Pith Number

pith:M3JTQZEZ

pith:2013:M3JTQZEZB55C6NKUMDXKWR7ECL

not attested not anchored not stored refs pending

Signatures of hermitian forms and "prime ideals" of Witt groups

Thomas Unger, Vincent Astier

arxiv:1303.3494 v4 · 2013-03-14 · math.RA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{M3JTQZEZB55C6NKUMDXKWR7ECL}

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	2026-05-18T01:25:55.948056Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

66d33864990f7a2f355460eeab47e412d053f729682a1f36a0fc422c3288c20a

Aliases

arxiv: 1303.3494 · arxiv_version: 1303.3494v4 · doi: 10.48550/arxiv.1303.3494 · pith_short_12: M3JTQZEZB55C · pith_short_16: M3JTQZEZB55C6NKU · pith_short_8: M3JTQZEZ

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/M3JTQZEZB55C6NKUMDXKWR7ECL \
  | 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: 66d33864990f7a2f355460eeab47e412d053f729682a1f36a0fc422c3288c20a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "325d731ba36f29c67887c766af72d8bb8fb381a12674494d83e5d2fc7a419f7d",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.RA",
    "submitted_at": "2013-03-14T16:07:49Z",
    "title_canon_sha256": "09a1acab8ae82617e0b3448caafa69a988d58f1d6015e3e4fd78d461407d641a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1303.3494",
    "kind": "arxiv",
    "version": 4
  }
}