Pith Number

pith:KCRVFUCH

pith:2017:KCRVFUCHWYE6FVNPILCXTIZ4QK

not attested not anchored not stored refs pending

A new upper bound for the size of a sunflower-free family

G\'abor Heged\"us

arxiv:1702.02831 v2 · 2017-02-09 · 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{KCRVFUCHWYE6FVNPILCXTIZ4QK}

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	2026-05-18T00:48:36.721348Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

50a352d047b609e2d5af42c579a33c829b9cbb08752ddf23db45c77899a14122

Aliases

arxiv: 1702.02831 · arxiv_version: 1702.02831v2 · doi: 10.48550/arxiv.1702.02831 · pith_short_12: KCRVFUCHWYE6 · pith_short_16: KCRVFUCHWYE6FVNP · pith_short_8: KCRVFUCH

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/KCRVFUCHWYE6FVNPILCXTIZ4QK \
  | 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: 50a352d047b609e2d5af42c579a33c829b9cbb08752ddf23db45c77899a14122

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "bafa11d9df3699743a3235721273a02bd898fa2ca23af5c344b29ebbda12afdd",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2017-02-09T13:48:15Z",
    "title_canon_sha256": "0bd2a366c4216689a7ccb855f847558eeff199c862b72ddbe1bc1461ebfdb502"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1702.02831",
    "kind": "arxiv",
    "version": 2
  }
}