Pith Number

pith:HLADD5NL

pith:2018:HLADD5NLJRIOP2XUU3JFLWYOLJ

not attested not anchored not stored refs pending

Pfaffian representations of plane curves

David Oscari

arxiv:1804.02803 v1 · 2018-04-09 · math.AG

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{HLADD5NLJRIOP2XUU3JFLWYOLJ}

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	2026-05-18T00:18:58.366106Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3ac031f5ab4c50e7eaf4a6d255db0e5a7614a86a7c45ab6af643381e74a8d5fd

Aliases

arxiv: 1804.02803 · arxiv_version: 1804.02803v1 · doi: 10.48550/arxiv.1804.02803 · pith_short_12: HLADD5NLJRIO · pith_short_16: HLADD5NLJRIOP2XU · pith_short_8: HLADD5NL

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/HLADD5NLJRIOP2XUU3JFLWYOLJ \
  | 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: 3ac031f5ab4c50e7eaf4a6d255db0e5a7614a86a7c45ab6af643381e74a8d5fd

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5c04439c89a3edea56f072380c2fdc9316d02d3ea6799691ae3427979833d9ec",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2018-04-09T03:21:40Z",
    "title_canon_sha256": "f2f4d8d638c8577e09ccd0f56ea6d2304c61f2245b811972220863e1201f70db"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1804.02803",
    "kind": "arxiv",
    "version": 1
  }
}