Pith Number

pith:FKU74YY2

pith:2018:FKU74YY2LDF4H3TUVYTUUEBOIN

not attested not anchored not stored refs pending

The existence of square non-integer Heffter arrays

Diane Donovan, Jeff Dinitz, Nicholas J. Cavenagh, Sule Yaz{\i}c{\i}

arxiv:1808.02588 v1 · 2018-08-08 · 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{FKU74YY2LDF4H3TUVYTUUEBOIN}

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	2026-05-18T00:08:34.902833Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2aa9fe631a58cbc3ee74ae274a102e43637a4ef525e3a2f432f8cb2509354d3e

Aliases

arxiv: 1808.02588 · arxiv_version: 1808.02588v1 · doi: 10.48550/arxiv.1808.02588 · pith_short_12: FKU74YY2LDF4 · pith_short_16: FKU74YY2LDF4H3TU · pith_short_8: FKU74YY2

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/FKU74YY2LDF4H3TUVYTUUEBOIN \
  | 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: 2aa9fe631a58cbc3ee74ae274a102e43637a4ef525e3a2f432f8cb2509354d3e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "cabe30c3e1d5c4833b472005a478f020cae1bbfd3fdf28b76899ff4a4990ef36",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2018-08-08T00:07:04Z",
    "title_canon_sha256": "c14a54f3053a63d33fde000f57221916d6444ed94c975d991b62b1ad9228969d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1808.02588",
    "kind": "arxiv",
    "version": 1
  }
}