Pith Number

pith:EY4MNJIS

pith:2009:EY4MNJISUSPP2ZPCWXMJHKCOQE

not attested not anchored not stored refs pending

Very special divisors on real algebraic curves

Jean-Philippe Monnier (LAREMA)

arxiv:0905.4663 v1 · 2009-05-28 · 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{EY4MNJISUSPP2ZPCWXMJHKCOQE}

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	2026-05-18T02:58:03.150677Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2638c6a512a49efd65e2b5d893a84e81003eae9da59c873564072424b3219fe1

Aliases

arxiv: 0905.4663 · arxiv_version: 0905.4663v1 · doi: 10.48550/arxiv.0905.4663 · pith_short_12: EY4MNJISUSPP · pith_short_16: EY4MNJISUSPP2ZPC · pith_short_8: EY4MNJIS

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/EY4MNJISUSPP2ZPCWXMJHKCOQE \
  | 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: 2638c6a512a49efd65e2b5d893a84e81003eae9da59c873564072424b3219fe1

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "971d64edbc0a8ae2e90d987b590b83c3045080c7f7587a0ea0f2dccda97cb26f",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2009-05-28T14:27:07Z",
    "title_canon_sha256": "38c39f33dd26a3e217e00a8803cf1550394cdeea9bb2b95fac22d085f9ba78f7"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0905.4663",
    "kind": "arxiv",
    "version": 1
  }
}