Pith Number

pith:F35YB2TL

pith:2012:F35YB2TLEZ6DT4EWKTFGUNCAUU

not attested not anchored not stored refs pending

Sums of squares of polynomials with rational coefficients

Claus Scheiderer

arxiv:1209.2976 v3 · 2012-09-13 · math.AG · math.NT

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{F35YB2TLEZ6DT4EWKTFGUNCAUU}

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	2026-05-18T03:20:58.733461Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2efb80ea6b267c39f09654ca6a3440a51c641a703ea4bbdd2f901f3f248e09af

Aliases

arxiv: 1209.2976 · arxiv_version: 1209.2976v3 · doi: 10.48550/arxiv.1209.2976 · pith_short_12: F35YB2TLEZ6D · pith_short_16: F35YB2TLEZ6DT4EW · pith_short_8: F35YB2TL

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/F35YB2TLEZ6DT4EWKTFGUNCAUU \
  | 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: 2efb80ea6b267c39f09654ca6a3440a51c641a703ea4bbdd2f901f3f248e09af

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5285fa6267f591c39e84b435ca24b88f03b6237d0392cf83dd7ff7bd6279d950",
    "cross_cats_sorted": [
      "math.NT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2012-09-13T17:50:49Z",
    "title_canon_sha256": "0aeb4de312deefbea2efd85485f065341c03d9f1ad1db255a238a607be4aa534"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1209.2976",
    "kind": "arxiv",
    "version": 3
  }
}