Pith Number

pith:JBQMC3Z2

pith:2019:JBQMC3Z2FS7QBRAIT6L24Z32HV

not attested not anchored not stored refs pending

On $2$-parent-identifying set systems of block size $4$

Shohei Satake, Yujie Gu

arxiv:1908.03523 v3 · 2019-08-09 · 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{JBQMC3Z2FS7QBRAIT6L24Z32HV}

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	2026-07-05T00:58:23.972916Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

4860c16f3a2cbf00c4089f97ae677a3d5861efa9f7aab861ca8b1efa6723d978

Aliases

arxiv: 1908.03523 · arxiv_version: 1908.03523v3 · doi: 10.48550/arxiv.1908.03523 · pith_short_12: JBQMC3Z2FS7Q · pith_short_16: JBQMC3Z2FS7QBRAI · pith_short_8: JBQMC3Z2

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/JBQMC3Z2FS7QBRAIT6L24Z32HV \
  | 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: 4860c16f3a2cbf00c4089f97ae677a3d5861efa9f7aab861ca8b1efa6723d978

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "56f4e69e6f39a65be28287995cbb8d4eb4225a38b601823d39fcb6c4bc3bb5ed",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2019-08-09T16:26:23Z",
    "title_canon_sha256": "3948b0b2e95fd50cff38ebf3728b32ed328e9c7239857d038c9cd456b04b0267"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1908.03523",
    "kind": "arxiv",
    "version": 3
  }
}