Pith Number

pith:BEI2A4D7

pith:2012:BEI2A4D73KISPZKBTCLJPBATNF

not attested not anchored not stored refs pending

Recipes to Fermat-type equations of the form x^r + y^r = Cz^p

Nuno Freitas

arxiv:1203.3371 v2 · 2012-03-15 · 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{BEI2A4D73KISPZKBTCLJPBATNF}

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	2026-05-18T03:08:25.227114Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0911a0707fda9127e54198969784136959c38d6e2f447ae5315a48c839c84123

Aliases

arxiv: 1203.3371 · arxiv_version: 1203.3371v2 · doi: 10.48550/arxiv.1203.3371 · pith_short_12: BEI2A4D73KIS · pith_short_16: BEI2A4D73KISPZKB · pith_short_8: BEI2A4D7

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/BEI2A4D73KISPZKBTCLJPBATNF \
  | 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: 0911a0707fda9127e54198969784136959c38d6e2f447ae5315a48c839c84123

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "283a8cfa48f929bbdaebdec79bc7a858d724c05f1f0b09f8a6101b2b95d1e643",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NT",
    "submitted_at": "2012-03-15T14:33:50Z",
    "title_canon_sha256": "baea0d6be57459ab4e3794cad2b9cd32c72592c9ccc8cb5135571572bf91647f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1203.3371",
    "kind": "arxiv",
    "version": 2
  }
}