Pith Number

pith:NV4CEKMF

pith:2012:NV4CEKMFGPGZFNWKZUCZZNFANN

not attested not anchored not stored refs pending

Quadro-quadric cremona transformations in low dimensions via the JC-correspondence

Francesco Russo, Luc Pirio

arxiv:1204.0428 v1 · 2012-04-02 · 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{NV4CEKMFGPGZFNWKZUCZZNFANN}

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	2026-05-18T03:58:49.342724Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6d7822298533cd92b6cacd059cb4a06b699cb0943fe092dbb43d21945fee57e6

Aliases

arxiv: 1204.0428 · arxiv_version: 1204.0428v1 · doi: 10.48550/arxiv.1204.0428 · pith_short_12: NV4CEKMFGPGZ · pith_short_16: NV4CEKMFGPGZFNWK · pith_short_8: NV4CEKMF

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/NV4CEKMFGPGZFNWKZUCZZNFANN \
  | 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: 6d7822298533cd92b6cacd059cb4a06b699cb0943fe092dbb43d21945fee57e6

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a96b77d3ef13c268a3330f4bbd03dbe2d9b9950fb977a7af48d2441c24998c4c",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2012-04-02T15:11:37Z",
    "title_canon_sha256": "0a0301b087d20207f4f947028997c4770d02430c885c7e5bb36f3b6aafe79212"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1204.0428",
    "kind": "arxiv",
    "version": 1
  }
}