Pith Number

pith:H3G44W6Q

pith:2011:H3G44W6QH7TVV32BJV7LI4US44

not attested not anchored not stored refs pending

Arithmetic of Pell surfaces

Franz Lemmermeyer, Samuel Hambleton

arxiv:1108.6305 v1 · 2011-08-31 · 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{H3G44W6QH7TVV32BJV7LI4US44}

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	2026-05-18T04:14:26.555536Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3ecdce5bd03fe75aef414d7eb47292e70eec7e35f6f1b36fe86d37c26ff3514b

Aliases

arxiv: 1108.6305 · arxiv_version: 1108.6305v1 · doi: 10.48550/arxiv.1108.6305 · pith_short_12: H3G44W6QH7TV · pith_short_16: H3G44W6QH7TVV32B · pith_short_8: H3G44W6Q

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/H3G44W6QH7TVV32BJV7LI4US44 \
  | 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: 3ecdce5bd03fe75aef414d7eb47292e70eec7e35f6f1b36fe86d37c26ff3514b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e79517a0909f936221c3cab339813a5b43f270dfe583a27c8d5238355fd3ba31",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NT",
    "submitted_at": "2011-08-31T18:08:18Z",
    "title_canon_sha256": "9bfc7a4eb4ce6d1188a07528a56ba2cd6432d0598d9eb5581c168f5a94a04728"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1108.6305",
    "kind": "arxiv",
    "version": 1
  }
}