Pith Number

pith:N52ZJ4XO

pith:2018:N52ZJ4XOJU6QOPX26GTPJHBSEC

not attested not anchored not stored refs pending

Computing basepoints of linear series in the plane

Niels Lubbes

arxiv:1805.03452 v1 · 2018-05-09 · math.AG · cs.SC

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{N52ZJ4XOJU6QOPX26GTPJHBSEC}

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	2026-05-18T00:16:20.181399Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6f7594f2ee4d3d073efaf1a6f49c3220a07489b9e1c987889d399c7f2c5f8765

Aliases

arxiv: 1805.03452 · arxiv_version: 1805.03452v1 · doi: 10.48550/arxiv.1805.03452 · pith_short_12: N52ZJ4XOJU6Q · pith_short_16: N52ZJ4XOJU6QOPX2 · pith_short_8: N52ZJ4XO

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/N52ZJ4XOJU6QOPX26GTPJHBSEC \
  | 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: 6f7594f2ee4d3d073efaf1a6f49c3220a07489b9e1c987889d399c7f2c5f8765

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "71ba740161d8ae384922c86ad9bf56208d3618909132237a11f40916143a25a6",
    "cross_cats_sorted": [
      "cs.SC"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2018-05-09T10:47:54Z",
    "title_canon_sha256": "e33784b2f9eebf0bfe0c7a7657230ac25ec66f92185737974d47505c0becfbc0"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1805.03452",
    "kind": "arxiv",
    "version": 1
  }
}