Pith Number

pith:7HZCTUBX

pith:2013:7HZCTUBXC3J3Q3IEOTTF34I7MD

not attested not anchored not stored refs pending

On the Diophantine equation N X^2 + 2^L 3^M = Y^N

Eva G. Goedhart, Helen G. Grundman

arxiv:1304.6413 v2 · 2013-04-23 · 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{7HZCTUBXC3J3Q3IEOTTF34I7MD}

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	2026-05-18T02:54:05.227201Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f9f229d03716d3b86d0474e65df11f60fdc4b15f96f65a712f92b314e37a8eeb

Aliases

arxiv: 1304.6413 · arxiv_version: 1304.6413v2 · doi: 10.48550/arxiv.1304.6413 · pith_short_12: 7HZCTUBXC3J3 · pith_short_16: 7HZCTUBXC3J3Q3IE · pith_short_8: 7HZCTUBX

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/7HZCTUBXC3J3Q3IEOTTF34I7MD \
  | 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: f9f229d03716d3b86d0474e65df11f60fdc4b15f96f65a712f92b314e37a8eeb

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d81dad0506e6bed09b72e5246d6f526e24a91dec19aecd27e92cc285c2de819e",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NT",
    "submitted_at": "2013-04-23T20:13:00Z",
    "title_canon_sha256": "05fb2bab0ffff19de313fca25f57df1c40d6a61748a979bad23413739e20e458"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1304.6413",
    "kind": "arxiv",
    "version": 2
  }
}