Pith Number

pith:ZRB2XOG5

pith:2007:ZRB2XOG5EAIDYHJX6HDANNQ43A

not attested not anchored not stored refs pending

The Nicolas and Robin inequalities with sums of two squares

C. Wesley Nevans, Derrick N. Hart, Pieter Moree, William D. Banks

arxiv:0710.2424 v1 · 2007-10-12 · 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{ZRB2XOG5EAIDYHJX6HDANNQ43A}

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	2026-05-18T03:50:00.225668Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

cc43abb8dd20103c1d37f1c606b61cd83e95827ae69f4e34fdd72fb3852c723d

Aliases

arxiv: 0710.2424 · arxiv_version: 0710.2424v1 · doi: 10.48550/arxiv.0710.2424 · pith_short_12: ZRB2XOG5EAID · pith_short_16: ZRB2XOG5EAIDYHJX · pith_short_8: ZRB2XOG5

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/ZRB2XOG5EAIDYHJX6HDANNQ43A \
  | 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: cc43abb8dd20103c1d37f1c606b61cd83e95827ae69f4e34fdd72fb3852c723d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "713bcd87fc35cc9e25d86f5ff480aed02e6d7c37b12e24370c84d90119b52632",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "math.NT",
    "submitted_at": "2007-10-12T10:20:01Z",
    "title_canon_sha256": "b1ab3d34447d9fa6b41f2d99af5cec59f23935b376cdd583845a2481a6bc58c8"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0710.2424",
    "kind": "arxiv",
    "version": 1
  }
}