Pith Number

pith:3UYOI5AU

pith:2012:3UYOI5AU6SOYTGA3GXXK265VD5

not attested not anchored not stored refs pending

Universal torsors and values of quadratic polynomials represented by norms

Arne Smeets, Dasheng Wei, Ulrich Derenthal

arxiv:1202.3567 v3 · 2012-02-16 · math.NT · 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{3UYOI5AU6SOYTGA3GXXK265VD5}

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	2026-05-18T02:50:03.747682Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

dd30e47414f49d89981b35eead7bb51f77ef28a4d92b38a5d294711d4dcf2f66

Aliases

arxiv: 1202.3567 · arxiv_version: 1202.3567v3 · doi: 10.48550/arxiv.1202.3567 · pith_short_12: 3UYOI5AU6SOY · pith_short_16: 3UYOI5AU6SOYTGA3 · pith_short_8: 3UYOI5AU

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/3UYOI5AU6SOYTGA3GXXK265VD5 \
  | 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: dd30e47414f49d89981b35eead7bb51f77ef28a4d92b38a5d294711d4dcf2f66

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b22d57641ac1060fae78a603e8b2ccf52c4ac2a7f43eb79f7c8de0cfe8ded571",
    "cross_cats_sorted": [
      "math.AG"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NT",
    "submitted_at": "2012-02-16T11:34:07Z",
    "title_canon_sha256": "8a0314782c8394d58189ab110401d5dc33fd95acd8c675fdc8e73d41eace84ce"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1202.3567",
    "kind": "arxiv",
    "version": 3
  }
}