Pith Number

pith:B7LDSS6X

pith:2012:B7LDSS6XT5OWWRFQY4NQDO74W7

not attested not anchored not stored refs pending

Irreducibility of G-varieties defined by quadrics

Cesar Massri

arxiv:1202.5531 v3 · 2012-02-24 · 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{B7LDSS6XT5OWWRFQY4NQDO74W7}

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	2026-05-18T03:29:40.811138Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0fd6394bd79f5d6b44b0c71b01bbfcb7e4a484a50161794f5dbeb7e27b45bf79

Aliases

arxiv: 1202.5531 · arxiv_version: 1202.5531v3 · doi: 10.48550/arxiv.1202.5531 · pith_short_12: B7LDSS6XT5OW · pith_short_16: B7LDSS6XT5OWWRFQ · pith_short_8: B7LDSS6X

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/B7LDSS6XT5OWWRFQY4NQDO74W7 \
  | 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: 0fd6394bd79f5d6b44b0c71b01bbfcb7e4a484a50161794f5dbeb7e27b45bf79

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2c82de61109ec8b5b55c5bc4cbb8f571b45137853ce20554c2f049d965cc41d5",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2012-02-24T19:18:06Z",
    "title_canon_sha256": "99dfb3b7ac9a66fb079cce7d1695f84c08daf8f8fad027b6677454e47d710225"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1202.5531",
    "kind": "arxiv",
    "version": 3
  }
}