Pith Number

pith:BYHLXJKW

pith:2017:BYHLXJKWWY6ZOP74CA6GTHIBFA

not attested not anchored not stored refs pending

On the sums of many biquadrates in two different ways

Farzali Izadi, Mehdi Baghalagdam

arxiv:1701.02687 v1 · 2017-01-09 · 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{BYHLXJKWWY6ZOP74CA6GTHIBFA}

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	2026-05-18T00:53:03.650365Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0e0ebba556b63d973ffc103c699d0128343714f25f0422e07fdd6b60dd6e6386

Aliases

arxiv: 1701.02687 · arxiv_version: 1701.02687v1 · doi: 10.48550/arxiv.1701.02687 · pith_short_12: BYHLXJKWWY6Z · pith_short_16: BYHLXJKWWY6ZOP74 · pith_short_8: BYHLXJKW

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/BYHLXJKWWY6ZOP74CA6GTHIBFA \
  | 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: 0e0ebba556b63d973ffc103c699d0128343714f25f0422e07fdd6b60dd6e6386

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "425d5cf7ab5a6d37c5999d68b87dc7de0682ac7bee94b2a1c7356fa74a5b93fd",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by-nc-sa/4.0/",
    "primary_cat": "math.NT",
    "submitted_at": "2017-01-09T06:33:17Z",
    "title_canon_sha256": "141d6f6aedce0461fe23523c35a9bbc4a9233cd6525068184f45ae01c693aa66"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1701.02687",
    "kind": "arxiv",
    "version": 1
  }
}