Pith Number

pith:R4ZZX4RM

pith:2013:R4ZZX4RM77ANF3AJQI2USOU7IC

not attested not anchored not stored refs pending

On the representation of quadratic forms by quadratic forms

Michael Harvey, Rainer Dietmann

arxiv:1301.6772 v1 · 2013-01-28 · 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{R4ZZX4RM77ANF3AJQI2USOU7IC}

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	2026-05-18T03:35:12.404005Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8f339bf22cffc0d2ec098235493a9f40a291feb6ac264d308608bba1d480f9d8

Aliases

arxiv: 1301.6772 · arxiv_version: 1301.6772v1 · doi: 10.48550/arxiv.1301.6772 · pith_short_12: R4ZZX4RM77AN · pith_short_16: R4ZZX4RM77ANF3AJ · pith_short_8: R4ZZX4RM

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/R4ZZX4RM77ANF3AJQI2USOU7IC \
  | 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: 8f339bf22cffc0d2ec098235493a9f40a291feb6ac264d308608bba1d480f9d8

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0a090df694fbff8d85fe2f7180e5d3ecf915ab5eeb7ab3e0f7680a3de040c13f",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NT",
    "submitted_at": "2013-01-28T21:12:16Z",
    "title_canon_sha256": "df5615e29bd9d09216e852ffa13c8b753732205ffda36e0cf8bd6e291310083d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1301.6772",
    "kind": "arxiv",
    "version": 1
  }
}