Pith Number

pith:ZZCSLL2V

pith:2018:ZZCSLL2V6CUXPNUD2VCSDHSHX3

not attested not anchored not stored refs pending

Two extremal problems on intersecting families

Hao Huang

arxiv:1804.11269 v1 · 2018-04-30 · 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{ZZCSLL2V6CUXPNUD2VCSDHSHX3}

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	2026-05-18T00:17:14.073594Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ce4525af55f0a977b683d545219e47becde985bd3e13884f625f63e9c74f7bb4

Aliases

arxiv: 1804.11269 · arxiv_version: 1804.11269v1 · doi: 10.48550/arxiv.1804.11269 · pith_short_12: ZZCSLL2V6CUX · pith_short_16: ZZCSLL2V6CUXPNUD · pith_short_8: ZZCSLL2V

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/ZZCSLL2V6CUXPNUD2VCSDHSHX3 \
  | 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: ce4525af55f0a977b683d545219e47becde985bd3e13884f625f63e9c74f7bb4

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ddf51788afeae67cb3bab08955f08cf20e3a0fa878bff3cba7fb8f56b6f151f2",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2018-04-30T15:12:33Z",
    "title_canon_sha256": "31da352b3c49bdf1da75df9ac6216cae81b0f39afa9972d7e55f3b41b55a7fb5"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1804.11269",
    "kind": "arxiv",
    "version": 1
  }
}