Pith Number

pith:FESV6RT7

pith:2018:FESV6RT7DUEPOT4G4FI3DMN4YM

not attested not anchored not stored refs pending

Magic squares with empty cells

Abdollah Khodkar, David Leach

arxiv:1804.11189 v1 · 2018-04-30 · math.CO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{FESV6RT7DUEPOT4G4FI3DMN4YM}

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	2026-05-18T00:17:14.339235Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

29255f467f1d08f74f86e151b1b1bcc33bf4d569f1c5db6070e7d1ace428bbd3

Aliases

arxiv: 1804.11189 · arxiv_version: 1804.11189v1 · doi: 10.48550/arxiv.1804.11189 · pith_short_12: FESV6RT7DUEP · pith_short_16: FESV6RT7DUEPOT4G · pith_short_8: FESV6RT7

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/FESV6RT7DUEPOT4G4FI3DMN4YM \
  | 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: 29255f467f1d08f74f86e151b1b1bcc33bf4d569f1c5db6070e7d1ace428bbd3

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "54219fe6db350ec0746191a817ea1e7c2543fe694a41c7d7f5a002275f6d82d9",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2018-04-30T13:44:58Z",
    "title_canon_sha256": "4730e68d4f82c9aeb80a90e9a18d2f79d27b31d045eed5bd4699b7a99d999c71"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1804.11189",
    "kind": "arxiv",
    "version": 1
  }
}