Pith Number

pith:Z3F2JCZB

pith:2018:Z3F2JCZBCYZ5JH2476EPU4KU3R

not attested not anchored not stored refs pending

0-1 matrices with zero trace whose squares are 0-1 matrices

Zejun Huang, Zhenhua Lyu

arxiv:1803.01293 v1 · 2018-03-04 · 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{Z3F2JCZBCYZ5JH2476EPU4KU3R}

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	2026-05-18T00:22:01.143491Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

cecba48b211633d49f5cff88fa7154dc645a16ea4cdd96a7ebe650dc9f274e36

Aliases

arxiv: 1803.01293 · arxiv_version: 1803.01293v1 · doi: 10.48550/arxiv.1803.01293 · pith_short_12: Z3F2JCZBCYZ5 · pith_short_16: Z3F2JCZBCYZ5JH24 · pith_short_8: Z3F2JCZB

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/Z3F2JCZBCYZ5JH2476EPU4KU3R \
  | 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: cecba48b211633d49f5cff88fa7154dc645a16ea4cdd96a7ebe650dc9f274e36

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f849e659b8d00c4e21ce78c0e81e3dc248a7cbb35f18cef507f5d906f5b556c9",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2018-03-04T04:02:04Z",
    "title_canon_sha256": "dc032ba3f5872c57193d607ec3fd30c1b06978e51635a0006dfefcccd5db5e7e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1803.01293",
    "kind": "arxiv",
    "version": 1
  }
}