Pith Number

pith:N36D7ZBM

pith:2013:N36D7ZBMXYIBLWJK25ITQLWWM2

not attested not anchored not stored refs pending

Note on a double binomial sum relevant to the Hadamard maximal determinant problem

Judy-anne H. Osborn, Richard P. Brent

arxiv:1309.2795 v2 · 2013-09-11 · 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{N36D7ZBMXYIBLWJK25ITQLWWM2}

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	2026-05-18T03:13:33.341944Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6efc3fe42cbe1015d92ad751382ed666a0ce15920c0028de6a29c6af4e111620

Aliases

arxiv: 1309.2795 · arxiv_version: 1309.2795v2 · doi: 10.48550/arxiv.1309.2795 · pith_short_12: N36D7ZBMXYIB · pith_short_16: N36D7ZBMXYIBLWJK · pith_short_8: N36D7ZBM

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/N36D7ZBMXYIBLWJK25ITQLWWM2 \
  | 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: 6efc3fe42cbe1015d92ad751382ed666a0ce15920c0028de6a29c6af4e111620

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6d9c10292d59171c1a20968199cd69c1fe6bef89d425c7e2af95f31adca7eb78",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2013-09-11T11:42:56Z",
    "title_canon_sha256": "9958d7b4a7b04b40702731c1622f146ff09c1230c4bdbf5eec9dd4dc732e5c1a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1309.2795",
    "kind": "arxiv",
    "version": 2
  }
}