Pith Number

pith:LRDUHGXV

pith:2017:LRDUHGXVV53BVYMQFDCHU2ZYKK

not attested not anchored not stored refs pending

A diophantine problem on biquadrates revisited

Ajai Choudhry

arxiv:1707.09129 v1 · 2017-07-28 · 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{LRDUHGXVV53BVYMQFDCHU2ZYKK}

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	2026-05-18T00:39:17.012794Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

5c47439af5af761ae19028c47a6b3852ae2c6a53e225795b28825ccdd45f8b28

Aliases

arxiv: 1707.09129 · arxiv_version: 1707.09129v1 · doi: 10.48550/arxiv.1707.09129 · pith_short_12: LRDUHGXVV53B · pith_short_16: LRDUHGXVV53BVYMQ · pith_short_8: LRDUHGXV

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/LRDUHGXVV53BVYMQFDCHU2ZYKK \
  | 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: 5c47439af5af761ae19028c47a6b3852ae2c6a53e225795b28825ccdd45f8b28

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8b85a01ba118787e239893282eed72839e80d4ccd338a8e60a01363f93728a25",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NT",
    "submitted_at": "2017-07-28T07:20:47Z",
    "title_canon_sha256": "d0c813e85218d36edbeded0deb62371435c4e177765a1edde68c10686386c0e7"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1707.09129",
    "kind": "arxiv",
    "version": 1
  }
}