Pith Number

pith:AGJFPMH7

pith:2017:AGJFPMH7UHCR5QHMKBHZTYYLGX

not attested not anchored not stored refs pending

On the Diophantine equation $ \sum_{i=1}^n a_ix_{i} ^4= \sum_{j=1}^na_j y_{j}^4 $

Farzali Izadi, Mehdi Baghalagdam

arxiv:1701.02605 v1 · 2017-01-06 · 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{AGJFPMH7UHCR5QHMKBHZTYYLGX}

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	2026-05-18T00:53:03.865724Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

019257b0ffa1c51ec0ec504f99e30b35e17835d48e685ac2d06560419cd43c2a

Aliases

arxiv: 1701.02605 · arxiv_version: 1701.02605v1 · doi: 10.48550/arxiv.1701.02605 · pith_short_12: AGJFPMH7UHCR · pith_short_16: AGJFPMH7UHCR5QHM · pith_short_8: AGJFPMH7

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/AGJFPMH7UHCR5QHMKBHZTYYLGX \
  | 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: 019257b0ffa1c51ec0ec504f99e30b35e17835d48e685ac2d06560419cd43c2a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "18745edf21cdc3d03b593078fb8fbb5cb085807d1b3d66096faf964cfb6d6f4d",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by-nc-sa/4.0/",
    "primary_cat": "math.NT",
    "submitted_at": "2017-01-06T22:05:45Z",
    "title_canon_sha256": "1ccee9ef06ff31602777f7f4db4f3ad26f494b872b6299ec2090af92d0a88577"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1701.02605",
    "kind": "arxiv",
    "version": 1
  }
}