Pith Number

pith:EDTJ6GMZ

pith:2009:EDTJ6GMZ6KVOCDZJWKTPCXHIGJ

not attested not anchored not stored refs pending

Plucker forms and the theta map

Alessandro Verra, Sonia Brivio

arxiv:0910.5630 v2 · 2009-10-29 · 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{EDTJ6GMZ6KVOCDZJWKTPCXHIGJ}

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	2026-05-18T04:30:02.933449Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

20e69f1999f2aae10f29b2a6f15ce83249cdc5610ef79a2359975b49d41e5665

Aliases

arxiv: 0910.5630 · arxiv_version: 0910.5630v2 · doi: 10.48550/arxiv.0910.5630 · pith_short_12: EDTJ6GMZ6KVO · pith_short_16: EDTJ6GMZ6KVOCDZJ · pith_short_8: EDTJ6GMZ

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/EDTJ6GMZ6KVOCDZJWKTPCXHIGJ \
  | 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: 20e69f1999f2aae10f29b2a6f15ce83249cdc5610ef79a2359975b49d41e5665

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "95f27858a64e3895e4593ecce4313e6a4be77cab8d8574ac7cabcf6dd9b28dff",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2009-10-29T12:38:41Z",
    "title_canon_sha256": "e3699c59ec7b272cb34a5e7c1fc16e9c98a6e36f7a363e0e0313b82bae74e137"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0910.5630",
    "kind": "arxiv",
    "version": 2
  }
}