Pith Number

pith:A42JXOFW

pith:2018:A42JXOFWLCH7YBHZPNV2ZQRTJ3

not attested not anchored not stored refs pending

Partially perfect hash functions for intersecting families

Tapas Kumar Mishra

arxiv:1808.02273 v1 · 2018-08-07 · cs.DM

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{A42JXOFWLCH7YBHZPNV2ZQRTJ3}

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	2026-05-18T00:08:47.028677Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

07349bb8b6588ffc04f97b6bacc2334ede996432568c1e3fd0bb56cd81fce7f9

Aliases

arxiv: 1808.02273 · arxiv_version: 1808.02273v1 · doi: 10.48550/arxiv.1808.02273 · pith_short_12: A42JXOFWLCH7 · pith_short_16: A42JXOFWLCH7YBHZ · pith_short_8: A42JXOFW

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/A42JXOFWLCH7YBHZPNV2ZQRTJ3 \
  | 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: 07349bb8b6588ffc04f97b6bacc2334ede996432568c1e3fd0bb56cd81fce7f9

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "274bbf22e47e92644c5d648091f5de1f64918b920f0f1ddbd34b964829ee2fec",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DM",
    "submitted_at": "2018-08-07T09:20:20Z",
    "title_canon_sha256": "75a79f9226c6176c0424560ef7b78f2b3b839ae9ea79dbd1400e0b7646e12194"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1808.02273",
    "kind": "arxiv",
    "version": 1
  }
}