "version": 2
  }
}