Pith Number

pith:DZTD4Y4G

pith:2015:DZTD4Y4GWKIHQKNZ46KHRSY4RG

not attested not anchored not stored refs pending

Pseudo Magic Squares

Ana Lucia Pereira Baccon, Giuliano G. La Guardia

arxiv:1504.05642 v1 · 2015-04-22 · math.GM

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{DZTD4Y4GWKIHQKNZ46KHRSY4RG}

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	2026-05-18T01:03:23.855167Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1e663e6386b2907829b9e79478cb1c8982136820edc87d46f223d443580d25c7

Aliases

arxiv: 1504.05642 · arxiv_version: 1504.05642v1 · doi: 10.48550/arxiv.1504.05642 · pith_short_12: DZTD4Y4GWKIH · pith_short_16: DZTD4Y4GWKIHQKNZ · pith_short_8: DZTD4Y4G

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/DZTD4Y4GWKIHQKNZ46KHRSY4RG \
  | 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: 1e663e6386b2907829b9e79478cb1c8982136820edc87d46f223d443580d25c7

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9b306d2b19305f52084fdfc0c0946cc238c8519afacd818c7d61d1ca29b9f1e1",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.GM",
    "submitted_at": "2015-04-22T03:24:34Z",
    "title_canon_sha256": "b1520cebe6191c7131eee508d47b9ce6db8afb1e608946cdaca39441fb7bd2ff"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1504.05642",
    "kind": "arxiv",
    "version": 1
  }
}