Pith Number

pith:DCWSNQJM

pith:2022:DCWSNQJMJBQNVAHDK4NSCP7ARW

not attested not anchored not stored refs pending

An attack on Zarankiewicz's problem through SAT solving

Jeremy Tan

arxiv:2203.02283 v2 · 2022-03-03 · math.CO · cs.DM · cs.LO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{DCWSNQJMJBQNVAHDK4NSCP7ARW}

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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.

Cited by

1 paper in Pith

An Improved Upper Bound on the Zarankiewicz Number z(43;2)

Receipt and verification

First computed	2026-07-05T04:16:17.803618Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

18ad26c12c4860da80e3571b213fe08dac21761da5a266556d613b66c827a4cb

Aliases

arxiv: 2203.02283 · arxiv_version: 2203.02283v2 · doi: 10.48550/arxiv.2203.02283 · pith_short_12: DCWSNQJMJBQN · pith_short_16: DCWSNQJMJBQNVAHD · pith_short_8: DCWSNQJM

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/DCWSNQJMJBQNVAHDK4NSCP7ARW \
  | 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: 18ad26c12c4860da80e3571b213fe08dac21761da5a266556d613b66c827a4cb

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "bb80ef85f8596aaebf651fc98214f13484d1496c5de8d2bedc51f74a9ba4695f",
    "cross_cats_sorted": [
      "cs.DM",
      "cs.LO"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2022-03-03T16:52:45Z",
    "title_canon_sha256": "96e825856944fdf3d0c0fcb823596031ac2608fca4161960020d3ba9342c4ad6"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2203.02283",
    "kind": "arxiv",
    "version": 2
  }
}