Pith Number

pith:7AEOPXET

pith:2017:7AEOPXETIRQQQZOLKPCA62GFUR

not attested not anchored not stored refs pending

A Generalization of the Doubling Construction for Sums of Squares Identities

Chi Zhang, Hua-Lin Huang

arxiv:1705.04913 v2 · 2017-05-14 · math.RA · 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{7AEOPXETIRQQQZOLKPCA62GFUR}

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	2026-05-18T00:37:58.505207Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f808e7dc9344610865cb53c40f68c5a44b7e30c45fca9239d288a529e9d5430a

Aliases

arxiv: 1705.04913 · arxiv_version: 1705.04913v2 · doi: 10.48550/arxiv.1705.04913 · pith_short_12: 7AEOPXETIRQQ · pith_short_16: 7AEOPXETIRQQQZOL · pith_short_8: 7AEOPXET

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/7AEOPXETIRQQQZOLKPCA62GFUR \
  | 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: f808e7dc9344610865cb53c40f68c5a44b7e30c45fca9239d288a529e9d5430a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f3408877137cd41983f2cc2e2163553f619d3ed506be1f1b7f71c1224bf19c28",
    "cross_cats_sorted": [
      "math.NT"
    ],
    "license": "http://creativecommons.org/licenses/by-sa/4.0/",
    "primary_cat": "math.RA",
    "submitted_at": "2017-05-14T03:47:05Z",
    "title_canon_sha256": "81220bf8d7aee15699ad92003047a896e941f3c663db6a9cbb03657981269c5f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1705.04913",
    "kind": "arxiv",
    "version": 2
  }
}