Pith Number

pith:QKAMGFY3

pith:2018:QKAMGFY3FTSU4MRUW5RD7ABLX3

not attested not anchored not stored refs pending

On constructing orthogonal generalized doubly stochastic matrices

Alicja Smoktunowicz, Gianluca Oderda, Ryszard Kozera

arxiv:1809.07618 v1 · 2018-09-20 · cs.NA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{QKAMGFY3FTSU4MRUW5RD7ABLX3}

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	2026-05-18T00:05:15.722220Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8280c3171b2ce54e3234b7623f802bbed359c8ae362440334027e1e36e870c7d

Aliases

arxiv: 1809.07618 · arxiv_version: 1809.07618v1 · doi: 10.48550/arxiv.1809.07618 · pith_short_12: QKAMGFY3FTSU · pith_short_16: QKAMGFY3FTSU4MRU · pith_short_8: QKAMGFY3

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/QKAMGFY3FTSU4MRUW5RD7ABLX3 \
  | 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: 8280c3171b2ce54e3234b7623f802bbed359c8ae362440334027e1e36e870c7d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "469f607de038e075b17e919ef974fac4a53d548092eda31be1e6956ece0c40c5",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.NA",
    "submitted_at": "2018-09-20T13:42:35Z",
    "title_canon_sha256": "cb03b752beafb7de1fbd6225d47b622c945ecfe2d33067165cfe3cc50c8897e4"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1809.07618",
    "kind": "arxiv",
    "version": 1
  }
}