Pith Number

pith:ZUQ2RM72

pith:2009:ZUQ2RM725MB3OIGYQHBFRMQGBY

not attested not anchored not stored refs pending

Dominated bilinear forms and 2-homogeneous polynomials

D. Pellegrino, G. Botelho, P. Rueda

arxiv:0905.2079 v2 · 2009-05-13 · math.FA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{ZUQ2RM725MB3OIGYQHBFRMQGBY}

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	2026-05-18T01:31:20.203128Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

cd21a8b3faeb03b720d881c258b2060e11dbfbd5e5c02ca9afb198b7e9f18f1a

Aliases

arxiv: 0905.2079 · arxiv_version: 0905.2079v2 · doi: 10.48550/arxiv.0905.2079 · pith_short_12: ZUQ2RM725MB3 · pith_short_16: ZUQ2RM725MB3OIGY · pith_short_8: ZUQ2RM72

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/ZUQ2RM725MB3OIGYQHBFRMQGBY \
  | 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: cd21a8b3faeb03b720d881c258b2060e11dbfbd5e5c02ca9afb198b7e9f18f1a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6f9846b8667d6fc895403f1deff42dc547cb09ce8b4ffdd93fdbb9d214d17eea",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.FA",
    "submitted_at": "2009-05-13T11:57:42Z",
    "title_canon_sha256": "a4911bba36e5678bf5d799a977c85bb453a4bedaf9a708d6c33384b2475088ec"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0905.2079",
    "kind": "arxiv",
    "version": 2
  }
}